Upper temp limit for brushed motor?
#1
Upper temp limit for brushed motor?
What is the recommended upper temperature limit for a brushed mod motor?
Thanks!
Thanks!
#2
Anything above 230ish is getting too hot for any electric motor. The cooler you can keep your motor the better and longer it will last.
#3
Tech Champion
iTrader: (17)
180 degrees is getting hot for a mod motor. It will start burning the copper windings on the armature. Also pull the brushes too, and if they look purple in color that is also an indicated that the motor is running to hot. Now if u pull the car and feel the motor and u can keep ur finger on the can then ur gearing is ok.
#4
Tech Regular
iTrader: (3)
180 degrees is getting hot for a mod motor. It will start burning the copper windings on the armature. Also pull the brushes too, and if they look purple in color that is also an indicated that the motor is running to hot. Now if u pull the car and feel the motor and u can keep ur finger on the can then ur gearing is ok.
#6
Do you mean 170 F or 170 C ?
#11
Is the can temp usually lower than the end bell temp? If so, perhaps that is why the solder can melt at the end bell while only measuring 230 F at the can.
From http://www.tpub.com/neets/book4/12n.htm
Melting Point of various electrical solders:
From http://www.tpub.com/neets/book4/12n.htm
Melting Point of various electrical solders:
#12
All good info, unless you're running a Reedy. Reedy motors have this propensity for running hot; my MVPs did a constant 170°F all the time, it's just the way they are. And from what I can tell so far, the new Stockstars and Challengers are the same way.
I've heard that the reason the magnets don't die from the heat is Reedy sources their magnets from a different place than Trinity, and these magnets have a higher tolerance to heat. Whether that's truly the case or not, I'm not positive. But I can say in the 6 or so years I ran MVPs up until now, I never junked one because the magnets went bad. I blew one armature up and had a magnet pop off the side of the can (my fault, skipped the chassis off a curb at the end of my driveway), otherwise I only replaced them when the commutator got too small for any more cuts on a lathe, and they didn't sell armatures separately.
I've heard that the reason the magnets don't die from the heat is Reedy sources their magnets from a different place than Trinity, and these magnets have a higher tolerance to heat. Whether that's truly the case or not, I'm not positive. But I can say in the 6 or so years I ran MVPs up until now, I never junked one because the magnets went bad. I blew one armature up and had a magnet pop off the side of the can (my fault, skipped the chassis off a curb at the end of my driveway), otherwise I only replaced them when the commutator got too small for any more cuts on a lathe, and they didn't sell armatures separately.
#15
I run all my motors at 150-160 just to be safe.