[hayden55]

1. Nobody on here run 18650 cells? They are a lot cheaper for the Ah and weight that those prebuilt packs and you can make your pack any size you want. So my goal is high voltage and low weight for the pack. Each samsung 18650 cell is about 4.89 and 3500mAh and 3.6V nominal... 4.2V charged. (also 2.65V cut voltage for life cycle).

2. I'm going to be using dual motors because heat is more of a problem than weight (unfortunately). Splitting the required wattage between wheels reduces the required load to each motor and I will mount so heat sinks to each hub.

3. I had a 2009 Honda moped in 8th grade and it was 50cc and went 43 mph and it was street legal with no title and tags.

4. Yeah the suspension and tire/brakes is a big item besides the power handling. I rode a friends walmart bike that could go 28 mph with his e bike. Even with "suspension" it only had an inch of travel and was horrible. Hopefully one of my friends who works at a high end bike shop can help me out.

5. Lastly one of the more important one is a lot of these bike motor kits do not list their maximum rated rpms. Besides possibly burning a motor I don't want to also overspin it going down a hill.

6. I'm thinking an hour of maximum speed would be a good design to use for the pack. I'll have to look into power required to move a bike with speed bars to 40 mph. Also maybe want to look into efficiency of the speed control, friction of the wires, and efficiency of the motor. Also the packs have reserve capacity too so I'll have to factor over bc the bottom % is unusable.

I'm going to go back through these and tally it up I like that mid drive that was posted. That would fix the gearing and power issue. A 72v battery rated at 40A discharge would be fun.