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Thank you Scotty for the rotary engine documentary.. Pound for pound the most FUN car I've had so far has been RX7. The most infuriating was the Triumph TR7.
Yeah the rotary engine is pretty cool, I had a FD rx-7 back in the day, my brother also had the FC savanna. We became some of the best racers around, we even made a race team called the redsuns, and dominated many mountain passes, it was going great until one day we got beat by a tofu delivery driver. I will never forget. oh wait.....
My father bought a 1971 rx3. Engine was apart in a box. How he figured it out still amazes me. I drove it for two years. Two carburetors and two distributors. Timing was critical.
Feeling robbed... came here for a new and improved rotary, especially after that glory montage with the past, only to hear about a small something to extend electrical engines...
Timestamp for the “Future of Rotary engines”: 10:18 Seriously, it’s the very last thing and it is extremely underwhelming. Interesting, but underwhelming.
If they could somehow combine the power of a rotary engine with the economy of a diesel, which is inherently more lubricated that would be a noteworthy
@@irfanqayyum2983 wonder if its possible to do a turbo-charged rotary lol, that would help with fuel (won't rev as high but it'd have plenty of torque)
Took apart and reassembled a rotary engine out of a wrecked RX7 back in ‘86/87 in high school auto class. Still can’t figure out why these weren’t more popular. Cool engines. 🇨🇦👍🏼
Lack of fuel efficiency is supposedly the reason why rotaries never became more popular. A friend of mine had an RX7 back in the day and it's performance was outstanding! I don't remember if he ever said anything about the gas mileage.
I owned a used RX-4 for a couple of years, my first car. It was manual 4 speed and was great fun to drive. Even though it had a rebuilt engine when I bought it, the seals started to fail after two years. It also never got more than 14mpg highway. Both of these problems were endemic to the rotary although the RX-7 and 8 had better seals.
Thank you for mentioning my beloved NSU. I had a non rotary 1959 nsu prinz, which was unique in itself. 2 cylinders that both go up and down together in separate cylinders but only one side fires per revolution via twin bosch ignition coils. Vibration is controlled by a central counterweight. No belts, the ohv cam hemi aluminum head is driven by eccentrics. Air cooled. 36.8 cu in, 20 hp @ 60 mpg. Fill up of the crankcase was 1 qt. Gas tank was 6 gallons. 1090 lbs, 123" overall, 78" w.b. seated 4
It's a shame they didn't do more development on this engine. A good friend of mine had an RX-7 in 1998. What an awesome ride it was. That thing would move!!!
@@CptDaves If you're going to start pointing out Italian car makers logos with "a picture of the rotor of a wankel", you need to start including Ferrari, Lamborghini and Ducati. Do you see any pattern forming?
It’s weight balanced the liquid piston engine. However I feel many company’s this days don’t want to change things again and the ppl behind it want to much money for company’s like Mazda to bother engineering on top of it.
Haven't heard much development on that in a while but if speculation were a currency Liquid Piston would be ridiculously wealthy. There are some very reliable race rotaries. As you might expect they don't come cheap. Some really good videos on them but can't recall the name. Bug eye Sprite is a great application for a rotary. All I can remember about mine was don't drive a rotary cold, kills the seals. Shame they didn't go with fuel injection. Mazda might of solved the heat issues and* less pollution.
My old auto mechanics teacher back in high school used to call the 4 cycles of the engine suck, squeeze, bang, blow. Because he knew it would crack up our teenage minds. And it did we laughed our asses off every time he said it. I miss that dude, good ole Mr. Akers.
I had a little 1985 RX-7 I bought for $900 in high school. Was a blast to drive. Handled awesome. Was fast enough for me to have fun with but slow enough that I didn't die.
No the Achilles heel is fuel efficiency... which will never be solved on a mostly wankel rotary like mazda wants to make. Nobdy wants 20mpg or less in a coupe or sedan... they want 35+
@@Wingnut353 you don't buy a rotary powered vehicle for fuel efficiency. So it's not a weakness. You expect it. You buy a rotary powered vehicle because its unique. Special.
@@emergencylowmaneuvering7350 We did not. but we built the Bede BD-4 . If I find something Ill come back here 👍 Its been a few years but there was couple at Fullerton Airport in CA. Take Care ! 👍😎
Inventor was a creative genius who was thinking way outside the box, but how this design doesn't vibrate like a random orbital sander, I can't understand. Incredible.
No crankshaft it's such an efficient compact brilliant engineering design, that pattern is incredible. Tuetonic and Japanese ideas, they are so innovative. I remember the Rotary Mazda's they were a great little Rally car and dirt track speedway.
I like Mazda's idea for making the rotary engine a range extender for electric vehicles. If they fit it with direct injection, it can have higher fuel efficiency and power. Since the combustion chamber is separate from the intake chamber, the injectors would stay clean for a longer period of time. Direct injection makes more sense on a rotary engine vs a standard combustion engine.
You can buy an 'off the shelf' 750hp 13B Turbo rotary from a few of the performance places here in Australia, the power to weight ratio of a boosted rotary is truly incredible...
The rotary engine makes sense as a generator, as it does not need the power bands that a directly connected engine would have to have. All it needs to do is run at a certain RPM.
There's no oil sump in a rotary engine; instead, there's an oil injection system that shoots oil into the chamber on the intake stroke. That's shat leads to abysmal emissions numbers. Another bad aspect of the rotary is differential heating: the intake half of the engine is always quite a bit cooler than the exhaust half. This leads to problems keeping gasketed surfaces from leaking. Despite all this, it is a fascinating engine with only three major moving parts (two rotors and the eccentric main shaft). I've always wanted to install one in a drag boat.
I had an RX7 many years ago and it had a sump, it had a dipstick too to check oil level. There was an oil metering pump that pushed oil into injectors in the rotor housings to lubricate the apex seals
I remember being in auto shop class in high school and some teacher had a Mazda RX-7 with a rotary engine. He brought it in so we could check it out. Didn't understand why it didn't get mass produced until now. Scotty did a great job explaining the important things one needs to know about these engines!
The seals wear out too quickly, sparkplugs were very expensive, as were the 2 sets of points, which all needed to be changed monthly, plus they were just as " economical " as a large automatic V8 car . ( without the room inside )
@Arturo Eugster, it was more about emissions. Lots of NOX emissions something to due with distinct hot and cold sides of the engine. Mazda is putting a new rotary in a hybrid as a range extender with direct injection and some weird variable timing techniques. Ends up being smoother, quieter, and more efficient than piston engines. I think they plan to run it with limited RPM range.
Great video on how a rotary engine works, had 1980 Rx7 12a factory 4spd All original 224,828 miles before sides seals went out, after setting 4bbl carb I squeezed 24mpg out of it
@Joppa Kolla damn bro. Yeah we all know those things. Rotaries are fun and unique, and the power output is insane. With proper engineering, they have potential to be better than piston engines. As it stands right now, you're not wrong, but don't hate on our passion. I personally love the RX-8, but the rotary from the earlier RX-7 was better built.
