DYNO TEST 74 Year Old Briggs and Stratton HOW MANY HORSES ARE LEFT? Pt.5/5
ฝัง
- เผยแพร่เมื่อ 12 ก.ย. 2024
- Final video for this series! Thanks for watching!
Please check out the first 4 parts;
Pt 1. • FULL LENGTH VIDEO 74...
Pt 2. • QUANTIFY THE WEAR 74 Y...
Pt 3. • PRONY BRAKE DRUM + CAR...
Pt 4. • REASSEMBLY + TEST RUN ...
Playlist here;
• FULL LENGTH VIDEO 74...
![[FULL EP.73] เปิดบ้าน 70 ล้าน "แป้ง Zbing" ยกมาทั้งญี่ปุ่น l เคหสถานบานปลาย l One Playground](http://i.ytimg.com/vi/YBnJhTt07Pg/mqdefault.jpg)
Haven't seen anything from you in awhile...I hope all is well.
I'll be 74 this year just like that motor. I can tell you that runability issues are a real thing. I also have trouble getting started sometimes, especially if it's cold outside. Gas isn't a problem, I have plenty of that. My valves seam to working fine, but my crank has seen better days.
That's a lot of work you went to for us viewers. Thanks.
I am just amazed Mike that something that old can still give you rated horsepower off my a few clicks. I would bet you all I have that a engine made today will never see life all those years for sure. Lets not forget this outlived the engineers, workers, and owners of Briggs and Stratton engine company. Nice work fella too.
Numbers are surprising but so is the fact it runs that good at all, considering the condition of the engine parts... :-)
Tender loving care by the mechanic that put it back togeather.
Homer Shaw of Galesburg, Kansas built 2 wheel garden tractors in the 1930's using this model engine. I had found one at a yard sale in the 1970's and ran it for plowing my garden through the 70's and 80's. The tractor had two steel wheels with spikes for traction, a 10" plow and a sickle bar mower. Steering was accomplished by individual brakes on the two wheels. The transmission was as used in automobiles with three speeds forward and on reverse. The reverse was a wonderful thing as, befor, had a David Bradley (Sears) with no reverse and if you I came too close to the fence at the end of the garden I had to wrestle it out and it was HEAVY. The Shaw could simply back up and be ready to go. I do remember that it was best to leave the engine idling as I went to lunch as if I didn't it was hard to start although it started easily for the first time in the morning. Thank you showing your Briggs. Oh, Mr. Shaw called his tractor the Shaw Do-All.
The hard starting hot was due to weak spark Ignition coils lose efficiency when at operating temperature. Very common with magneto systems.
Back when engines were built to work and built to last. Quality was first over largest profits possible. Thanks for bringing me along.
I think it's a compliment to Briggs for it to even stay together for the wear it has. The older ones were the best. Thanks, Mile! GBWYall!
Old Briggs engines never die .... unless you run them out of oil! Great job!
Master Man! I am Brazilian and I would work for free just to be able to absorb your knowledge. And I'm not kidding.
When I was 12 I need a air compressor I took a Briggs 1 1/2 hp engine and cut the camshaft in to and brazed the cam lobes 180 degrees apart. Then removed the carb and muffler and made a check valve with a spark plug, ball bearing and a spring. The engine would suck through intake and the exhaust and exit through the spark plug check valve like magic I had an air compressor 90 lb output
Very clever!
Considering the junk coming out of China, you’ll be lucky to find one intact In 7.4 years...let alone runnable or anywhere near rated horsepower. Even brand new most stuff won’t run at rated once the marketing dept. designs the box.
I bought a Chinese generator from Aldi. It ran for 10 minutes while I gave it an Initial load test.
It never started again.
I went to get it repaired under warranty and they had no options at all after considerable pretending that they did.
In the finish they refunded my money and probably dumped it. Life cycle 10 minutes!
I’m sure I could have fixed it and voided my warranty. The whole process was insane and sad that the choice was just dump the dud ones.
I try to avoid Chinese crap these days.
@@DavoShed hahahaha 10 mins wow that's dire. I bought Chinese once.
I'm surprised how well it runs, considering how worn out it is..... then the power output. Guess thats why they had a good reputation. I wonder if the engines torque range is closer to the mid range rpm???..... I found your video very interesting.
This was a great series, imagine that engine when it was newer, even now with a few new parts it could be in service, thanks for taking the time to show us
A HUGE amount of effort. Just to satisfy curiosity. You must love your work.
Enjoyed every minute of all five install installments. Thank you.
VERY interesting chunk of cast iron you got there .Love the home made brake !
