Hippie's GTP Project

[BrianG]

I ran my GTP the other day on 4s (set up for 10s, but the cells aren't in yet), and even though it wouldn't get fast enough to shift, it was really hard to keep from spinning those tires. Then, this evening (in between bouts of rain), I made up a quick-n-dirty harness to tie 4 2s packs together just to see. Well, I got it to shift all right, and what people say about on power shifting is correct; all 4 tires broke loose and started to fishtail. Was able to get it under control, but barely. Man, this thing was FAST (no GPS or radar to verify)!!! I'm sure the damp road conditions didn't help.

If you go with the 2 speed, make sure you have really sticky tires. It might help to keep the difference in ratio closer together so there isn't such a drastic change in rpm/torque when it shifts.