John in CR
100 TW
I finally got around to a top speed run with my Sachs MadAss 125cc conversion. Despite the overly heavy parts off of the MadAss, especially the entire front end, that put my total build weight at just over 100kg carrying only a 115V 26ah nominal battery, I was able to hit 182kph (113mph), improving my previous top speed of 172kph, making it as far as I know the fastest hubmotor powered street legal ebike in the world. Sure Rovii ran faster, but that was with a 1/4 specific build using a motor that weighed 3 times as much, which he burned up in less than 10km. My motor has been in service since 2012, and rarely gets above 70°C and never above 90°C, since I build for real world use and absolute reliability. I got pretty good quality video (front and rear views) of the run and also did a walk around clip, but I have to wait for my video editor to get back from the beach before I can upload them.
I quite pleased, since I hit the speed I expected after going from 30s to 31s and a slightly larger diameter tire on the motor. To get there I also bumped up the battery side current limit on the controllers and drew peak amps of 278A with a minimum voltage of about 115V for almost 32kw stuffed into the motor.
In the meantime, here's a pic I had in my computer that will have to do for now.
I quite pleased, since I hit the speed I expected after going from 30s to 31s and a slightly larger diameter tire on the motor. To get there I also bumped up the battery side current limit on the controllers and drew peak amps of 278A with a minimum voltage of about 115V for almost 32kw stuffed into the motor.
In the meantime, here's a pic I had in my computer that will have to do for now.