Thanks Mike for taking the time to perform the detailed test, very interesting. Based on the bore and stroke, 8.95 cubic inches should yield a max torque of 5 - 6 foot-pounds, assuming the compression ratio is around 4.5:1. I think Briggs and Stratton used to derate their engines more back in the 1940's. In 1968 I remember looking at a Sears catalog from the 1940's and the rated engine horsepower was about half what similar sized engines in the late 1960's were rated. It's hard to beat cast iron for a rugged engine material.
Worn out rings, worn bore, crank and rod gave their all years ago but you have a little old engine there that works with a big heart and won’t give up. I’m shocked it didn’t blow blue smoke while working. Amazing. This has been an interesting series of posts. Thanks.
Great video Mike!! Just imagine how much work this old engine performed before it was shelved. Think about every time the owner went to start it up and either blessed it after two pulls or cursed it after twenty.
Excellent & Clear study Michael. Good Old Briggs & Stratton.
They just can't be faulted for their very clever & functional design.
WOW!! What an amazing construction of apparatus to measure small engine horsepower, torque at various rpm speeds. Very unique and innovative on your part and very informative as how to make the measurements. Thank you for sharing your knowledge, expertise and, in this case, how to make complicated gasoline engine specifications easier to understand. Well done!
Hi Mike, thanks for the video. It has taken a lot of time and effort to produce I am sure. Again many thanks from Nr Liverpool UK.
I have worked as a small engine mechanic for the better part of 20 years now, and I'll be honest the best longest running engine across the board are these old cast iron engines. They always out last and out proformer over hours of service then the newer aluminum engines. While the Aluminum engines definitely will out perform in HP and RPMS they just don't beat there cast iron predecessors in over all long jevity and run hours. Anther case of quicker doesn't always last longer.
Lol I used to collect these ..I restored a 1938 model WB...it had a cast iron head and a pedal start..it was on a cream separator at a local dairy...it was a fun little motor..occasionally I'd get close to a horsepower lol...the carb had a hole the size of a pencil
Been watching for your videos for a while . Hope you are well. We were sick with the plaque for about a month . but not every one dose as well as we did . So hope you are well and will be posting something. I love your channel you are humble and not cocky. Nore do you blast music. Just content ! Love that.
I have one of those. They are real workhorses. Unless you took yours apart, here are a few interesting pieces of trivia.
This flathead (no overhead valves in the head) is relatively unique as the spark plug on the side does not screw into the combustion chamber, but screws into a small side pre combustion chamber with a small passage between the plug and chamber. The head is unique as the head fins are channels through the head for a smooth top on the engine without exposed top fins or a tin cover.
The engine contains a real weight driven governor inside, and not a wind vane as is common on lawn mowers. Last time I fired mine up, it ran fine.
The crankcase base is cast iron, and is oversize compared to modern engines. I have kept mine since I got it in high school due to the very unique design features.
Sweet little engines.
I just had a Briggs on a snowblower die after 30 years of very hard use.
Yeah, I'm pretty rough on my Tecumseh as well. Mine is 31 years old. Hardly any compression , but still starts in the cold.
Mine is 30 to 52 years old. Young lad here and it might be rarely used. It was originally a portable water transfer pump, so it might have been used not so often. I'm building it into a front wheel drive bicycle with a makeshift turbo.
Considering the age of that old engine, those readings are pretty remarkable. Thks for taking us along for the ride.
That engine is Awesome !!!!! Briggs and Stratton really meant the business back then. Despire being "Worn out" it still ran great. I didnt see ANY Oil smoke (burning oil) I want one of those Model A's !!!
Nothing beats a good ol' briggs
Jumping on the rewind the coil bandwagon. Awesome vid! Thanks for putting this together
The old Briggs is still going strong as worn out as it is. That's impressive! Thanks!
With "strong" being the key word.
Shocking results for how worn out it is. It’s a nice running little engine all things considered. Thanks for the demo on the prony brake! Very cool.
Thanks for all your time and effort expended on this interesting project which is beyond the call of duty.
And of course we all know, manufacturers today are not allowed to rate their small engines in hp for sales because of past fraud by some. They are now allowed to advertise only displacement but not HP.
Always enjoy your videos! I'm about as old as that engine and sputter some of the time too, but still can get the work done! I miss NJ, home of reasonable people and Taylor pork roll!
Great video, Mike. What a great fun way for kids and all of us to see visually how horsepower and torque are calculated and how you measured the speed and foot pounds to get the data. Science teachers take note. A great classroom video. Love your videos.
This is fun and now I'm wondering what numbers you might get with a modern carburetor on it😊
Sweeet test. Well worth the effort. Excellent work. NOW, give the engine a basic overhaul and run the numbers again!!
That was a lot of work for part 5. Thank you.
Great job on that test!
Impressive numbers considering the state of the engine...
8-0
Love that test rig, wish we had that back in our scooter racing days!