@Joppa Kolla I had one back in the 80s. Everyone here is right about the problems but they were great fun. They were pretty low on torque. I don't know if that's due to the rotary design or the small displacement but once you learned to keep the revs up, the original RX7 was a light, predictable little car that handled pretty well. They were great fun on a twisty mountain road. I even considered running a rotary in my desert race car. I didn't ever do it because someone beat me to it and they had lots of problems. The weight savings was offset by having to carry extra fuel and the seals were lucky to last 500 miles in dusty race conditions. I wouldn't want one again unless they can figure out the issues but I totally understand why some people are fans. I did want some more power in my RX7 but it's hard to think of a car in the 80s that was more fun than an RX7 on a mountain road.
Liquid Piston is manufacturing a rotary engine that uses a triangular shaped cylinder and a peanut shaped piston. Supposed to solve many of the issues and still deliver the power to weight characteristics. They aren't aiming towards the automotive market at this stage however that wouldn't stop someone from purchasing an engine in putting it in their RX-7.
Go Scotty - Go Scotty - Go Scotty - Go ! I had 2 Mazdas in my life and the old lady had a 626 when she was working, none of them were rotaries but were all damn good cars, Merry Christmas Mr.Kilmer! Now ring that bell !!!
My 2nd car was a '72 RX-2. Incredibly smooth and fast top end. Didn't keep it long though. The engine seal failure became a common problem and very expensive to fix.
Me too. I liked leaving those caddies that would speed up when being passed on the freeway in my dust. Little car that looks like it came out of a preschool reader leaving caddies. I loved it.
@@cmichael40 😂🤣 MY FIRST CAR WAS A SAAB BUT I WOULD DO THE SAME, HERE IN San Antonio,Tx WE USED TO HAVE THE WEEKEND BOULEVARD CRUISE\ RACE LANE, AND THAT WAS MY FIRST TIME I SEEN A RX-7 SMASH A PONY MUSTANG.😱🤯🤯🤦🤦💰
My first car was a 1972 Mazda RX2 4-door. That thing could keep up with a Dodge 440 Magnum! It was fun to drive and sealed my appreciation for compact sedans.
@Andy Candy I really dig the designs of those rx cars but just not the engine. If they could make it an option for a piston engine or get rid of the rotary entirely, Ill totally buy the rx9 but for now my sights are set for a Miata ND2
Scotty: In the 70’s I drove a Mazda Cosmo for sales work all around the eastern USA. It did a great job and was fun to drive. When Corvettes laughed I had fun smoking the (up to ~ 90-100 when they finally overtook me. Of course I was loaded with suitcases and engineering samples, so it was hardly a fair contest. Mazda gave me an engine transplant at 80,000 miles. After another 20,000 miles I sold it for what I paid for it. My family drove an RX-3 and RX-4 during those years, too. Yeah, I had to maintain all of them myself because the Mazda folks just couldn’t set up the triple ignition system (leading, training and high speed). Tuning the carburetor and afterburner was done by smelling the exhaust. When the gas smell went away it was tuned right. Good car! Didn’t owe me. Nickel!!!
I owned a 73 RX-3 that I bought for $50 with aluminum mags on it. The engine, trans, and tires were trash. I rebuilt the whole car from the ground up. I pulled a 13B and a 5 speed manual out of a wrecked Cosmo with 10K miles on it. I took the engine and trans apart and did my voodoo on them that I do so well. It was a full bridge port engine with bolted rotor gears and harden stationary gears. I massaged the syncros in the trans so that I could quick shift it. I then put a Airresearch TO-3 with custom turbine and compressor wheels on it and used a Holley 650 double pumper to supply the fuel. I installed a 4 row radiator, Holley high output fuel pump, limited slip 4.93 rear end gears, koni shocks, lowered 1 inch, traction bars, 225/60 TAs, custom interior and royal metalic blue paint. It was making 15 lbs of boost at 3K rpm and 250 lb/ft torgue. At 11.5K rpm I was making 500 hp. 13.1 at 110 mph in the quarter with the TAs. I had to use two waste gates. I also put quartz halogen lights, fog lamps and aircraft landing lights on the front end. I installed a Chrysler 100 amp alternator to supply the electrical needs. I installed a custom center dash with nine Steward Warner gauges in it. There were WT, OP, FL in the top row. The middle row had Volts, Amps, Boost/Vacuum. The third row had FP, OT, and ET. I put a 10K Tach and 160 mph Speedo in the instrument cluster. I owned this car for 15 years and drove it 500K miles. I had to overhaul the engine every 100K miles. I never had any problems with the apex seals. I would lose the side seals or seize a bearing if I missed a shift and over revved the engine. I considered 100K miles a good lifetime considering the amount of power that I was making.
I had a R1 with an R2 engine that had been modified for stock car racing. I rebuilt it just out of curiosity. It was amazingly easy to work on, and the apex seals didn't cost much. It was a tremendously fun car to drive. It was the muscle car era, and I got a kick out of blowing the doors off of guys who thought they had a hot car. The brakes did not match the engine, and I got tired of replacing shoes. It definitely went much better than it stopped.
I was really hoping for a resurgence of the rotary engine... with improved life span, stronger seals and with the environmental issues fixed.. Eventually, fewer moving parts should translate to improved cost and fuel efficiency. (One would hope)
As a young man in the 70's a good friend and I attended a couple of 24 hours of Daytona races. Back then we were able to take our sleeping bags into the grandstand area and spend the night. What I remember about the Mazda's is they seemed to be the loudest cars on the track.
Always liked Mazda's designs, for a crossover the CX-5 looks great, the Mazda 3 and 6 are great cars that look sharp. Hopefully some great stuff comes out of this
Is “looks good” A valid opinion on the quality of an automobile? When someone has to fall back on how a vehicle looks to say something nice.... Don’t judge a book by it’s cover. Don’t spread your judgement
@@fastinradfordable the guy just said he thinks they look good. He made no judgements about quality. Funny how you tell him not to judge while you're judging him based on things he didn't say
I bought an RX-3 in the late 70s for $300 because the Mazda dealership told the owner, over the phone, the cost of replacing the clutch and pressure plate, but I fixed it for $7 because it only needed a clutch slave cylinder repair kit and a little hydraulic fluid. I drove it for a while and gave it to my little brother who loved that pocket rocket until a woman ran a stop sign and parked her Volare station wagon in the passenger compartment. One of the most fun cars of my lifetime!
Love the new vids. I been watching for a couple of years, great knowledge and good, informed opinions. Nicely done, you have a gift Scotty. Priceless experience, I've learned so much on this channel. Without getting grease on my hands!
@@amelyntan1990 When more rotary owners learn about how to maintain and drive them correctly, REs will see better lifespans... The seal's premature deterioration is typically caused by abusive/inconsistent driving conditions and lack of proper maintenance. In the performance realm of things I see people try to drive them like they are V8s instead of a 2 stroke motorcycle with four wheels.. which is the best way to approach it, but how many non-performance minded RE owners even know what a 2 stroke is?? It's night and day difference in lifespan between rotorheads and common drivers, unfortunately.
