pendragon8000
100 kW
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 specs
http://www.mtbr.com/cat/bikes/29er-fullsuspension/scott/spark-29-comp/prd_486147_7787crx.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=ZD0353
http://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/ht35
http://www.crystalyte.com/Crystalyte%20HS_HT35%20rear%20motor%20drawing.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/Models.aspx?ModelID=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.
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 specs
http://www.mtbr.com/cat/bikes/29er-fullsuspension/scott/spark-29-comp/prd_486147_7787crx.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=ZD0353
http://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/ht35
http://www.crystalyte.com/Crystalyte%20HS_HT35%20rear%20motor%20drawing.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/Models.aspx?ModelID=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.