I'm currently out of the running due to a pretty bad inflammation (due to a combination of RSI and strained muscles from wakeboarding) in my right forearm.
I'll reply to the last posts since I'm allready typing this one (left handed), but don't expect too much posts and updates from me the next couple of weeks.
The motors run fine, don't get really hot and the speed is ok. The way I mounted them causes problems, the extended axles gets too much strain on them. Because I had to make new mounts anyway I also decided to go for stronger motors. Just can't mount them atm because of the problems with my arm.
The JRK's do a great job, have them runnin at 20A max atm and the heatsinks don't even get warm (with the new motors I'm planning on running them on 30A which should be no problem either) with the 120mm fan on them. Don't know the settings I'm using by hard, they are the ones motiondave advised me to use
@motiondave: Since I allready have the springs I'll keep using them, all in all it will still reduce the load on the motors.