My mazda after 145k miles needed a new seal rebuild pulled it apart and the rotors were crisp smooth, it's mainly because these engines require constant oiling. Soo once my rx8 (2004) gets a new seal pack I'll get running for another 100k qnd it's been damn reliable.
I have 2014 Mazda CX5 and it's a great little suv, I love and it runs flawlessly. Never had problem one with it . I highly recommend them. Thanks Scotty for the dropping knowledge on us as well as you do .Keep up the good work.
@@Techie1224 85.000 factory tires lasted 70.000 And just did brakes at 80.000 it's been a great car on ya battery at 70.000 as well no other problems but I lived up north for the the first 4 years I had so I think that's why I had to replace the battery. IAM down South now much warmer. Thanks for asking 🙂
I added mineral SAE 30 2 Stroke oil to the fuel in my old RX8. This preserves, cleans and lubes the rotor tips especially when it ran on liquid petroleum gas (lpg).
My grandfather Was a master machinist and a engineer that knew and worked with Felix Wankel He actually helped design and develop the Rotary engine with him...My grandfather then moved to America right before World War II and became a master machine for the New York Times working with printing presses,Sometimes going to multiple cities in the usa building them.. I owned a gen 2 Mazda rx7 ,Was my second car, I sold it in the mid 90s ,,, i Still Miss the car.
@@INORBET long dead ,,, he died in the 80s , but both my uncles His sons became master machinist for the New York Times printing presses,,,They both retired one is 80 the other is 76 ...ive been to both there job sights one in Manhattan the other one was in New Jersey ,,,very ccol place...
@@dandrechesterfield5411 my uncle also has photos of the 2 guys together ...grandpa and felix ..working and hanging out ..My my uncle passes maybe I'll get the photos ...I haven't talk to either in a while.. i live 2500 miles away now..
With many years of owning rotaries, working at Mazda dealerships, the main down fall is babying the engine. 3 rotations of the essentric shift means internals are spinning at a third the rate of the rpm... internals are spinning at 1000rpm when the tachometer is reading 3k.... the 8s had 9k redline rpm for a reason... it's an enthusiast car... high maintaince and less knowledge abound... but imo easier to work on than a traditional engine. So a dyi person who lives and breathes cars it's a perfect match. ... subbed and liked
Mazda also sold a small pickup truck with a Wankel engine. It was pretty fast. The IMSA races of the early 1990’s had two cars with four-rotor Wankel engines. They were fast and very loud.
Scotty forgot to mention that the NSU company also had a single rotor car called the Spider and a twin rotor car that was way ahead in design called the RO80.
These little rotary engines are nuts if you get a good one, went for a ride in one back in the early eighties and it was way to fast for the size of the car.
beautifully explained. im an automobile engineer and always wished that vankel engines deserved more research and development. hope they develop the technology for better emissions and lesser wear.
A few interesting added tidbits: (1) It wasn't quite brought out, but the rotor tip seals are lubricated by oil injection into the chamber. This contributes to pollution problems because now you are burning that oil as well as the gas. (2) The exhaust temperature is much hotter such that the exhaust tubing is roll bar gauge, not the usual thin gauge found in piston engines. (3) You might argue that the high exhaust temperatures are a sign that combustion is more complete, but high temperatures also contribute to formation of oxides of nitrogen, which is another pollution problem. (4) Interestingly, in the 1970s Mazda dealt with pollution control not with a catalytic converter, but rather a "reactor". That is, the exhaust was routed to another cylindrical chamber that might look like a catalytic converter but was a hollow chamber. Air from an air pump was also fed into the chamber to complete the burning cycle, hence the name "reactor chamber". That all said, I miss these engines. I once wanted to mate one of these to a Porsche 914 transaxle and install it in Fiat X1/9. (A friend suggested we also needed something British such as a Lucas electrical system to complete this international symphony. We whapped him.) Sadly, the Fiat was too badly rusted, so this project never came to fruition. Cheers!
Best description of the Dorito-chip engine on TH-cam! Rx-8's get a consistent 16MPG's city driving and 23MPG's highway. That's still the biggest drawback for rotaries.
It's crazy that the awkwardly named but super-promising free piston linear motor generator isn't being put in hybrids instead of a rotary, with it's wonderful simplicity and so many advantages if the internal combustion engine has a future then that's probably it, but it's going almost ignored.
Everyone must try driving a car with a rotary engine sometime! Years ago I drove a customised RX7, which had been fitted with an extra rotor and a turbo charger! The last time I went in something that fast, it was made by Boeing.....
Owned an RX3 in the '70s man that engine was smooth and would rev really quickly. A buzzer would sound when it hit redline... the engine was incredibly quiet. Gas mileage was pitiful... but it was fun to drive
When I learned about the rotary engine 35 years ago. We were taught that the motor didn’t last for all same reasons you pointed out. I didn’t see these things being worked out, and doesn’t seam they have today.
Scotty I love these new docushorts you're doing. I would love to see a video on Hudson motors. Maybe even Hudson and Nash merger creating AMC. I bet it would be pretty interesting.
Odd, 1.3 x 3 is 4.2 & as that is only one rotation of the rotor ( ie one detonation per 120 degs ) for a comparison with a four stroke ( one detonation per 720 degs) , would that not suggest 1.3 x 6 ie 7.8?
Well, the volume of the air that is squashed for the bang is 1.3 for Rotary so perhaps it's a 1.3. But then on a 4-stroke it uses that volume twice per explosion but it's still called 1.3... but since Rotary uses two different sections for bang and exhaust then perhaps it should be 2.6. However.. is it really 3 cylinder faces (as opposed to 1 bang chamber) in which case it's 3.9. or... perhaps we need all three cylinder faces using two different bang/blow volumes which means it's 7.8. Ho Hum..
@@robertwoodliff2536I had to go do some reading on this lol. So you are using the actual rotor rotation, but they use crankshaft rotation to come up with engine size. The rotary engine crankshaft (eccentric shaft) spins 3x faster than the rotor. If you're looking for the rotary engine size given the same rotations as a 4 stroke than yes you are right (which might explain their bad gas mileage) in that it packs the equivalent of 7.8 liter of working volume 4 stroke engine, there are some people though that consider the rotary similar to a 2 stroke. I think each chamber should be considered like a cylinder since each one takes part in the combustion process and in that case 1.3x3 is a 3.9 liter. And 1.3 is already taking into account that the 13B motor has 2 rotors. For tax and emissions purposes everyone is going to use a different standard
I think if you look at LeMans and the rules and regulations when the 787B raced and the rotary engine they used,it was calculated differently...And that was used to determine the size of the motor for the races.I think thats the best calculated call for a rotary engine size.
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Thank you Scotty for the rotary engine documentary.. Pound for pound the most FUN car I've had so far has been RX7. The most infuriating was the
Triumph TR7.
Hey Scotty, got any dope on the Suzuki Jimny being sold state side by Toyota?
