Re: Opinions on motorizing bikes to sell
I wouldn't build a single speed bike just because re-making it to have 2 really good brakes takes time & money that is greater than just starting with 2 good brakes (always nicer when you don't get sued for building something unsafe). Also for that extra labor reason, I only use new bikes.
For kits, I've been using sashawigs2009 on eBay who gives me a good deal on bulk orders & has nice kits. (did 10 last month & just got another 10 two days ago)
Sometimes I sets and thinks, sometimes I jes sets.