Today I drove with my new Speedpassion reventon Pro and 4.5 MMM setup for the first time. I'm very impressed with the system.
The problem I had was that the car at the end of a run (around the 5 minute mark) suddenly slowed down to what seemed to me a protected speed. Like half the speed of a 21.5 but would still work.
The temperatures did not seem outrageous to me. Motor was 110F and the speedo around 140F. Did the speedo go in thermal protection, or does it shut itself off in that case? What else does it sound like? A lipo issue? The next heat after a charge everything seemed to work fine again for the first 5 mins, but same thing happened again.