Thermal expansion on the gears could be a problem, looks like custom one piece pinions joining the two motors on each side would be an alternative. Good work Raz!
What form of expansion are you thinking about? Radial? If you mean the width. Then I can’t see why it would ever be a problem. They are spinning the same direction. Now radially. I could maybe see that as a problem. But it could be adjusted out so the tolerance would be right once they are at running temp. Would just be a little loud while warming up the first few runns
@@Mad.Man.Marine axial expansion towards each other, I know for a fact those motors do not use thrust bearings and only have two radial ball bearings on the shaft which cannot handle axial loads. The shafts and the gears will expand with heat. It will at minimum create extra drag and convert wattage into heat. Long term it will ruin the bearings in the motors. To deal with this he could use a captured one piece pinion with needle thrust bearings for each pair of motors that floats on the shafts with no set screws and would allow for expansion. This may seem over engineered but I can't help it, I work with bearing tribology, and industrial rotating equipment reliability every day lol.
@@Simon-jr2oe a rough formula for stainless thermal shaft for growth is length x temperature rise x .0000065(coefficient for stainless shaft growth) 4.5"x140x0.0000065= .004" Then multiply that by 2 because there are two motors end to end which is over .008" 8 thousandths converted to metric is 0.2mm+ and Raz said there was about a third of a mm clearance between the gears at ambient. Include the growth of the pinion gears themselves, or higher temperature and yes it could be contacting and creating an axial load on bearings not designed for such forces. Additionally these are "permanent" lubricated bearings and that oil will be vaporized by the heat and contribute to additional friction and losses.
Raz - the machining and workmanship is absolutely top-notch! You are probably learning so much from this type of extreme build that many 'makers' would never get the experience to learn because of the sheer problems surrounding the power transfer alone. That doesn't even account for trying to keep everything inside of the car's footprint and map out where the parts need to go to make it work. Bravo on an amazing build.
Im looking at this already and chassis flex will be changing your mesh dynamically. I would say put another carbon plate to stiffen everything above the motors as well, like a brace. It will help immensely
You're always going to be fighting flex, he really needs to pause and redesign the motor mount assembly to be monolithic. That's the only way you're going to get the required stiffness out of it..
Looks good but I have doubts. Those gears will be stripped due to the power and the tiny area of contact. Personally I would turn around the motors and use 2 spools this will give you 4 times the surface area for the pinions and much less stress on the now doubled spool gears. Hope it works out for you, all the best.
@@markmmm1737 steel gears, 5mm engagement on either side, properly meshed, it's gonna be fine "Stock" really doesn't say much, could be plastic or aluminium gears, not meshed correctly, heck, even the wrong type of steel could be reason enough ever see a 4.6 bolt? gonna strip long before it's tight
Would you be able to have 2 motors run the left drivetrain and 2 on right? I don't know hardly anything about electric RC's. I take it with programming, the 2 sides could the trimmed to match power???
The music at the beginning is awesome and suits the video completely. Celebrate the quadness and the machining of the pinions on some classic machines.
Really really impressive, I have to think the middle drive gear is going to get beat on pretty badly. Having some form of mechanical slip clutch in that center gear may save it and still transfer the power.
Everyone is speculating about what is going to fail in the drivetrain. I am confident Raz will find the weak link on the first outing. Keep pushing the limits, it’s what makes the hobby so much fun.
@@keithbranch7718 right! When I build a rc I honestly try to build them like Raz super clean top quality go fast parts and less is more sometimes. I look at it if I'm going to spend 150 on a semi ok servo why not go all the way in and get the best money can buy even if I have to save up. My k8s exb build is finally done an it sits at about 2100.00 that not including my spektrum dx5r pro 2021 radio..... Waiting for Xmas to drive it for the first time! Cheers!
Top noch build as usual, but man, editing is at the same level if not better. The first part of the video and the conversation with the machinist is awesome 😝😝😝, you made my day. Keep pushing Raz!
Man you do the most epic builds Raz. I’ve just done my first scorched infraction chassis , Raz carbon shafts , all the other carbon goodies and it’s all thanks to you and some of your tutorials vids. Thanks heaps.
