another thought from the bedroom

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Again reaching for sleep I thought of a way to use a 3 speed rear wheel tranny and be able to peddle. I have an Alanax treadle powered bicycle that has a rear hub with a free-wheeling sprocket on each side. If I spoke it to a 2-1/4 X 26" rim, I can put an engine final sprocket on the left and the peddle chain on the right sprocket. Then a Sturmey-Archer 3-speed tranny as a jackshaft mounted in a yoke fastened to the seat tube with one spoke flange machined off to allow pop-riveting a motor pulley to the backside of the opposite flange. Consider, the hub is driven by the pulley and therefore the sprocket is driving on the left side I already have one that is set up like that but it drives a 2nd jackshaft and there are no peddles to keep it legal. The rear brake would be rim clincher. This system requires a rope starter. I have a choice of a 4 HP lawnboy 2-stroke or a 5-1/2 HP HFT 4-stroke.