They can and probably will continue to perfect it along side new technology. I can't wait.
Thanks, Scotty!
THE "DORITO" Rotary Engine will be mass produced in MEXICO 🇲🇽
It's the Japanese, bees knees!
Almost 11 minutes of video and NO mention whatsoever of Mazda’s most powerful new engine.
Agree.
Damn
Thanks for the heads up
@@allonyllc1879 damn
wast of time. not to mention some of his info is incerrect.
Had a 91 RX7 I loved that car, learned how to work on it because not many mechanics new how. That's when I found out how great Haynes books are
Kids these days don't know anything about going to the parts house to buy a Shelton's
@@davidpayne4084 Kids these days don't know a dipstick from a lug nut.
@@davidpayne4084 😂😂 Shelton
Helms or chiiltons
@@JohnDoe-ny1wp that’s definitely used to check on the oil
Yeah the rotary engine is pretty cool, I had a FD rx-7 back in the day, my brother also had the FC savanna. We became some of the best racers around, we even made a race team called the redsuns, and dominated many mountain passes, it was going great until one day we got beat by a tofu delivery driver. I will never forget.
oh wait.....
LOL
Your talking about the guy who was dating my niece?
Lol
i thought you were serious in the first sentence, then i remembered i watched initial d two times
bruhhh 💀😂
Never underestimate the power of the spinning doritos.
never estimate the tears of mazda owners because of apex seal failure
What's a Muzda...
Spinning is a good trick.
Idk why this is so funny lolz
Kansei dorifto!!!
Nothing here about a new Mazda engine or the most powerful engine ever made...
yup
I dont know about new but I think he means that a 1.3L engine achievieng 230+ hp can be called one of the most powerful engines
@@gatoso0099 it’s far from new
He mentions the new engine after ~10:30 with it being a range extender in the MX30. Though no real information about it.
@@daves2433 and definitely nothing about it being powerful
My father bought a 1971 rx3. Engine was apart in a box. How he figured it out still amazes me. I drove it for two years. Two carburetors and two distributors. Timing was critical.
I had an RX 3 wagon. 100 mph without a hiccup..
The engine is pretty simple.
There are only a few moving parts.
Feeling robbed... came here for a new and improved rotary, especially after that glory montage with the past, only to hear about a small something to extend electrical engines...
Yup
Thanks for the heads up
Damn
What's the timestamp for that electric thing anyways
Timestamp for the “Future of Rotary engines”:
10:18
Seriously, it’s the very last thing and it is extremely underwhelming. Interesting, but underwhelming.
I've read 6 years ago that the CEO of Mazda made it clear that as long as he is the CEO, the rotary will not go away
Yeah, but he (Masamichi Kogai) was demoted in 2019 ...
If they could somehow combine the power of a rotary engine with the economy of a diesel, which is inherently more lubricated that would be a noteworthy
@@SF-dy6hn but i won’t rev as high
@@irfanqayyum2983 get a better torque converter
@@irfanqayyum2983 wonder if its possible to do a turbo-charged rotary lol, that would help with fuel (won't rev as high but it'd have plenty of torque)
Took apart and reassembled a rotary engine out of a wrecked RX7 back in ‘86/87 in high school auto class. Still can’t figure out why these weren’t more popular. Cool engines. 🇨🇦👍🏼
Lack of fuel efficiency is supposedly the reason why rotaries never became more popular. A friend of mine had an RX7 back in the day and it's performance was outstanding! I don't remember if he ever said anything about the gas mileage.
Because they are JUNK
I owned a used RX-4 for a couple of years, my first car. It was manual 4 speed and was great fun to drive. Even though it had a rebuilt engine when I bought it, the seals started to fail after two years. It also never got more than 14mpg highway. Both of these problems were endemic to the rotary although the RX-7 and 8 had better seals.
They couldn't go 80k miles without an engine overhaul.
These voiceover videos are amazingly high quality and you’re voice is perfect for it, thank you Scotty!
Animations are COOL!
I prefer when he is screaming like a mad man!
Scotty's techno babble is so easy to digest
Probably the best one he's ever done lol.
Now he just needs to pronounce european words the right way lel
Had an Arctic cat with a 2 rotor...Man that Sled MOVED
I recall those Wankel powered cats. Never rode one however as they were not too common.
The weight savings would be awesome in today's snow machines.
AMC also wanted a rotary for the Pacer.
What happened?
@@ronhood7773 it was to be supplied by General Motors . GM couldn't do it . AMC had to modify the car for its 6 cylinder engines . Cost a bundle .
Does it still run?
Thank you for mentioning my beloved NSU. I had a non rotary 1959 nsu prinz, which was unique in itself. 2 cylinders that both go up and down together in separate cylinders but only one side fires per revolution via twin bosch ignition coils. Vibration is controlled by a central counterweight. No belts, the ohv cam hemi aluminum head is driven by eccentrics. Air cooled. 36.8 cu in, 20 hp @ 60 mpg. Fill up of the crankcase was 1 qt. Gas tank was 6 gallons. 1090 lbs, 123" overall, 78" w.b. seated 4
That was the best presentation and explanation of the rotary engine I have ever seen. Nicely done sir.
You are absolutely right. I've been driving RX7's since 1983.
@@FLYBOY-eh5th How many miles do you get before having to replace the apex seals?
@@2Truth4Liberty I got an 88 GXL with 153,000 original miles. It runs great, no problems with apex seals at all. By the way, I'm the original owner.
@@FLYBOY-eh5th So, 5000 miles per year must be the sweet spot - you got twice the life out them so far. Good to know.
It depends a lot on how you use it. And if it's turbo or not, I guess
It's a shame they didn't do more development on this engine. A good friend of mine had an RX-7 in 1998. What an awesome ride it was. That thing would move!!!
A 2021 4 cylinder with a turbo has all the power you need
@@CptDaves Having a performance car isn't about "NEEDS." It's about wants and desires.
@@CptDaves a used V6 still gonna make more power boy grow up lol
@@Rmac335 They only make engines with 4 cylinders, but the trademark of the Italian car maker Lancia is a picture of the rotor of a wankel. WTF
@@CptDaves If you're going to start pointing out Italian car makers logos with "a picture of the rotor of a wankel", you need to start including Ferrari, Lamborghini and Ducati.
Do you see any pattern forming?
The Liquid Piston engine (inside out Wankle) looks promising.
*Wankel.
@@cordongrouch9323 stfu
@@sieveign why exactly
It’s weight balanced the liquid piston engine. However I feel many company’s this days don’t want to change things again and the ppl behind it want to much money for company’s like Mazda to bother engineering on top of it.
Haven't heard much development on that in a while but if speculation were a currency Liquid Piston would be ridiculously wealthy. There are some very reliable race rotaries. As you might expect they don't come cheap. Some really good videos on them but can't recall the name. Bug eye Sprite is a great application for a rotary. All I can remember about mine was don't drive a rotary cold, kills the seals. Shame they didn't go with fuel injection. Mazda might of solved the heat issues and* less pollution.
