I am about to build my first EV after decades of dreaming about it. My old friend Sam aka Rarefaction and I were going to build a starter motor go-kart when we were 12 y.o., but we didnt have the skills back then to put it all together. After a few years of discussion with him and considering possibilites, also talking to my friend Ryan aka Scope about ideas from his motorcycle raceing and mechanics experiance, I decided to go with the high powered rear hub motor.
Unsprung weight is an obvious concern, but the crystalyte seems to handle this quite well.
I chose the scott spark because it was :
- under $2k (new)
- large space in frame for batteries and controller
- 29 inch rims
- dual suspension
- built strong for XC / light DH
here is a review with pic and specshttp://www.mtbr.com/cat/bikes/29er-full ... 87crx.aspx
I am going to use 2 of 3x2w led down light in a small case for head light, and 2 automotive 12v red led 'bulbs' for rear.http://www.jaycar.com.au/productView.asp?ID=ZD0353http://www.jaycar.com.au/productView.asp?ID=ZD0365
I am considering putting a small car horn in the battery box, and powering horn and lights with a 3s lipo instead of using a dc - dc converter (simalar price, more range and will work when main pack is low). I was going to use aluminium for the case but after falling off my bike jumping a table top, i considered the weight and sharp edge could open me up. so i was looking at rectangular pvc, should be easy to work with and hopefully come up nice with a satin charcol grey paint.
how easy it can happen... (skip to 1:30)http://www.youtube.com/watch?v=xWWko548Qfo
A nice pdf of the crystalyte hs/ht35http://www.crystalyte.com/Crystalyte%20 ... rawing.pdf
as you can see there is 30mm of axle for dropout,torque arm and nut. therefore 2 x 10mm torque arms should fit nicely between the dropout and nut. I intend on making theese from 10mm generic steel stock. cut the shape with angle grinder and cut the axle whole into the side, then weld a piece on to make the other side. (sorry if thats confusing ill do photos). this way i can make the arms really tuff and custom shape to my bike.
Currently i have the bike, im waiting for electronics and i still have to order the following:
Helmet upgrade - http://www.chainreactioncycles.com/Mode ... elID=69808
lights from jaycar
battery from hobby king
maybe some DH protective stuff, jacket and knee pads.
Please comment and give advice, I have good electronics experiance and moderate bike experiance, but some of this is new to me.