Tranmission idea:

cloakedvillain

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The pedals are connected to a jackshaft via a freewheel while the engine outputs to the same jack shaft. This central shaft powers the rear wheel, allowing 2 cycle engines to freewheel and shift based upon the rear hub. It could clean up the look of a build if its got guards on all the chains. Can't use coasters though.
 

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The pedals are connected to a jackshaft via a freewheel while the engine outputs to the same jack shaft. This central shaft powers the rear wheel, allowing 2 cycle engines to freewheel and shift based upon the rear hub. It could clean up the look of a build if its got guards on all the chains. Can't use coasters though.
No offense, but your handwriting looks like mine 😂
 
No, the idea is to have a shaft that the engine and the pedals both output to, power the rear wheel.
If you're saying what I think you're saying a pedal system has an input-to-output range between 50-500%. For example, 500% means for one full turn of the crank the rear wheel turns 5 times. An engine input-to-output range is much lower. For example, every 16 engine rpm the rear wheel is only turning 1 time.
 
If you're saying what I think you're saying a pedal system has an input-to-output range between 50-500%. For example, 500% means for one full turn of the crank the rear wheel turns 5 times. An engine input-to-output range is much lower. For example, every 16 engine rpm the rear wheel is only turning 1 time.
This build has the exact idea i was thinking of. http://nwguy.fun/hpv/sgg/index.html
 

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