:-P
Thx a lot!
Wow.... Cool.
And also, seeing a rewinding of the ignition coil would be interesting... Just saying ;)
love his torque-o-meter !
Thanks for sticking with it and working through the technical difficulties! Some would give up but you're obviously of above average intelligence. Excellent vid, learned something and cool to see a cheap but also scientific process for doing this!
Like that idle of the old Briggs engine. They just hammer them out 1 - putt at a time. Grrrrrr8 video 👍
The RF interference was a very common problem with the points and condenser ignition and the radio. In my 62 Falcon I bought a set of solid copper core plug wires with red clear outer rubber and the noise in the radio was uncontrollable. I even used the frequency filters on the plugs. Radio frequency interference and electronic devices of the analogue era and even today with sound equipment, wireless devices with musical or audio systems require sophisticated frequency filters to reduce that interference. I remember driving around with the popping sound of the spark plugs in the radio. Those were the days. Lol
Thanks for the video. Maybe try doing an all analogue version with a mechanical scale, timing light, and ocyliscop old school style to show just how far technology has really come.
Wow that was exceptionally interesting. Great job. Thanks for the video.
Mike - very impressive and enjoyable video as usual!
Congrats on the systematic and methodical way you work on these interesting old machines.
The world needs as many engineers of your caliber as it can get.
Amazing how close to its original Power output it actually is even with all of the significant wear. I bet if you just honed it lightly and re-ringed it it would probably run significantly better. That would also help with the oil consumption. Which if left unattended and in long-term operation would definitely be what kills this thing. That and take a look at the intake valve gapping
They built these small engines back then to LAST! Even though there are some good small engines available today they would not have the longevity of those old cast iron donks, they really are throw away these days, reasonably reliable but not worth rebuilding after X amount of hours or work, l have a few original old engines that run beautifully that are quite elderly, engines like the Villiers, Ronaldson Tippet ( built here in Australia) and l reckon the best & most reliable small engine from Honda is the “G” series side valve units from the 80’s they last forever but that’s my opinion based on the range of machines from pumps to generators that they were installed on when l ran a few equipment rental companies a few years back now, that was a good interesting test that you did as all your subject matter is great viewing, cheers for your efforts.👍
Great demo of a brake horse power test. I have only ever seen that as a line drawings in text books.
It always looked very subjective. Your demo showed that it can be accurate and repeatable. Well done!
Runs like a top for how shot the thing is. You can hear the rod clanking nice stainless paper
Truly impressive! Thanks for the test and perseverance with the audio. They built a lot of margin in these engines for sure.
Amazing, no smoke! Runs clean after all these years.
The old cast iron Briggs engines from years ago were very reliable, and long lived, as your video demonstrated. Bravo, thanks for the entire series! I didn't think it would do as well as it did/
Thanks for taking the time to do all of this work for us , but Yes very interesting . Always good videos .
Amazing that this worn out engine doesn’t smoke hardly at all! Great vid Mike! 👍👍🤘🏻🤘🏻🇺🇸🇺🇸🇺🇸🇺🇸
Excellent job making your Prony Brake Dyno.
I’m going to pretty much replicate what you did so I have one for my small engine test.
Very interesting results, pleasantly surprising considering how worn out it is! Also, Thank you for taking the time to address the sound issues. Can't be easy having to re-take what you've already spent hours doing although it did come with the bonus of learning the repeatability in this case. Hugely impressive for an engine so badly out of spec, that it even held together with some of those tolerances was testament to the quality.
Surprised, with the excessive tolerances you found I would have never thought it would run that well. Great series and excellent concept. Thank you for all the effort, you put into the project. Much of the success was due to your knowledge. Thanks for sharing!
What were you running for fuel? Just remember that era engine ran leaded gasoline, which gave a little better performance then today's fuels!
Great series of episodes. Interesting to see the progress and the test in the last episode, 😎👍
Thanks for the videos, more informative than the usual will it run video
Thank You. A very well thought out and presented video..............Jay
I would love seeing it built to next level. Polish the crank find a newer rod and bore the block to the next size up bigger piston grind the valves. And definitely a modern enough Briggs&Stratton Carburetor.
very nice; it would be interesting to see what the power would be with a full up rebuild, including new oversize piston and new ignition system. thanks for sharing,
Mike this has been a great series a videos. I was really surprised how well it performed for an old engine. Thank you for all your hard work and time to make this series of videos buddy!
Congrats on a great project. In your work it helps to experience this kind of performance measure. Its down in the nitty gritty of details to do performance testing but comparing all the wear tolerances you found on disassembly and measurement and the actual running its amazing these little workers just keep giving.
Hi Mike, you doing ok? Have not seen you in a while.
Jim
Damn man, you make the professor on Gilligan's Island look like Gilligan. nice set up.
