Why 65?

[Sedri]

My unfortunate problem, I guess is to just let go of what I've learned about nitro motors and accept that brushless power apparently has no relationship to the way a nitro produces power.

The words I'm hearing (i.e, reading here in the forum and elsewhere) is that a brushless motor would

1. be most efficient
2. put out the most power
3. AND give the longest run times

if it were both matched with a battery/voltage and gearing that let it turn between 30,000 - 35,000 rpms, under load, under "full throttle".

True?

So that means that a 7T 540XL (2144 kV) on 4S (16v) would in all applications be a better choice than a 6T 540Xl (2500 kV) on 4S simply because the 6T would operate over 40,000 rpms, while the 7T would operate below 40,000 rpms, even though the 7T would be geared higher (more strain on the motor) to give the same speed as the 6T?

I would almost be open to believing this (even though it feels contrary to common sense) simply because, when I ran my inferno with a 14T pinion, the motor ran hot, the battery and esc always ran cool. But, when I upped the gearing to 18T, the battery warmed up (a lot) and the controller heated up as well, but the motor seemed to cool off a little, even though the speed of the car jumped up by over ten miles an hour!

Yes, no, or just my imagination?

It's funny to think that undergearing/overrevving the brushless motor actually was harder on it than running taller gearing!!