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Old 04-15-2011, 08:31 PM
Clayton Clayton is offline
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Default Homemade clutch?

Does anybody know how or if it is possible to builb/make your own clutch?
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Old 04-15-2011, 09:05 PM
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There is the classic belt tensioner setup- 2 pulleys with a loose belt and a idler pulley mounted so it can swing and tension the belt when you want to go. This setup is only cheaper if you have some junk pulley laying around. You can get a nice max- torque centripetal clutch off ebay for $40 with a chain. A centripetal clutch is in my opinion the best CHEAP solution for a clutch.
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Old 04-15-2011, 09:07 PM
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This should help you out, this website is great an Ive purchased stuff from them before.

http://www.gokartsupply.com/clutches.htm
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Old 04-15-2011, 10:03 PM
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well, unless you have acess to milling machines and a lathe its not even worth it.

it would take ALOT of engineering and planning, and mostly testing too to get the right engagement settings and stuff.

good thing for you, they are already mass produced lol i bought a #40/41 clutch off ebay for $20.
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Old 04-15-2011, 10:41 PM
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There's belt tensioner clutches, as mentioned earlier. Simple, cheap and easy to make.

I once saw a centrifugal clutch made from a car brake drum, very clever, wasn't balanced very well though and weighed a ton.
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Old 04-16-2011, 01:22 PM
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I remember seeing an old picture online, probably of a 50s or 60s kart that had a round, car style CVT on it. I haven't been able to find it again though.
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Old 04-16-2011, 07:25 PM
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Okay, I think I'll jsut use the belt tensioner set up beause I have alot, and I mean alot of pulleys lying around. I just didn't want to bring the 7/8 shaft on my 3hp to 3/4.
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Old 04-21-2011, 11:28 AM
KILLDOZER KILLDOZER is offline
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I've got something experimental going on with a magnetic clutch used for driving a mower deck on lawn tractors.

You can follow that thread in this section and see if it works out. If it does, it will be an exceptionally powerful, nearly free clutch. I've got 3 of these things and haven't paid a dime for any of them
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Old 05-03-2011, 02:24 PM
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I need to make a clutch too, but the pulley tensioner at the top of the page won't work from cuz the engine I have(4.75 HP Power Washer Engine), the shaft that turns is facing downward and I cannot place the engine on it side with out it choking and other numerous problems such as the gas tank leaks if it is placed ion it's side, any suggestions?
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Old 05-03-2011, 03:49 PM
sexyvicta sexyvicta is offline
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Quote:
Originally Posted by SpeedDemon View Post
I need to make a clutch too, but the pulley tensioner at the top of the page won't work from cuz the engine I have(4.75 HP Power Washer Engine), the shaft that turns is facing downward and I cannot place the engine on it side with out it choking and other numerous problems such as the gas tank leaks if it is placed ion it's side, any suggestions?
you could use a worm gear...i have self drive lawnmowers with a tensioner belt system as described above which runs back to a gearbox. The belt runs onto a pully on top of the box which drives a worm gear inside which itself drives a normal gear on the drive axle.

You could find a gearbox off a ride on mower or something.
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Old 05-03-2011, 05:26 PM
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You need a twisted belt, worm gear, or Right Angle Gear Box, or RAGB. Use the search above to look for RAGB. This has been covered many times.
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Old 05-10-2011, 09:03 PM
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Do not use a worm gear box, if you do, you will not be able to coast after letting off the throttle. You can drive a spur gear with a worm gear, but you can not drive a worm with a spur. If you use a worm gear box, the minute you let off the throttle, your rear tires would lock up.

If you doubt this, and you have one of these boxes, just try turning the output shaft in an effort to watch the input shaft turn. You will find it locked solid, and you will not budge it an inch outside of any pre-existing free play present in the box.
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Old 05-10-2011, 09:38 PM
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On my belt tensioner, i run a mower tranny, so i have 5 speeds and reverse. Set it to neutral, get out and start the engine, jump back in and push the clutch that i also hooked up to the brake, shift into first, let go of brake/clutch.

Its slow enough to start from 5th gear, i just have to let go of the clutch slowly or else if i just take my foot right off, it puts so much load on the engine it almost dies.

Works pretty good. Ill post pics if youre interested but i have them in my thread. Find it searching through my threads.

Its a 6hp vertical shaft briggs mower engine and a 5 speed peerless/tecumseh transaxle.
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