 Re: Deacon's Bike
I have decided to dump the frame from the 3speed. It was a terrible idea from the start. But in my state of mind you have to try everything to learn.
I am beginning the search for the new bike. Here is the build plan in case anyone is interested. It might change as I go along
frame 24" or 26" inch step through.
front wheel stock 24" or 26" inch.
chain ring from the 27" three speed.
crank set from a twenty inch bike.
20" rear wheel.
300 watt brushed electric motor with friction drive.
batteries will be sla on a rack above the twenty inch wheel.
simple on off switch
The battery rack did not work on the 3speed because it was too high making the bike extremely top heavy. the custom rack I plan to build from pvc 3/4" pipe will be much lower over the 20" wheel and should give the bike good balance, as it will be below the heavies element of the bike ME
the down side to fiction drive is the bike has to run primarily on the batter power because of the drag from the engine. The human power comes into play on the hills. For that the larger chain ring and short throw pedals should work pretty well. The assist motor really ends the need for low gear ratios. The idea will be to give the most assist possible for as short a time as possible. Please point out any error in thinking here as it will save me having to rebuild if I am wrong. |