alt Hacker NewsThat might be the easiest ebike retrofit/conversion I've ever seen. I have concerns about the grip in wet conditions but this looks like a great way to get that ebike I've wanted and not put my perfectly good frame to waste.
Replies
loeg • today at 2:11 AM
Get a Bafang kit or a hub motor replacement rear wheel instead. At least those systems work well.
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mongol • today at 2:09 AM
Have a look at Bafang or Tongsheng kits
Similar friction drives have existed for a while. The battery is very small compared to a regular ebike (typically they start at about 300wh.) Also, IIRC the friction drive is not very efficient.