I have been thinking about this build for a very long time. Those of you who know me know I tend toward extremely powerful bike with long range. These two traits dictate high weight and relatively bulky shape and size, even with the use of Lipo cells. However, this build is focussed in a different direction.
I decided to pull the trigger on this build at this time because I made room in the stable by selling the Motoped. I also realized I have a motor, drive unit parts, a controller, lipo packs, and misc odds and ends lying around. What I am missing are brakes, forks, and a frame. At least I WAS missing a frame until now......
This is a frame I have lusted after for a long time. I remember when this bike was released in 92. I was transfixed by it. Since then I have always wanted one. A few years ago I bought a Mountaincycle Tremor frame and loved it (my son has it now). The San Andreas frame has begun going up in value recently. So, I figured if I want one, I better get it now before the prices go up even higher. I looked for a frame that was heavily used (I did not want to alter a perfect frame), yet still looked good. This one seemed to fit the bill. I also wanted to find a bare aluminum frame. This way I could weld to the frame without having to have it bead blasted first. Oh, this bike will remaind bare aluminum, at least for the forseeable future. This is for looks and so I can weld to the frame at any time.
Here is the proposed system;
---3 turn Wye 3220. This is a motor I have here at the shop that I may use. I also have a 6 wire, 6 turn 3220 I could setup with Delta-Wye switching. Last choice would be a high RPM (probably 3 turn) 3215. This option would be chosen to save weight, add performance through running extremely high RPM, and to reduce the Q-factor (width of the drive). However, I do not own the 3215. So, that is alot of money to part with that is not needed considering the fact that I already have a coupld 3220s here.
---Edge 160 controller setup to run 280 amps peak.
---DaVinci Drive reduction unit in black (the last one I have here in stock)
---Four Nano-Tech 8ah 6s packs for a 12S, 16ah pack. That will give me over 500 wh to work with. That should be good for 20 miles of street cruising, or 45 to 60 minutes of trail riding. I have these packs in stock. So, I want to go with them. They are perfect for this build.
---The packs will be mounted in an aluminum box welded into the center of the main frame spar. I will cut the spar in the center to make room for the battery box and TIG weld the box in place.
This bike is being built to be light. With this pack, I hope to keep the all-up weight below 50 pounds. My goal would be 45 pounds, but that may be unrealistic.
I want to use single crown forks with midest travel (this frame only has 4 inches of rear travel anyway). This bike is being built as a fun trail bike with light free-riding potential, not a full fledged dirtbike like the Motoped. That thing was scary powerful and weighed in at 147 pounds. 50 pounds and half the power is still more power per pound of bike. So, light though this bike will be, it will still be VERY powerful for its weight.
I am open to suggestions for forks and wheels. IK am leaning toward Crank Brothers Cobalt wheels. I have a set on my pedal only bike and love them. They are expensive, though.
Oh, I am trying to stay at a more reasonable budget for this bike too. I want to used as many used parts as I can to keep the cost within the stratusphere for a change.
Excuse the poor quality pictures. I will take better pics when I get my other camera here at the house.
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?