Howdy there. I'm looking to scratch-build a non-pedal EV, but I'm posting it here because I'm looking to use a Crystalite 5303 Racer hub on a 26" bike wheel for the drive system.
I've got a few questions about performance, but first I'll post my general design info to give ya'll a picture of what I'd like to be running.
First of all, the frame will be a home-made carbon fiber/foam/aluminum construction. There will be a swing arm rear suspension assembly made of carbon, but with lots of steel (I intend to build in some very strong mounting points for an overbuilt motor torque arm -- this will be rear wheel drive). The front fork will be a downhill racer type with in-fork suspension. The frame/body is to be of a feet-first/seated design and will feature aerodynamic fairings (fiberglass) to improve efficiency and improve the experience of riding in wet weather. I'd like to use 26" wheels front and rear.
A front disk brake is a must. :)
Estimated frame weight is around 20-30LBS with fairings, seat, etc. Total vehicle weight (with batteries and motor) is estimated at 80-100lbs. Rider is 210lbs, but is trying to reduce that to around 180. ;)
If I go through with this, it will be equipped with proper lighting and mirrors, then inspected by the State Patrol so I can register as a motorcycle.
1.) What top speed might I expect with a 72v system driven by two 37v 10AH LiPo packs in series? I'd like to keep up with 55-60MPH traffic for roughly 5-10 miles. My commute is on level ground with moderate winds.
2.) What would I be able to expect using 4x 25.9V packs in series? (Assuming I upgrade my controller to handle it.)
3.) Am I an idiot to even attempt this? Would I be better off using some other drive system?