need help with finding a clutch

[HNDBH]

Hello

building a go kart, planning on using the duromax 18hp E , website says 3/8 shaft but cant seem to find a centrifugal clutch to go along with it. maybe i need a TC not sure, im new to all this. any help is appreciated.

 

[Denny]

I think the web site made a boo boo! 3/8” is way too small of a shaft size. You will need to use at least a 40 series CVT with that engine or better yet a 780.

 

[HNDBH]

yeah figured that it would be too small but wanted to relay what the website said. are TC compatible with live axle.?

 

[panchothedog]

Have never seen that engine up close, but I am almost certain that is a missprint. Most all big block engines ( and 18 hp is a big block ) have a
1" output shaft. 3/8" makes no sense. That is smaller than your little finger.
Wether or not you need a torque converter or a centrifugal clutch depends a
lot on the kart you build. Weight and tire size are two of the biggest factors.

 

[HNDBH]

Have never seen that engine up close, but I am almost certain that is a missprint. Most all big block engines ( and 18 hp is a big block ) have a
1" output shaft. 3/8" makes no sense. That is smaller than your little finger.
Wether or not you need a torque converter or a centrifugal clutch depends a
lot on the kart you build. Weight and tire size are two of the biggest factors.

weight including the driver and the cart? haven't chosen out wheels yet, just been trying to figure out the mechanical sense of it as far as the engine, steering, brakes. is there an advantage with TC over Centrifugal clutch or the other way around?

 

[Denny]

Off road, big tires, heavy=cvt
Paved roads, full throttle only, tiny tires, light kart=centrifugal clutch

 

[HNDBH]

ok, appreciate your guys' helps

 

[JimD]

Centrifugal clutch is pedal to the metal, avoid stop and go driving, you want full throttle for long periods to cool the clutch down. A centrifugal clutch is NO GOOD for a parade, too slow, too many stops and tire size is limited to a maximum of 13" diameter anything larger then look at a torque converter. Only exception is on a bike driving a single wheel then you can handle the larger tire as long as you have at least a 72 or larger rear sprocket in the #35 chain and a 12 tooth on the clutch.

 

[HNDBH]

Centrifugal clutch is pedal to the metal, avoid stop and go driving, you want full throttle for long periods to cool the clutch down. A centrifugal clutch is NO GOOD for a parade, too slow, too many stops and tire size is limited to a maximum of 13" diameter anything larger then look at a torque converter. Only exception is on a bike driving a single wheel then you can handle the larger tire as long as you have at least a 72 or larger rear sprocket in the #35 chain and a 12 tooth on the clutch.

ok i see, thank you.

 

[Master Hack]

3/8 (threaded) shaft? 3/8 x 24 female threaded shaft is not uncommon.