CVT would work. Lots of jury rigging but would be way cool inframe. Rag joint would be simple. Sky and imagination are the only limits. Wish I knew where to get belt drive parts. I would build with em! Also Firebelly and SBPs is working on a gearbox for 4 smokers. (I am as well but is far from in production)

The big problem is the wide cranks allow 9" Stock peddles are 5" The Honda GX50 with a Grubee GB will fit. (I don't enjoy the width but love that engine!)

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Work like you don't need the money, Dance like no one is watching and Love like you've never been hurt

I want 2 ride my bicycle