LOVE your instuction videos !!!😉😉👍👍I have some rc cars and love them...but don't know alot about the things you are doing 😲😲...but... with your instuctions i really understand alot more about keeping my cars running great...!!!👍👍 "GREAT VIDEOS THANKS FOR YOUR TIME ...AWESOME...!!!🙏🙏😉😉
The video got that many views because it was bad ass you need to do the part two of that video with the wider setup no one has tried that type of blade set up and it worked get
driving down the road and never let your eyes off the gears, some priceless video. that editing was gold. oh yeah, I got a question. I know this sounds a bit excessive, but, are you going to clock those motors, so they're exactly in phase, considering that they're hard locked to each other (no clutches, slippers, etc.)?
Hi Raz, this is an insane build, loving it so far. Can you get custom pinions with 2 spigots so both facing motors use the same pinion gear, this will guarantee matched timing.
@@krisallen6466 it will work, no doubt. But it is more about longevity/lasting. This car will likely run at short bursts anyway... 60hp,lots of torque. When it goes wrong it is likely a spectacle :-) Either way it will run.
When talking about gear mesh, there is a small amount of tolerance allowed when setting the motors in place, however there is way less tolerance when attaching two shafts like that. Since they are rotating, any misalignment will cause an insane amount of stress on the components involved and most likely break something or loosen screws at a very fast pace.
Always taking it to the next level Raz, this is awesome! I’m sure this put a smile on your face when everything fitted so neatly, with such fine tolerances 👏👏👏👏
Omg😮😯 those scorched RC parts look absolutely beautiful. I have lots of questions about this already but I don't want to bother you too much with them. This is exciting, can't wait to see the next video. ❤️ Sending you love from France 🇫🇷
Dudes rc car is more powerful than alot of cars from the 50's, and probably more powerful than some in the 70's, that's insane coming from small 4 electric motors.
Wow ! I think only a genetically modded pilot could handle this car ! Ime a bit worried on the center pinion, this poor guy is arrassed by 4 motors, 4 huge pinions that cover over his own conception, I 5hink the center pinion should be just larger ... To have 100% of contact surface for all 4 motor. Ok...you read it? Now we want to see your next video for sure ! 🤓🤓
Gotta check HP at the wheel. HP means nothing if ya can't plant it. In the end, like all things, it comes down to traction. Still going to be fun to watch.
That was pretty cool. I was a machinist when I was younger, so that's all very familiar to me. Ughughughugh! Looking forward to more of this car. Wonderful parts from Scorched btw. I reckon that you might have problems with that set up, the pinions and shaft gear. Happy to be wrong though.
Man I have been waiting for this vid and can’t wait for the running vid as well. You are truly a genius and a leader in the rc world. Everyone else is just a follower.💯
this thing is gonna be crazy!! 203 here we come!!
You better hurry up with that build Kev!!!
more like 300 lol
Shame you got your hands full with your monster truck, would like to have seen a race to the record between both of you
you got that shredder ready kev?
Yeah that race would get crazy views
Everything You Need Is Here..
www.perfectpassrc.com/
Thermal expansion on the gears could be a problem, looks like custom one piece pinions joining the two motors on each side would be an alternative. Good work Raz!
What form of expansion are you thinking about? Radial? If you mean the width. Then I can’t see why it would ever be a problem. They are spinning the same direction. Now radially. I could maybe see that as a problem. But it could be adjusted out so the tolerance would be right once they are at running temp. Would just be a little loud while warming up the first few runns
@@Mad.Man.Marine axial expansion towards each other, I know for a fact those motors do not use thrust bearings and only have two radial ball bearings on the shaft which cannot handle axial loads. The shafts and the gears will expand with heat. It will at minimum create extra drag and convert wattage into heat. Long term it will ruin the bearings in the motors. To deal with this he could use a captured one piece pinion with needle thrust bearings for each pair of motors that floats on the shafts with no set screws and would allow for expansion. This may seem over engineered but I can't help it, I work with bearing tribology, and industrial rotating equipment reliability every day lol.
