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Yerf project
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Author:  Newtoyerfn [ Sat Apr 12, 2008 12:19 am ]
Post subject:  Yerf project
hello everyone. Like just about every one out there a 150cc is just not cutting it anymore...lol...looking into new engine's and found this cheap 342cc engine can you tell me if it would work it's model number 21M114-0923 under briggs and straton and snow thrower

Also I was looking into something like this model number OV691EA-600833 under Tecumseh and vertical shaft. Yes i know it's a vertical but what about one of these under Engine parts and accessories, transaxles and differentials like the very first transaxles or would that be too slow???

The web site is www.sedkc.com

thank people for your help.
Author:  guy48065 [ Sat Apr 12, 2008 9:09 am ]
Post subject: 
On a vertical shaft engine how would you get the power to the horizontal axle? I'd skip that idea.

The B&S: What's the HP?
What would you do for a transmission & clutch?
You'll need to swap the 230V electric start for a 12V starter.

Industrial engine are meant to run continuously at one governed RPM. They will work at varying speeds but the throttle response might be less than ideal.

I think you could get a killer used ATV with engine with trans for the same money you'll pay for the new engine only and you'll end up with a powerful, responsive drivetrain that's already proven for offroad use.
Author:  racemybuick [ Sat Apr 12, 2008 10:25 am ]
Post subject: 
I agree with Guy(Guru)48065... I think the snow-blower engines and such are great, torque hungy machines, but I dont think they were designed for abusive conditions that a buggy or atv can go through... Ride around 25 hp motors like John Deere or Craftsman Sears where you have the verticle shaft, have NO gearing for speed, and I think that is for a reason...

I had a 23hp kholer twin horizontal, and that thing was great.. Came off a exmark mower, was powerful and I seriously thought about putting it on a buggy like others have done on this site, but then I found out it takes a lot of work and design to make it work... I am actually making a 1 seater crossfire 150R, which will soon be a TRX-FIRE 300R. A TRX 300cc motor will be going in, and I may keep the shaft drive, depending on my welding skills and ebay auctions!!! lol.. But the motor cost 400 with almost everything but the carb and exhaust... That 23hp kholer I had, sold for 725 on ebay, with 1800 hours on it and a fresh rebuild... no clutch, no ignition... The TRX motor came with cdi, solenoid, coil, and is a 5 speed interal with reverse!

Check out ebay often. Look for wrecked ATV's, or atv engines like Polaris, Honda and such, and you can find a sweet powerplant to go with your project for pretty cheap!!

Just something to think about...


John :D
Author:  Newtoyerfn [ Sun Apr 13, 2008 1:16 am ]
Post subject: 
what about a snowmobile engine???
Author:  racemybuick [ Sun Apr 13, 2008 9:16 am ]
Post subject: 
Newtoyerfn wrote:
what about a snowmobile engine???


NOW UR TALKIN!!!!!!


I bought this just before I got my ATV engine, but then I figured the work needed to get this thng going would be easy, but I would have NO reverse, and still needed other parts to finish it, PLUS I needed to cool the thing. It wasnt a HUGE job, but I could get the same performance out of the TRX as I could this 2 stroker, but the TRX has reverse! lol...


I am still not sure this thing runs. It has spark, it has tons of compression, but I never got plugs or anything else for it...



John

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Author:  Newtoyerfn [ Sun Apr 13, 2008 6:04 pm ]
Post subject: 
how would you tie something like that to the sprocket???
Author:  racemybuick [ Sun Apr 13, 2008 9:59 pm ]
Post subject: 
THere is a clutch on the side of the motor... It is just like the CVT on our motors, only backwards! lol... Instead of a variator, the sled motors use a torque converter on the transmission end, and the clutch is bolted directly to the crank. SO... You use a belt to connect the motor (clutch) to the torque converter, which is locked onto a jack shaft. The jack shaft is a bar on bearings with a spricket on one end, and the torque converter on the other... The sprocket then has a chain to the rear axle.

That is the easiest way to do it, and probably common too. I was going to do it a little more difficult. I was going for a transmission out of a 350 Odyssey. It is a forward and reverse transmission, and the axle has no sprocket... It is 2 separate shafts that goe to the hubs to drive the rear... Then I could eliminate my swing arm, and have independent rear suspension! BUT, I quickly found my wallet is thin and the cost of those transmissions is fat.... PLUS, I would need the axles, hubs, bearings, carriers, brakes and so on... Like I said, the hard way...lol


John :D
Author:  Newtoyerfn [ Mon Apr 14, 2008 8:05 pm ]
Post subject: 
Is it possible to get reverse on a snowmobile engine?
Author:  vanet [ Tue Apr 15, 2008 11:31 am ]
Post subject: 
Many snowmobiles have reverse. On older two strokes they often do it by running the engine backwards which requires a starter that turns two different direction, but should come with the motor if you find one. Virtually any two stroke will run backwards, but getting it started backwards is the issue. Van
Author:  Newtoyerfn [ Tue Apr 15, 2008 3:37 pm ]
Post subject: 
ok, so what your saying is the engine has to be off reverse the polarity on the starter and it would start and i would have reverse on it???? I found a bunch of 2 strokes on ebay for cheap.
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