Considering how worn out it is I’m surprised that it even started. The fact that it made rated horsepower is mind boggling. Maybe they were very under rated when new?
It’s quite possible, though keep in mind they’re usually rated for continuous power and not peak
We have much better gas now too
@@thatyoutubeguy7583 no no we dont :-( its had a lot removed. a lot. and now ethanol.
Interesting exercise. What strange things we enjoy! Haha good vids
Very interesting!.I'm guessing you'll re-build it and test it again! :-)
Ah, the rare 2 HP wing nut loosener.
This was a great series, i really enjoyed watching it start to finish. thank you so much for creating this and sharing it with us . very comfy
After seeing the internals of this little engine, I can't believe how well it runs and how well it performed.
Excellent demonstration of rating an engine using a Prony brake. Also intersting in that an engine in which all clearances are far out of spec can actually outperform an engine freshly built (or rebuilt.) The tradeoff is less efficiency for less internal friction. Your thorough cleanup allowed that tradeoff to be measured by the Prony brake. Without that, I doubt you'd have gotten those torque values...or would it have survived to test run. Great job all around!
This has been a very enjoyable series and I am especially impressed with the final Stainless Steel On-screen Grafix :-)
Excellent series Mike! Thank You for all the hard work.
Jim
Not bad at all. New ones wouldn't last 74 years....
Great job, explaining torque/ horse power. Great videos! Thank you.
Some of the new Briggs engines won't last 74 hours!
@@ericgabriel4190 Maybe that *&(* Stratton has something to do with it.
I am amazed the engine even runs at all after seeing how worn all the moving parts are. I have been waiting to see this video after watching the first 4 parts. You could make a new rod with proper clearances, and new piston rings that fit properly. Then rerun your dyno tests and see if you improved the power that little engine could make.
I enjoy all your videos!
Love your vids, keep em coming!
Good luck on finding a coil! I've been casually looking for a 5S magneto coil (occasional ebay peeks and asking at small engine shops I come across) for ten years. Runs fine with external coil like you used but total loss battery is a pain.
Thank you Mike for all the work you do videoing these engines!!
Even the audio cut-out sounds so dope. Electro magnetic field something interrupted the wireless signal??? If that happened to me, I would have just swore on my wireless-mic for being useless, instead of finding the actual problem.
I'm quite amazed! I was guessing it would be down to .25HP :D Thanks for doing this video Mike, it was very interesting :)
I did enjoy following this project! I grew up on a farm in Minnesota in the '50's and these style engines were everywhere pumping water, running grain augers, etc. Many were various model Briggs, also Clinton, Tecumseh, Wisconsin and more I can't think of at the moment.
It would be interesting to see how an overhaul would impact the HP test data.
Great video series! At first I thought your torqueometer and loading brake seemed "hokey" like how can that setup provide accurate data. But after watching how smoothly the motor was running and how repeatable your results were I am a true believer!
And the combination of simple mechanism with high tech modern measurement equipment directly explains the units we use, such as foot-pounds for torque. Demystifies the terms we use every day with only a passing understanding of them.
Great video! Love the old thumpers. Would you consider making a few more discs
/ Wheels and testing some old Wisconsins?
Excellent well explained series, look forward to more.
Wow that's crazy! I wasn't expecting it to do that well at all lol! No modern engine would even last 70 something years let alone be able to produce it's rated hoarse power being that worn out! Crazy! Also, would you consider explaining how you hooked up the battery ignition system? Every time I have tried to do it, the engine will run but runs very poorly so I think I am doing something wrong lol. Looking forward to seeing more soon!
I would like to see that as well.
What a neat experiment cool
That was a fascinating series Mike - thanks for the education!
Thanks for the great idea. I have an old iron horse on a Bob-A-Lawn mower and the flywheel is too weak to fire the magneto. You just showed me how to get it running. 👍😊
Amazing how well that old beastie is working. I have similar low speed issue with my old Gravely walk behind with a updraft Zenith cab where the throttle blade is so wore out on the sides from it bouncing around that I can't get it to idle below 1200 rpm. Good vid.
Those are some amazing numbers especially considering the age and condition. I am shocked! Now there is something you don't see every day.
definitely deserves a good repair, at least, might not be able to do a full rebuild back to new, but it should get a good going through
I'd like to see you rewind that coil .. #6 of 6? 👍👍
Interesting especially considering the friction loses in the friction prony brake. Still an excellent set up-you even beveled the boards on the test base! Of course you could have resorted to old GM marketing tricks of using exhaust scavenging, electric brake to discount friction-that old Briggs would be good for at least 5HP! Fun video!
Great video series. Would be intetesting to know the impact of modern fuel on the engine ratings.
Thank you very much