How much would it expand? I don’t rly see it expanding enough to be a problem
@@Simon-jr2oe a rough formula for stainless thermal shaft for growth is length x temperature rise x .0000065(coefficient for stainless shaft growth)
4.5"x140x0.0000065= .004"
Then multiply that by 2 because there are two motors end to end which is over .008"
8 thousandths converted to metric is 0.2mm+ and Raz said there was about a third of a mm clearance between the gears at ambient. Include the growth of the pinion gears themselves, or higher temperature and yes it could be contacting and creating an axial load on bearings not designed for such forces.
Additionally these are "permanent" lubricated bearings and that oil will be vaporized by the heat and contribute to additional friction and losses.
The gears will strip 100%. Should at least have used herringbone for lager contact area.
That is some gorgeous craftsmanship right there. Absolutely beautiful
Raz - the machining and workmanship is absolutely top-notch! You are probably learning so much from this type of extreme build that many 'makers' would never get the experience to learn because of the sheer problems surrounding the power transfer alone. That doesn't even account for trying to keep everything inside of the car's footprint and map out where the parts need to go to make it work.
Bravo on an amazing build.
Im looking at this already and chassis flex will be changing your mesh dynamically. I would say put another carbon plate to stiffen everything above the motors as well, like a brace. It will help immensely
agreed, I also have my doubts that the pinion can take all that torque. otherwise a sick build. cant wait to see it run. better feed power in slow
You're always going to be fighting flex, he really needs to pause and redesign the motor mount assembly to be monolithic. That's the only way you're going to get the required stiffness out of it..
Looks good but I have doubts. Those gears will be stripped due to the power and the tiny area of contact.
Personally I would turn around the motors and use 2 spools this will give you 4 times the surface area for the pinions and much less stress on the now doubled spool gears.
Hope it works out for you, all the best.
Or he could make the shaft sprocket wider.
realistically we are talking about an RC car here, the tires would spin long before anything would be close to slipping
@@nathanwest2304 Then you have never seen a stock rc car strip out it spur or pinion gears.
@@markmmm1737 steel gears, 5mm engagement on either side, properly meshed, it's gonna be fine
"Stock" really doesn't say much, could be plastic or aluminium gears, not meshed correctly, heck, even the wrong type of steel could be reason enough
ever see a 4.6 bolt?
gonna strip long before it's tight
Would you be able to have 2 motors run the left drivetrain and 2 on right? I don't know hardly anything about electric RC's. I take it with programming, the 2 sides could the trimmed to match power???
The music at the beginning is awesome and suits the video completely. Celebrate the quadness and the machining of the pinions on some classic machines.
Awesome! Better hurry! I'll be hitting 205 next summer 😉
Really really impressive, I have to think the middle drive gear is going to get beat on pretty badly. Having some form of mechanical slip clutch in that center gear may save it and still transfer the power.
Haha I was going to say you used Kevin Talbots music, then I saw his comment!
You have the cleanest builds ever
Man This Monster is gonna be amazing~!
That's more power than some road cars. I'm genuinely impressed.
I like the wall paper, it's gorgeous
I came here for the RC car video, but I can't help but notice how awesome your home is!
I dont even have an RC..... One day...... Butni love watching your builds
Everyone is speculating about what is going to fail in the drivetrain. I am confident Raz will find the weak link on the first outing. Keep pushing the limits, it’s what makes the hobby so much fun.
Sheesh! That thing is nuts! Excited to see it run!
I love that Phantasialand-Music👍😂
Your pinion is as big as my spurgear . Crazy build.
I haven’t even watched 1/4th of the video but the intro I already love it
Love it ! Absolutely epic build
Your explanations are great. Im not a newbie, but for those that are, you make it about as simple as you can for such a complicated setup.
Did you wake up from a dream one day and say you want a quad motor limitless? Epic build man
You and that old guy are amazing
I completely lost it when he started exercising! 😂
This is awesome!
Raz this is the best channel on TH-cam by far IMO!! and this is the kind of stuff the rc world needs!!! Super EP Raz!!!
Keep it up!!
