i ran 2 packs yesterday at a very cool track, i have to say i like this motor on 5s very much, i turned down the throttle end point to 100% instead of 125% and it had plenty of speed and punch, i had ok temps after like 20 min of running

battery-120*
esc-120*
motor-170*
outside temp-70*


heres the track, just scroll down a little

http://mnnitroseries.com/modules.php...r=asc&start=60