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  1. i-Zapp

    planning a mid-drive Rockhopper ebike conversion, advice?

    Hi folks, weathers pretty sucky outside (snowing like crazy), so good time to get serious about my winter bike project. Here's the skinny - Specialized Rockhopper 29'er want middrive will use primarily for commuting to work 12 mi each way and just want to supplement my pedaling effort to...
  2. i-Zapp

    mid-drive free-wheeling cranks: need some undertanding...

    Was planning on building my own ground-up ebike this winter to keep busy and quickly realized there's ALOT of stuff out there ready to go! Spent considerable time watching videos and reading websites and still undecided about build vs buy, and still have a fundamental question... It seems that...
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