My old auto mechanics teacher back in high school used to call the 4 cycles of the engine suck, squeeze, bang, blow. Because he knew it would crack up our teenage minds. And it did we laughed our asses off every time he said it. I miss that dude, good ole Mr. Akers.
I had a little 1985 RX-7 I bought for $900 in high school.
Was a blast to drive. Handled awesome. Was fast enough for me to have fun with but slow enough that I didn't die.
The Achilles heal of the rotary is the seal. When you find a material strong enough for that problem is solved.
By the time you solve the sealing problem, people now want Electric cars.
No the Achilles heel is fuel efficiency... which will never be solved on a mostly wankel rotary like mazda wants to make. Nobdy wants 20mpg or less in a coupe or sedan... they want 35+
@@Wingnut353 you don't buy a rotary powered vehicle for fuel efficiency. So it's not a weakness. You expect it. You buy a rotary powered vehicle because its unique. Special.
Special needs
Brilliant work. I've been trying to explain rotaries all my life.
I remember building an airplane with my Dad long time ago out all the engines he went with mazda rotary the output is insane... 👍😎
Makes sense since its rotary. That's cool
Im a CFI. Any videos of those airplanes with a Rotary engine??
@@emergencylowmaneuvering7350 ye must be cool right
@@emergencylowmaneuvering7350 We did not. but we built the Bede BD-4 . If I find something Ill come back here 👍 Its been a few years but there was couple at Fullerton Airport in CA. Take Care ! 👍😎
@@Manimal805 ok, thanks..
Inventor was a creative genius who was thinking way outside the box, but how this design doesn't vibrate like a random orbital sander, I can't understand. Incredible.
No crankshaft it's such an efficient compact brilliant engineering design, that pattern is incredible. Tuetonic and Japanese ideas, they are so innovative. I remember the Rotary Mazda's they were a great little Rally car and dirt track speedway.
They are actually smoother.
I like Mazda's idea for making the rotary engine a range extender for electric vehicles. If they fit it with direct injection, it can have higher fuel efficiency and power. Since the combustion chamber is separate from the intake chamber, the injectors would stay clean for a longer period of time. Direct injection makes more sense on a rotary engine vs a standard combustion engine.
Why don't they run off fumes???
A kerosene rotary as a range extender.
@@buddyrojek9417 kerosene is crazy expensive per gallon!
They are JUNK the apex seals wear out.and they have high emissions!
An early commercial shows a kid on a pogo stick: "Piston engine goes boing boing boing, but the Mazda goes Hummmmm."
I remember.
tanks fir the mamories.
Vtec go brrr
Wrong. They go Brap brap
It seem like and has been said that this engine type uses more torque. Why hasn't anyone tried redesign this to a diesel application?
You can buy an 'off the shelf' 750hp 13B Turbo rotary from a few of the performance places here in Australia, the power to weight ratio of a boosted rotary is truly incredible...
I know it was a big competition between ya'll and Puerto Rico, that's power right there 750hp out of a rotary eng!
How much fuel they use... also incredible.
I’ll always want an RX7, such a beautiful car 🥰
Have had two, a first Gen and a Second Gen. Both were favorites!
Go get it
@@skillzz6889 Dude I cant even afford a regular car! 😩
@@Cheezwizzz ik I cant either but I gotta say go get it if u want it wats stopping u😂
junk, i owned one,, Anything Mazda is trash..They look great but that's about it
The rotary engine makes sense as a generator, as it does not need the power bands that a directly connected engine would have to have. All it needs to do is run at a certain RPM.
the draw on the engine is constant but variable, what you say makes a lot of sense. rotary engines wear out is strange ways.
I have read that direct injected 2 strokes are being developed that will power generators, & run in an rpm range that will minimise emissions
"Apex Seal". Get to know this term. You will see it A LOT on car repair receipts if you own a rotary engine.
My Grandfather gave me his 1987 rx7 with less than 40k miles in 1998.
Thanks Gramps RIP 🙏❤
Does it still run? What's the mileage on it now?
@@thebeatnumber I sold it a few years later
There's no oil sump in a rotary engine; instead, there's an oil injection system that shoots oil into the chamber on the intake stroke. That's shat leads to abysmal emissions numbers. Another bad aspect of the rotary is differential heating: the intake half of the engine is always quite a bit cooler than the exhaust half. This leads to problems keeping gasketed surfaces from leaking. Despite all this, it is a fascinating engine with only three major moving parts (two rotors and the eccentric main shaft). I've always wanted to install one in a drag boat.
I had an RX7 many years ago and it had a sump, it had a dipstick too to check oil level. There was an oil metering pump that pushed oil into injectors in the rotor housings to lubricate the apex seals
Bill Carroll an old drag racer built one and wrote about it in the 60s he got 300 hp out of it!
The only thing I learned is that I absolutely NEVER want to watch another scotty kilmer video again.
I remember being in auto shop class in high school and some teacher had a Mazda RX-7 with a rotary engine. He brought it in so we could check it out. Didn't understand why it didn't get mass produced until now. Scotty did a great job explaining the important things one needs to know about these engines!
Dude ya nee to see a van veen
First bike to have dortio lump
The seals wear out too quickly, sparkplugs were very expensive, as were the 2 sets of points, which all needed to be changed monthly, plus they were just as " economical " as a large automatic V8 car . ( without the room inside )
Otto, they were mass produced until the regulations in terms of fuel consumption killed them.
They talked about the RX-7 constantly which is a Monza
@Arturo Eugster, it was more about emissions. Lots of NOX emissions something to due with distinct hot and cold sides of the engine.
Mazda is putting a new rotary in a hybrid as a range extender with direct injection and some weird variable timing techniques.
Ends up being smoother, quieter, and more efficient than piston engines.
I think they plan to run it with limited RPM range.
When i hear Rotary one thing comes to my mind
: 787B
Funny, to me apex seals comes to mind lol
how can you hear anything with a 787b? Shits too loud lmao!
@@griffins750 damn loud and crazy one of the best
@@Lucifer_334 By far!
When I hear 787B Rotary comes to mind
The rotary engine failed to pass emission test and disappeared from the market. What changed that allow its comeback?
Great video on how a rotary engine works, had 1980 Rx7 12a factory 4spd
All original 224,828 miles before sides seals went out, after setting 4bbl carb I squeezed 24mpg out of it
I hope that rotary engine will never die.
F'ing love RX-7s
@Joppa Kolla damn bro.
Yeah we all know those things. Rotaries are fun and unique, and the power output is insane. With proper engineering, they have potential to be better than piston engines. As it stands right now, you're not wrong, but don't hate on our passion.
I personally love the RX-8, but the rotary from the earlier RX-7 was better built.
@Joppa Kolla I had one back in the 80s. Everyone here is right about the problems but they were great fun. They were pretty low on torque. I don't know if that's due to the rotary design or the small displacement but once you learned to keep the revs up, the original RX7 was a light, predictable little car that handled pretty well. They were great fun on a twisty mountain road.