Definitely is and the most professional n take the build serious still love watching Kevin channel...
@@keithbranch7718 right! When I build a rc I honestly try to build them like Raz super clean top quality go fast parts and less is more sometimes. I look at it if I'm going to spend 150 on a semi ok servo why not go all the way in and get the best money can buy even if I have to save up. My k8s exb build is finally done an it sits at about 2100.00 that not including my spektrum dx5r pro 2021 radio..... Waiting for Xmas to drive it for the first time! Cheers!
ahh, carbon fiber, precision cut billet aluminum, 15 horsepower green anodized beasts arranged face to face, yeah I just subbed. I'm in love.💥🤯💥💯💯💯
As a child/teenager I was really into RC cars (still am) and I always dreamt of a custom build like this - thank you for sharing!
Can't wait for this amazing build to fire up.
This must be 60 of those MAGIC Chinese HP's we all hear about ?
Epic intro. That machinist is a hero!
RAZ YOUR SOO COOL !! YOU SHARE YOUR WORK YOUR ACHIEVEMENTS WITH THE WORLD . YOUR A LEGEND !!!!
The sound of success! Amazing build
I like how your videos are like a motion picture production! Awesome!
8:16 EPIC wow! Rolls super free also 👌🏼
🔥🔥🔥Big like from France 🇫🇷 👍🏽 👍🏽
OMG, the drama and tension!! Haha, I love it!!
Top noch build as usual, but man, editing is at the same level if not better. The first part of the video and the conversation with the machinist is awesome 😝😝😝, you made my day. Keep pushing Raz!
I was excited to see one motor per wheel... This setup doesn't make much sense to me, at least split front and rear wheel traction! :)
The more the better 🤣 I like this idea.
Super intro man! 😍! Let’s see this happen!
Badass guy right there :)
Machining well is definitely a super power!
Wow I hope spool don’t explode under load. This is insane!!!! Thanks for sharing all the great content and creative engineering.
Your videos keep getting better and better it’s great
This build is epic! It even has more horsepower than my car!
Twice as much as you need. Power is not the problem. Still amazing
Love the silly goose reference
I use that all the time raising my 3 boys, as a full time stay home dad
th-cam.com/video/IV3dnLzthDA/w-d-xo.html
lol...
(EDIT: Re your name, not your comment...)
I am more interested in a tour of this gorgeous apartment. Amazing design…oh yeah, good RC work ;)
Belongs in one of those museum display cases!!
Yow Raz, really kool shavings! If Saga could see u now!🤣🤣🤣
Gooodayum !!!!! This thing will fly !!!
Whats the spec of the battery? How much voltage and max current dies it have? I doubt its anywhere near 60hp.
Man you do the most epic builds Raz. I’ve just done my first scorched infraction chassis , Raz carbon shafts , all the other carbon goodies and it’s all thanks to you and some of your tutorials vids. Thanks heaps.
Awesome as always brother!!!
Cant wait to see her finished up!!!!
Ok I was not expecting the way the motors meshed to the drivetrain to be like this….. what an absolute unit
This puts a new perspective on an all motor car
I'm probably a little behind on your channel but I will catch up, anyway the car looks very nice, very clean & neat...👍👍
Greatest opening video... Like trailers movie in Hollywood 🍻 cheers
Mega video this time, well done! Looking forward to see her performing.
The machine shop is always epic. You build awesome toys Mr. Shifrin 🏆🎥🤝🤙
Man! the intro 😆 your so funny
RAZ Just Send It All ready 👍🏻🇬🇧
Raz it is one epic build! Awesomeness 👊🏻👊🏻👊🏻
Hi Raz, genius idea man, really liking your engineer 👷♀️, he’s a funny 😆 guy.
Omg! Amazing build as expected ;-) can’t wait to see more!
Greetings from Northern MN 🥶! Awesome bro, top shelf!!!
This video was amazing raz I can’t wait to see these new builds on the runway
Absolutely crazy brother!!!!
The intro is epic.
