will 12c 150mah batteries burn out the mSR X motors?

[tchilds]

They are the eflite ones I bought at LHS for $5. I am curious if they will burn out the msr x motors as I already burned one out in less than 100 flights. I bought three replacements and need heatsinks and advice on the battery situation because I want to run all three motors in rotation.

[tchilds]

also looking for landing skid w/battery heatsink built in or something to that affect.

[tchilds]

oh and yes my 12c batteries make the msr x take off w/plenty of power and there is virtually no difference at first between the 25c and 12c but at half life you start to see the difference. no my batteries are not running hot.

[Wildflyer]

You will not burn out your motor. by using a larger mah rated battery, as long as the voltage is the same.
I use 160 mah Hyperion batteries in my MSR, I think they are 20c or 25c.
My MSR pulls 1.6 - 1.7 amps at hover, the 12c 120 mah batteries should only put out 1.44 amps, so they are under a little stress, but they don't seem to get warm.
I would not want to carry a heat sink, the MSR doesn't have a lot of excess lift.

The motors are a simple brushed motor, 100 flights is probably all they can handle before the brushes are gone.

I need to fly mine more, but every time it lands, my dog tries to eat it.

[tchilds]

My first motor had some wierd goo on the outside of the can. My second motor has outlasted the first but I do crash a lot less so it probably sees more consistent temps now than when it was constantly either launching or completely stopped over and over again.

The reason I asked about the motor burning out from lower 12c batteries (they are still 150mah) was just to make sure under driving this higher output motor doesn't damage it.

My mSR motor lasted since 2009... I guess they pushed this one too far in the mSR X. I expect the new mSR to last as long and be as durable as the original, so far no good. The frame for one is a much much weaker design. Still looking for alu heatsinks to add to the can if anyone can help please.