I even considered running a rotary in my desert race car. I didn't ever do it because someone beat me to it and they had lots of problems. The weight savings was offset by having to carry extra fuel and the seals were lucky to last 500 miles in dusty race conditions.
I wouldn't want one again unless they can figure out the issues but I totally understand why some people are fans. I did want some more power in my RX7 but it's hard to think of a car in the 80s that was more fun than an RX7 on a mountain road.
Liquid Piston is manufacturing a rotary engine that uses a triangular shaped cylinder and a peanut shaped piston. Supposed to solve many of the issues and still deliver the power to weight characteristics. They aren't aiming towards the automotive market at this stage however that wouldn't stop someone from purchasing an engine in putting it in their RX-7.
It will arrive dead as the World is going electric.......Paul
@@paulholterhaus7084 probably for mainstream. But there will almost always be a demand, for a few generations at least.
Go Scotty - Go Scotty - Go Scotty - Go ! I had 2 Mazdas in my life and the old lady had a 626 when she was working, none of them were rotaries but were all damn good cars, Merry Christmas Mr.Kilmer! Now ring that bell !!!
Rx-9 incoming 😁
RX-i9 14+++++++++++++++++++++++++
Think Apple: RX-X !
A new six rotor rx-9
@Andy Candy in Rob's garage 🤣
@B_Smooth49 ya they are
My 2nd car was a '72 RX-2. Incredibly smooth and fast top end. Didn't keep it long though. The engine seal failure became a common problem and very expensive to fix.
Me too. I liked leaving those caddies that would speed up when being passed on the freeway in my dust. Little car that looks like it came out of a preschool reader leaving caddies. I loved it.
@@cmichael40 😂🤣 MY FIRST CAR WAS A SAAB BUT I WOULD DO THE SAME, HERE IN San Antonio,Tx WE USED TO HAVE THE WEEKEND BOULEVARD CRUISE\ RACE LANE, AND THAT WAS MY FIRST TIME I SEEN A RX-7 SMASH A PONY MUSTANG.😱🤯🤯🤦🤦💰
My first car was a 1972 Mazda RX2 4-door. That thing could keep up with a Dodge 440 Magnum! It was fun to drive and sealed my appreciation for compact sedans.
Loving these "high production videos", keep em coming scotty
thanks will do!
Agreed!!
Nice work Scotty!👍
Well done
If Mazda makes a new rotary sports car, I’ll definitely buy one
RX 9🤷
Me also, owned 2 FC'S, NOW 95 FD
Same here
@Andy Candy I really dig the designs of those rx cars but just not the engine. If they could make it an option for a piston engine or get rid of the rotary entirely, Ill totally buy the rx9 but for now my sights are set for a Miata ND2
@@Weebwhacker rx literally stands for rotory experiment. Why not just buy a Miata. Lol
Thanks Scotty, that was very informative. I helped a friend sell his RX7 he was never so glad to get rid of it.
Scotty: In the 70’s I drove a Mazda Cosmo for sales work all around the eastern USA. It did a great job and was fun to drive. When Corvettes laughed I had fun smoking the (up to ~ 90-100 when they finally overtook me. Of course I was loaded with suitcases and engineering samples, so it was hardly a fair contest. Mazda gave me an engine transplant at 80,000 miles. After another 20,000 miles I sold it for what I paid for it. My family drove an RX-3 and RX-4 during those years, too. Yeah, I had to maintain all of them myself because the Mazda folks just couldn’t set up the triple ignition system (leading, training and high speed). Tuning the carburetor and afterburner was done by smelling the exhaust. When the gas smell went away it was tuned right. Good car! Didn’t owe me. Nickel!!!
I owned a 73 RX-3 that I bought for $50 with aluminum mags on it. The engine, trans, and tires were trash. I rebuilt the whole car from the ground up. I pulled a 13B and a 5 speed manual out of a wrecked Cosmo with 10K miles on it. I took the engine and trans apart and did my voodoo on them that I do so well. It was a full bridge port engine with bolted rotor gears and harden stationary gears. I massaged the syncros in the trans so that I could quick shift it. I then put a Airresearch TO-3 with custom turbine and compressor wheels on it and used a Holley 650 double pumper to supply the fuel. I installed a 4 row radiator, Holley high output fuel pump, limited slip 4.93 rear end gears, koni shocks, lowered 1 inch, traction bars, 225/60 TAs, custom interior and royal metalic blue paint. It was making 15 lbs of boost at 3K rpm and 250 lb/ft torgue. At 11.5K rpm I was making 500 hp. 13.1 at 110 mph in the quarter with the TAs. I had to use two waste gates. I also put quartz halogen lights, fog lamps and aircraft landing lights on the front end. I installed a Chrysler 100 amp alternator to supply the electrical needs. I installed a custom center dash with nine Steward Warner gauges in it. There were WT, OP, FL in the top row. The middle row had Volts, Amps, Boost/Vacuum. The third row had FP, OT, and ET. I put a 10K Tach and 160 mph Speedo in the instrument cluster. I owned this car for 15 years and drove it 500K miles. I had to overhaul the engine every 100K miles. I never had any problems with the apex seals. I would lose the side seals or seize a bearing if I missed a shift and over revved the engine. I considered 100K miles a good lifetime considering the amount of power that I was making.
I love the Rotary motors. Thanks for giving me history I didn’t know!
I had a R1 with an R2 engine that had been modified for stock car racing. I rebuilt it just out of curiosity. It was amazingly easy to work on, and the apex seals didn't cost much. It was a tremendously fun car to drive. It was the muscle car era, and I got a kick out of blowing the doors off of guys who thought they had a hot car. The brakes did not match the engine, and I got tired of replacing shoes. It definitely went much better than it stopped.
Had a '89 RX-7. One of the most fun cars I've ever owned. The unique sound it made was cool.
I was really hoping for a resurgence of the rotary engine... with improved life span, stronger seals and with the environmental issues fixed.. Eventually, fewer moving parts should translate to improved cost and fuel efficiency. (One would hope)
I had no idea that Chevy tried to do this to the Vega. LOL. I assume they planned to leave out the apex seals to save money.
Love my Fd and Fc rx7, and yes I recently added some aftermarket apex seals
As a young man in the 70's a good friend and I attended a couple of 24 hours of Daytona races. Back then we were able to take our sleeping bags into the grandstand area and spend the night. What I remember about the Mazda's is they seemed to be the loudest cars on the track.
Citroën has used a bi-rotors engine for its GS in the 70´s
I had a RX3 in the 70’s. It was powerful and fast. My brother bought a RX7. He could outrun Chev Nova 396 all day!
What was the nova pulling 30ft. Trailer?
@@timothythomas1737 it would easy beat a nova 396. the car was light and the high rpms were alot better
They have 0 torque
When they turbo charged them that was a game changer.
If that RX-3 were in good condition it'd easily fetch 40 or 50k right now... The RX-7 likely similar or more if it were an FD... hard to find LHD.
Always liked Mazda's designs, for a crossover the CX-5 looks great, the Mazda 3 and 6 are great cars that look sharp. Hopefully some great stuff comes out of this
Is “looks good”
A valid opinion on the quality of an automobile?
