Are electric motor fans really effective?
#2
are you talking about adding a heatsink and fan to the motor itself?
#3
Tech Regular
iTrader: (8)
"There's a big difference between using a fan to make a hot, overgeared setup barely usable, and using a fan to keep a cool, properly geared setup even cooler."
This does drop temps a bit:
http://monster.traxxas.com/showthrea...=castle+blower
This does drop temps a bit:
http://monster.traxxas.com/showthrea...=castle+blower
#6
Tech Elite
iTrader: (53)
if you need a motor fan your car isn't set up right its either over geared, the drivetrain is bound up, or you're running to many cells for that motor. Keep in mind just because a fan is cooling the motor can the rotor is still running way to hot and could still demag its self.
#8
ive noticed an average of 20 deg drop in temp with a heatsink and fan.
#9
Tech Addict
I have to agree with the other posts on here. Make sure your motor will live without the fan as it is just too easy for it to get damaged while racing. I run a Neu 1512 and with no fan it will hit 155F if I run it hard for 15+ minutes. That is safe but pretty hot. With a small 50mm pc northbridge fane just blowing past the end of the motor, it doe snot get over 130F. About 25 cooler because my body does not have much in the way of air flow openings. Just circulating air really helps.
The same rule should apply to the ESC. I am using just an original 1/10 Mamba Max and it has managed to finish a race with a dead fan without thermalling, but it is a bit close for my comfort. The heat sink temp hit nearly 180F, OUCH. The thermal shut down does not kick in till over 200, and since it does have a thermal shut, it is sorta safe, but also a lot of stress for no reason. Too bad I can't run dual fans in case one craps out again.
The same rule should apply to the ESC. I am using just an original 1/10 Mamba Max and it has managed to finish a race with a dead fan without thermalling, but it is a bit close for my comfort. The heat sink temp hit nearly 180F, OUCH. The thermal shut down does not kick in till over 200, and since it does have a thermal shut, it is sorta safe, but also a lot of stress for no reason. Too bad I can't run dual fans in case one craps out again.