After this retrofit [kit] tests out - it will be made available to general public.Waiting!
Mine is a little way away yet, but need a bit of inspiration.
I too, have a new build underway. It's a Schwinn Stingray Limited Edition Web Chopper Bicycle, I have a new Pedalchopper Jackshaft / 3-speed - Transmission being built at Pedalchopper World in Ft. Myers Florida USA.Machining a mount and jackshaft to fit just behind seat post on little area behind seat post [lower frame] Already designed - it will fit nicely.... very clean simple mount mirroring our new machined motor mount design... - no tensionersneeded!
Drive chain to gear left side... left side drive Gear to shaft then crossover to right side drive gear connected to rear sprocket - right side [3 speed hub] ... Freewheel on right side / outer shaft connected to crank - it will be impressive.