When someone has to fall back on how a vehicle looks to say something nice....
Don’t judge a book by it’s cover.
Don’t spread your judgement
@@fastinradfordable - You are obviously a “go ugly early” man ... a “never make a pretty woman your wife” sort of fellow ...
@@fastinradfordable the guy just said he thinks they look good. He made no judgements about quality. Funny how you tell him not to judge while you're judging him based on things he didn't say
@@fastinradfordable i own a '14 mazda 6. Have 55k miles on it and its been smooth sailing, never once had anything go bad on it
@@fastinradfordable You must be fun at parties
I didn't even have to turn down the volume for this one!
I love Japanese cars. They have a higher standard of honor and Integrity when doing things. They’re the best!!!
I know that they aren’t 100% perfect but no one is but you can actually tell they are dedicated and take a lot of pride in their work.
You can not say that about Porsche, Mercedes, BMW, VW and Audi.
And they tend to commit suicide too.
@@mttyflynn Because commit suicide everywhere. Society just sucks in general.
Oh yes, high standards, honor, working till death! Highest suicide rates! ;D
How does this man pump out so much content? Scotty is a real workhorse.
Great explanation of rotary engine, almost zero mention of a "new" rotary engine. Sorry, thumbs down.
I bought an RX-3 in the late 70s for $300 because the Mazda dealership told the owner, over the phone, the cost of replacing the clutch and pressure plate, but I fixed it for $7 because it only needed a clutch slave cylinder repair kit and a little hydraulic fluid. I drove it for a while and gave it to my little brother who loved that pocket rocket until a woman ran a stop sign and parked her Volare station wagon in the passenger compartment.
One of the most fun cars of my lifetime!
agree, loved my rx4
*The Takahashi Brothers have entered the chat.*
I was going to post this
Aloha
Love the new vids. I been watching for a couple of years, great knowledge and good, informed opinions. Nicely done, you have a gift Scotty. Priceless experience, I've learned so much on this channel. Without getting grease on my hands!
I love my 1mzfe. 20 years old and still runs like a dream 😊
Yer lucky, or dont drive much, how many miles on it?
@@daleval2182 160k miles.
Next week
Scotty Kilmer: Rotary engines suck!!🤣
@Acme Inc. It's not more efficient, it's just more reliable. If a better Apex seal material could be developed, Rotarys would find favour again.
@@amelyntan1990 When more rotary owners learn about how to maintain and drive them correctly, REs will see better lifespans... The seal's premature deterioration is typically caused by abusive/inconsistent driving conditions and lack of proper maintenance. In the performance realm of things I see people try to drive them like they are V8s instead of a 2 stroke motorcycle with four wheels.. which is the best way to approach it, but how many non-performance minded RE owners even know what a 2 stroke is?? It's night and day difference in lifespan between rotorheads and common drivers, unfortunately.
If you think Mazda rotary engine is new your stupid lol
Vacuum cleaners suck!
Apex seals gone in secs
My mazda after 145k miles needed a new seal rebuild pulled it apart and the rotors were crisp smooth, it's mainly because these engines require constant oiling. Soo once my rx8 (2004) gets a new seal pack I'll get running for another 100k qnd it's been damn reliable.
I have 2014 Mazda CX5 and it's a great little suv, I love and it runs flawlessly. Never had problem one with it . I highly recommend them. Thanks Scotty for the dropping knowledge on us as well as you do .Keep up the good work.
@@Techie1224 85.000 factory tires lasted 70.000 And just did brakes at 80.000 it's been a great car on ya battery at 70.000 as well no other problems but I lived up north for the the first 4 years I had so I think that's why I had to replace the battery. IAM down South now much warmer. Thanks for asking 🙂
I added mineral SAE 30 2 Stroke oil to the fuel in my old RX8. This preserves, cleans and lubes the rotor tips especially when it ran on liquid petroleum gas (lpg).
No you didn't
You ran one on LPG 🙄 I gotta see proof of that one!!
@@CommodoreFan64 Common practice in the UK 🇬🇧, search for “Mazda RX8 LPG conversion”. Wankel engines need more work than a conventional engine tho.
Scotty knows mechanical engineering in details
"Rev up your rotary engines!"
probably would go something like
brrrrrraaaaAAAAAAAAAAAAAA stutututu
Vrrroooomm!!!
Annnnnd you’re out of gas.
They’re fun, but they are gas hogs...
My grandfather Was a master machinist and a engineer that knew and worked with Felix Wankel He actually helped design and develop the Rotary engine with him...My grandfather then moved to America right before World War II and became a master machine for the New York Times working with printing presses,Sometimes going to multiple cities in the usa building them.. I owned a gen 2 Mazda rx7 ,Was my second car, I sold it in the mid 90s ,,, i Still Miss the car.
Cool story!
Everybody's grandpa worked on the rotary engine
Did he ever turn back from master machine or is he still at the New York Times all dusty 😎😂
@@INORBET long dead ,,, he died in the 80s , but both my uncles His sons became master machinist for the New York Times printing presses,,,They both retired one is 80 the other is 76 ...ive been to both there job sights one in Manhattan the other one was in New Jersey ,,,very ccol place...
@@dandrechesterfield5411 my uncle also has photos of the 2 guys together ...grandpa and felix ..working and hanging out ..My my uncle passes maybe I'll get the photos ...I haven't talk to either in a while.. i live 2500 miles away now..
With many years of owning rotaries, working at Mazda dealerships, the main down fall is babying the engine. 3 rotations of the essentric shift means internals are spinning at a third the rate of the rpm... internals are spinning at 1000rpm when the tachometer is reading 3k.... the 8s had 9k redline rpm for a reason... it's an enthusiast car... high maintaince and less knowledge abound... but imo easier to work on than a traditional engine. So a dyi person who lives and breathes cars it's a perfect match.
... subbed and liked
Love the rotor.
Have owned my rx4 sedan since 73.
And love it.
Also have a rx8 daily.
❤❤
Mazda also sold a small pickup truck with a Wankel engine. It was pretty fast. The IMSA races of the early 1990’s had two cars with four-rotor Wankel engines. They were fast and very loud.
Scotty forgot to mention that the NSU company also had a single rotor car called the Spider and a twin rotor car that was way ahead in design called the RO80.
Had one LOVED IT.
These little rotary engines are nuts if you get a good one, went for a ride in one back in the early eighties and it was way to fast for the size of the car.
Scotty you never miss 🏎
Love these types of videos. Keep ‘em comin’ Scotty.
beautifully explained. im an automobile engineer and always wished that vankel engines deserved more research and development. hope they develop the technology for better emissions and lesser wear.
Great post, Scotty. You're a good automotive historian. University of Tennessee should give you an honorary doctorate.
A few interesting added tidbits:
(1) It wasn't quite brought out, but the rotor tip seals are lubricated by oil injection into the chamber. This contributes to pollution problems because now you are burning that oil as well as the gas.
