Just in case you haven’t had a chance to binge-watch JohnnyNerdOut’s videos (here), you might have missed this one:
Where to buy e-bike Motors, Batteries and other components
He gives good advice on where to go to buy your e-bike motors, batteries, etc. I’m including his list below, because I think it’s a good place to start when looking for parts for your DIY project.
https://www.electrifybike.com/
I know that some think ‘if Amazon doesn’t sell it, then it’s not worth buying’. But in the case of e-bike kits, you’re better off buying for these other sellers. The prices won’t be significantly different, and you’ll probably get great support for the products they sell. That said, I bought parts from Amazon, eBay, AliExpress, and others for my e-bike builds with mixed results.
I also bought products from e-bike parts suppliers (not on this list) I thought I could trust but their support has been disappointing. From the list above, LunaCycle, ElectrifyBike, and JohnnyNerdOut are the three I’m familiar with and all have been excellent. In fact, I just went back to JohnnyNerdOut for my Lekkie Bling (Chain) Ring. His price was as good as any (not cheap), and I know he’ll deliver and back his products.
PS – If you’re just buying regular bicycle stuff – tools, pedals, cables, seats, handlebars, brakes and brake pads, that kind of stuff – then Amazon is still my go-to bicycle shop on the web. Or support your local bike shop. That works too!