Is it just heat to worry about?
#2
Tech Regular
iTrader: (7)
Aside from the heat melting the epoxy holding the coils together or melting solder joints within the motor there's the problem of mechanical failure. From what I understand, a brushless motor's rotor can be spun at RPM rates so high that it will literally be torn apart by centrifugal force.
#3
The other is heat, high revs equals more friction equals more heat. So if you are going to over rev the motor, heat sinks and fans are a must. Again, this is dependent on how long you are running for, short speed run, heat is not such an issue, so ramp it up, but for a 10m main, heat is going to be a huge issue.
If you are unsure about what you are doing, use HobbyKing motors and see how far you can go before they self destruct, 30 buck motor being destroyed is much nicer than 180 buck tekin.
#4
The 2 main issues are the mechanical properties of the materials used to manufacture it, the higher the rpm the greater the stress on materials, however, motors are manufactured to higher tolerances than the companies claim, to make them more reliable, so, you can assume with little confidence say 25% over the high rpm mark of a motor.
The other is heat, high revs equals more friction equals more heat. So if you are going to over rev the motor, heat sinks and fans are a must. Again, this is dependent on how long you are running for, short speed run, heat is not such an issue, so ramp it up, but for a 10m main, heat is going to be a huge issue.
The other is heat, high revs equals more friction equals more heat. So if you are going to over rev the motor, heat sinks and fans are a must. Again, this is dependent on how long you are running for, short speed run, heat is not such an issue, so ramp it up, but for a 10m main, heat is going to be a huge issue.