My first v2 Dropped dead after about 4-5 hours of total track time. Maybe a bit more.
It just stopped. No smoke, no flames, no lights, no nothing. Just dead.
Config: Mugen MBX-5 Prospec, 1512/1.5/D/F, 11t pinion - 46t spur on 4s 25c 5000mah Polyquest.
Mods: Holes drilled in case at the caps, Fan wire shrink wrapped and rerouted.
Runtime: About 4-5 hours.
Driving Style: Drunken Barbarian with Terets and dirty contacts.
Other: Temps were fairly consistent around 145 degrees.
Number 2 v2 is still holding up. I moved it from my truggy over to the buggy so I could race it this past weekend. I put my old modded up MM back in the truggy. It ran pretty good too.