Any one got na idea for an simple automatic gear for a scuter tipe of bike ?

[Edited on 27/7/06 by Kamikza]

The old Honda C50/70/90 had an automatic clutch. Failing that, the Honda 250 & 400 Superdream had an automatic gearbox.

Any help?

My Superdream didn't have anything automatic about it, it even had a kick start. Have a look at chainsaw centrifugal clutch which throws out with revs like a scooter clutch.

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Originally posted by Peteff
My Superdream didn't have anything automatic about it

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Look at Piaggio, honda, Yamaha and Peugeot. They all make automatic transmissions for scooters. Some with 600cc engines.

I whas thinking some thing like a 400 ccm diesel and belt trasnsmision .look the image kiss principle .?
Rescued attachment mini-bike-transmission-700.jpg

Hmm that looks ok for a go-kart but too agricultural for anything serious. What are you bulding Kamikza? A 'scooter type bike' would need something very compact.

[Edited on 28-7-06 by RazMan]

Why compact i was tinking of runing it on a 400 ccm Diesel

Looking at your other thread it looks like you are building a trike which means you might get a little more room - but that transmission outlined in the drawing is agricultural to say the least! I hope you are not intending to travel at more than 20mph with all those cogs & belts spinning around a few inches under your ar$e!

Tecumseh/Comet do a torque converter for this application.