So I got the bike this week and by Thursday I realized I needed modz. So I'm going to build my own e-bike.
E bikes come down to 3 main components...motor, controller, and battery. Of course there is a lot more to it, but those are the biggies.
Motor: 36V 600W brushed standalone unit (not a hub motor) that I'll likely push to 1000W peak with higher amperage. I also got it with a reduction gear to about 500rpms so I can just weld a freewheel sprocket to it and not worry about gearing. In theory.
Controller: something from china. I dunno, it's literally all in chinese but I gathered that it's rated for 800W.
Battery: I have 30x 3000mAh 18650 cells on order (fun fact, these are what was in teslas until they got their own "pad" type unit). I have some flexibility here, I'm assembling my own battery pack...shooting for 3 parallel x 10 series which should give me something like 36V and a little over 10Ah. I've also got a comparable battery pcb that I'll have to figure out (to protect the lithium cells from over/under dis/charge thresholds).
My thinking is that I'll pack the batteries, controller, and charger in a backpack (with venting) and have a plug that can connect to the bike. That way, the only thing mounted on the bike is the motor itself. I can also protect the cell pack from the elemenys and charge it while at work. It'll also be super clean. Wires will go through the frame, and I'll be implementing a super simple/clean braking and throttle situation.
There is going to be some fab work involved with mounting and stuff too, which will be interesting to figure out but that's why I've got a welder.
Anyways this should be a fun project for rainy days. Lots of parts coming in today, picture of cheapo bike below (I still need to put my bullbars, levers, and seat and stuff on)
I see shit like this all over the city, mostly with delivery bikes. They zip around pretty damn fast.
