manual clutch for kt100

G

graydog8josh

Member
I have been looking at finding the right clutch so i can run my kt100 engine on my bicycle. I found "downsbrosracing'' a mike downs designed a manual cone type clutch that looks like it would work in this application i even found the exploded diagram of it. but the website is down and the number to reach him, i cant reach him.
 

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My understanding is they only made 100 or so and then folded, but this is rumor.
I seriously doubt it would hold the kind of power the KT will produce anyway....
Never heard of a manual Kart racing clutch for these motors. You want a manual, you move up to shifterkarts.
The KT classes all use centrifugal as far as I know.
But good luck!
 
I had the same problem when I first tried to order too. I had to emailed them when I order mine. Have you tried to contact them via email to see if they still have any left.
 
Sure could, Barn and good question. A manual clutch is just an option that could be desirable for, as Josh said, bump or pedal starting. Also ya can rev the engine for quicker off the line, feathering/disengaging when under stress/relief of a hill, etc. Could ditch the pull starts altogether with a manual.

But is just an option and with every thing there are trade offs and compromises. A cent. clutch is still mass produced and available for very good reasons. And they are just plain easier.

Just my thunks on it.

I still want a manual though, lol.
 
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I've been waiting 30 years for a decent manual clutch for single shaft output engines.
Still waiting.
 
Same here, that's why I scooped up one of the clutches the brothers made when they first came out, just to have. I have a slew of Kart engines- KT's, Comers, HPVs, Maxter. Like Dan, I was thinking of bump starting for simplicity and ease of starting. All have taper shafts so the clutch would have to go on a Jackshaft. I do have a few 6.5 clones and a Briggs World Formula that have straight shafts that the clutch would go straight on.
 
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lots of motorcycles had small separate transmissions. Most harley's are still made like this but they're a bit beastly for a MB. I know BSA used a smaller aluminum trans, those are still probably quite heavy but they did make a lot of pre-unit 250cc and smaller bikes. There might be a suitable trans a motorcycle of that vintage.
 
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