Eliminating the driven sprocket

I admit I'm no expert but why couldn't one simply throttle down when shifting ? Throttling down would reduce the torque. I must be missing something.

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derailer in the spokes on standard bicycle is usually caused when chain gets caught up and pressure on peddals pulls derailer into wheel. would usually be in top gear, closest to spokes. a cause of failure with motorized set up as i could see is such high revolutions of chain could make it hard for jocky wheels in derailer to keep up, any drag or friction would again pull derailer to its doom in a mess of broken spokes. maybe if this high revolution aspect was avoided by adjusting riding style, ie avoiding reving the guts out in low gears, problems may be avoided? shimano make a cheeper rear derailer with extra large jocky wheels this could help?

Well heres a picture of a schwinn that Im waiting on that has the front freewheeling crank and fixed rear. I'm in one way or another here to try this.
I'll get better picture when the bike comes.

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Well here is the schwinn with the freewheel front crank. Just slapped it together to look it over. Looks like it would be a good choice for the jackshaft conversion...boy if I just had the layout for those side plates..lol Oh well Ghost0 I have to build it have like you and other wanted to do this but I never know of the cranks so now I have the missing link. When I get a chance I'll pull the crank or if you want anything measurement etc etc just let me know. As soon as I pull the crank and see if it will fit any of my other bikes then I'll have to go get the other 4 cranks.

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Rumor has it that "ThatsDax is rushing a transmission to market" first one wins the market.

If that's true we will have to see how close it resembles ours.

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http://oilslubesfilters.com/ AND NOW http://www.sickbikeparts.com/

This looks like it could work with a standard jackshaft. It has two chainrings, one for the motor and one for pedals.

Schwinn FFS Front Freewheel Chainrings Set NOS Shimano - eBay (item 360019097754 end time Mar-30-08 21:33:47 PDT)

You beat me to it. I was wondering how to freewheel the sprocket. There is some controversy as to whether the derailleur can handle the load, if the rear freewheel fails it would not be fun. I think they make a heavy duty rear cluster. I think you need to check the gear ratio, triple reduction, it just looks like it will have a low gear all around, I could be wrong. I would like to see a small two speed, I was thinking of using some gears from a small Honda the only thing is gears will make the engine have to reverse rotation, a two speed would be easy. A two stroke will run in both directions, years ago my Bultaco at a signal acted funny and when I went to go it only had 4 gears in reverse, it hiccuped and was running backwards. Have fun, Dave

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Chuck - The monkey has the spark plug again!

It may be yours but without a patent, anyone can copy and market it. I hope you beat the competition.

Thatsdax said he has one on his site.....but heck if I can find it.

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http://oilslubesfilters.com/ AND NOW http://www.sickbikeparts.com/