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Hi guys, Past few months been working on a successor to my (stolen) bench grinder based e-bike. A 600w juicer motor running a chainset at about half power to a modified giant castor, which in turn drives a bin lid cable-tied to the wheel. The idea is the unit hinges up and down to automatically...

Thanks guys :) The above pics were when it was geared 1:1. Nominal speed was 10.8mph and was fine for assistance on flat/very mild slopes. Since then, I've geared it down to the middle cog (3:4) making it more of a hill climber at 7.8mph. I'm now wondering if I should've got a bigger battery...

Mr Tea? And a real man uses blunt blades on his Dick Strawbridge-esque beard :p The biggest challenge was working out how to attach the freewheel to the grinder's drive shaft. In the end, a small Allen key through a drilled hole in the drive shaft and a groove cut into a freewheel remover...

Haha, I've probably added about 9-10 kilos but now got it to the point where it's better to have it than not..... And weirdly the most noise comes from the chain as it runs through the guides fashioned out of an old oven grill. It works though so daren't make any attempts at refining it and you...

A side effect of trying to shelter the leccy bits from the Yorkshire Pennine weather

Hello, I'm new here & Yep! I've used a £30 bench grinder from Lidl to turn my ten-year-old hybrid bike into an electric bike! 250w, replaced the grinding stone(s) with a reversed free-wheel running via chain to the large sprocket (gear 1, which I've seldom used). Power is derived from a 12v...