LOVE your instuction videos !!!😉😉👍👍I have some rc cars and love them...but don't know alot about the things you are doing 😲😲...but... with your instuctions i really understand alot more about keeping my cars running great...!!!👍👍 "GREAT VIDEOS THANKS FOR YOUR TIME ...AWESOME...!!!🙏🙏😉😉
Raz it's just absolutely crazy what you want to build there
I just wanted to add that your mechanical skills are excellent and the car looks awesome. But my comments below about the motors still stands.
awesome cant wait to see it run
The video got that many views because it was bad ass you need to do the part two of that video with the wider setup no one has tried that type of blade set up and it worked get
My goodness raz. 😮😮😮. that is an absolute insane, wicked build. can’t wait to see the video on the speed run. 👍🏼🚗
driving down the road and never let your eyes off the gears, some priceless video. that editing was gold. oh yeah,
I got a question. I know this sounds a bit excessive, but, are you going to clock those motors, so they're exactly in phase, considering that they're hard locked to each other (no clutches, slippers, etc.)?
love the milling, drilling, cutting everything🔝 very clean build wow🤘 gogogo🏁
Champ is here! Keep it up!
Hi Raz, this is an insane build, loving it so far. Can you get custom pinions with 2 spigots so both facing motors use the same pinion gear, this will guarantee matched timing.
Right, else there is still some chance to ruin the teeth on each on the motors. With a shared pinion it is less likely to grind off an edge.
I think it will work the way he has it. Probably easier to match them up individually I’m assuming to get the timing right on the motors rotation
@@krisallen6466 it will work, no doubt. But it is more about longevity/lasting. This car will likely run at short bursts anyway... 60hp,lots of torque. When it goes wrong it is likely a spectacle :-) Either way it will run.
My name is razin
When talking about gear mesh, there is a small amount of tolerance allowed when setting the motors in place, however there is way less tolerance when attaching two shafts like that. Since they are rotating, any misalignment will cause an insane amount of stress on the components involved and most likely break something or loosen screws at a very fast pace.
Always taking it to the next level Raz, this is awesome!
I’m sure this put a smile on your face when everything fitted so neatly, with such fine tolerances 👏👏👏👏
Can’t wait to see how this turns out!
Great work, keep it up.
Omg😮😯 those scorched RC parts look absolutely beautiful. I have lots of questions about this already but I don't want to bother you too much with them. This is exciting, can't wait to see the next video. ❤️ Sending you love from France 🇫🇷
Your editing is getting insane 😎
Once again. Elegance applause 👏
Absolutely epic! Keep up the great work
Dudes rc car is more powerful than alot of cars from the 50's, and probably more powerful than some in the 70's, that's insane coming from small 4 electric motors.
Was pretty cool but PLEASE DUDE PRETTY PLEASE GET TO THE DANG MEAT AN POTATOES TO SHOW THIS TECHNOLOGY TO US ALREADY? 😂
Wow ! I think only a genetically modded pilot could handle this car !
Ime a bit worried on the center pinion, this poor guy is arrassed by 4 motors, 4 huge pinions that cover over his own conception, I 5hink the center pinion should be just larger
... To have 100% of contact surface for all 4 motor.
Ok...you read it?
Now we want to see your next video for sure ! 🤓🤓
Gotta check HP at the wheel. HP means nothing if ya can't plant it. In the end, like all things, it comes down to traction. Still going to be fun to watch.
Recently subbed. Love ur vids
That was pretty cool. I was a machinist when I was younger, so that's all very familiar to me. Ughughughugh!
Looking forward to more of this car. Wonderful parts from Scorched btw. I reckon that you might have problems with that set up, the pinions and shaft gear. Happy to be wrong though.
Looking sooo good 👍👌👍
Man I have been waiting for this vid and can’t wait for the running vid as well. You are truly a genius and a leader in the rc world. Everyone else is just a follower.💯
Great project" very well engineered,
I think I'll get back into RC one day when I have time..
2:17 change your locks, a good lockpicker can break into your apartment just off a picture of the bitting on your key
Nice job nice day nice video
I bet you anything those gears are gunna shred sooo fast :p
Like a SWISS WATCH!👍