(2) The exhaust temperature is much hotter such that the exhaust tubing is roll bar gauge, not the usual thin gauge found in piston engines.
(3) You might argue that the high exhaust temperatures are a sign that combustion is more complete, but high temperatures also contribute to formation of oxides of nitrogen, which is another pollution problem.
(4) Interestingly, in the 1970s Mazda dealt with pollution control not with a catalytic converter, but rather a "reactor". That is, the exhaust was routed to another cylindrical chamber that might look like a catalytic converter but was a hollow chamber. Air from an air pump was also fed into the chamber to complete the burning cycle, hence the name "reactor chamber".
That all said, I miss these engines. I once wanted to mate one of these to a Porsche 914 transaxle and install it in Fiat X1/9. (A friend suggested we also needed something British such as a Lucas electrical system to complete this international symphony. We whapped him.) Sadly, the Fiat was too badly rusted, so this project never came to fruition.
Cheers!
You know the Wankel Rotary would be a perfect engine for a sports motorcycle. Seems much more suitable than a inline 4.
I always wondered if somebody would create such a bike. It would be insane.
Best description of the Dorito-chip engine on TH-cam! Rx-8's get a consistent 16MPG's city driving and 23MPG's highway. That's still the biggest drawback for rotaries.
Longevity is the biggest drawback for me. The combustion engine is so reliable and long lasting
@@jamesfranko5098 Seriously! I have a '98 Nissan with almost 300k miles and it still runs just fine.
Scotty I don't know how you do it, These videos are incredible, The most polished educational and entertaining productions I've seen!
Chicago, Illinois USA - we had a "little blue Mazda" hatchback for years - it ran through the deepest snow and coldest temps
Rotary engines suck fuel like a private jet. Don't forget to mention that part.
7:49 he did
That's because a rotary is actually an impulse fired turbine, it will always drink fuel.
@@nicovalenzuela4044 my mistake.
@Andy Candy someone that wants a cheaper engine OR a race engine
12 mpg. Nothing to brag about.
It's so interesting that everybody wants the most powerful engine out these days. I'm content with my 121 horsepower V6.
youre the only one bud
I'm not content with my 450 hp Mustang GT. I'm going to slap a couple of turbos on that bad machine.
@@outcastgarage420 and I am completely okay with that.
It's crazy that the awkwardly named but super-promising free piston linear motor generator isn't being put in hybrids instead of a rotary, with it's wonderful simplicity and so many advantages if the internal combustion engine has a future then that's probably it, but it's going almost ignored.
Fun fact the world's fastest rotory engines ran 6.06@233mph in a rx8 called loquito killer from PUERTO RICO
Facts 🔥🇵🇷
Everyone must try driving a car with a rotary engine sometime! Years ago I drove a customised RX7, which had been fitted with an extra rotor and a turbo charger! The last time I went in something that fast, it was made by Boeing.....
Never driven one but was a passenger in one with a Greddy turbo upgrade. Incredibly fast! Surprised the heck out of me!
Extra rotor? I’ve taken one of those engines apart, not a lot of room for extra rotors. I’ll just go ahead and strap another cylinder to my v8
@@l-wook ever head of a 20B?
Owned an RX3 in the '70s man that engine was smooth and would rev really quickly. A buzzer would sound when it hit redline... the engine was incredibly quiet. Gas mileage was pitiful... but it was fun to drive
I'm glad he kept his voice under control!!!!!
Love the rotary small and powerful it’s like the two stroke!
@Andy Candy diesel
@Andy Candy commonly oil is added to the fuel, seems to work
When I learned about the rotary engine 35 years ago. We were taught that the motor didn’t last for all same reasons you pointed out. I didn’t see these things being worked out, and doesn’t seam they have today.
Fun fact: Toyota is actually trying to buy Mazda engines & Transmissions from Mazda .
Mutual Toyota-Mazda RWD inline 6 platform is upcoming I hear. New Supra config? 😳
I thot Toyota was trying to buy Mazda engines and transmissions from Ford
My daughter drives a Mazda and she’s never had any problems with the engine or transmission. It’s the rest of the car that’s falling apart!
I wouldn't doubt it lol
@@kayhenry6293 Must be an old model. Mazda’s quality has been sky rocketing lately
I can still see Scotty flapping his arms around as he is doing this video,🤷🏻♂️ lol great video tho
At the scrap yard I saw an old Mazda RX2 get pulled in. It was complete. A man I worked with had a courier that had rotary power.
Rotary engines are nightmares, they consume oil like Home Simpson consumes Duffs beer.
The RX-8s had worse MPG than cars with giant V8s.
And engine cooling issues too
But it's really really fast lol
@@silasmarquez4146 no its not lol
@@silasmarquez4146 Yeah good one.
Scotty I love these new docushorts you're doing. I would love to see a video on Hudson motors. Maybe even Hudson and Nash merger creating AMC. I bet it would be pretty interesting.
Dear Scotty, thank you for tis insightful video on rotary engine, Im 46 years and i have never ever heard of this engine. What a brilliant idea. :)
There's even controversies on how they come up with the motor size of a rotary. They say 1.3 liter while someone else says it's actually a 3.9 liter
I have one, did an engineering degree, given this a ton of thought... and I can't align with one or the other! (1.3 vs 2.6) ;D
Odd, 1.3 x 3 is 4.2 & as that is only one rotation of the rotor ( ie one detonation per 120 degs ) for a comparison with a four stroke ( one detonation per 720 degs) , would that not suggest 1.3 x 6 ie 7.8?
Well, the volume of the air that is squashed for the bang is 1.3 for Rotary so perhaps it's a 1.3. But then on a 4-stroke it uses that volume twice per explosion but it's still called 1.3... but since Rotary uses two different sections for bang and exhaust then perhaps it should be 2.6. However.. is it really 3 cylinder faces (as opposed to 1 bang chamber) in which case it's 3.9. or... perhaps we need all three cylinder faces using two different bang/blow volumes which means it's 7.8. Ho Hum..
@@robertwoodliff2536I had to go do some reading on this lol. So you are using the actual rotor rotation, but they use crankshaft rotation to come up with engine size. The rotary engine crankshaft (eccentric shaft) spins 3x faster than the rotor. If you're looking for the rotary engine size given the same rotations as a 4 stroke than yes you are right (which might explain their bad gas mileage) in that it packs the equivalent of 7.8 liter of working volume 4 stroke engine, there are some people though that consider the rotary similar to a 2 stroke. I think each chamber should be considered like a cylinder since each one takes part in the combustion process and in that case 1.3x3 is a 3.9 liter. And 1.3 is already taking into account that the 13B motor has 2 rotors. For tax and emissions purposes everyone is going to use a different standard
I think if you look at LeMans and the rules and regulations when the 787B raced and the rotary engine they used,it was calculated differently...And that was used to determine the size of the motor for the races.I think thats the best calculated call for a rotary engine size.
Well good evening Scotty, teach me about the rotary engine brother🤔🥁🙌🧰😉🍺
Quality content. Great information. Thank you.