The new rumor floating around, is it true?

Brushless systems are happiest in the 140-160... Confirm/deny?
I thought it was the cooler the better/more efficient?

[reno911]

I have no clue, but to add to your first statement. I think you meant to say that the more efficient motors run cooler.

I can imagine there are certain temperatures that may allow current to move through something a bit better. Then again I am no electrician.

From a physics stand point, which I understand slightly better than electronics, I would say colder the better. The closer the molecules are together the less resistance. At least that makes some sense in my eyes.

[Bondonutz]

The first sentence;
Was the source of this info on the TRX forum ??
140-160 is a "safe" operating temp but may not be exactly ideal.

I've ben lead to believe that cooler is more efficent, heat is the enemy of anything electrical.

[whitrzac]

Originally Posted by Braden

Brushless systems are happiest in the 140-160... Confirm/deny?
I thought it was the cooler the better/more efficient?

yes they are happy, hot enough were your getting the most power you can get, while not causing permanent damage...

[Arct1k]

Absolute zero would be nice to reduce losses...

[suicideneil]

Lipos perform better when they are warmer, but I cant imagine the same is true of a normal circuit- cooler the better for the esc and motor surely?..

It wasnt the trx forum, it was actually someone very respectable in rc that races on a national level. However I always heard the cooler the better when it comes to planes, boats, cars, ect.

[Finnster]

Originally Posted by Braden

It wasnt the trx forum, it was actually someone very respectable in rc that races on a national level. However I always heard the cooler the better when it comes to planes, boats, cars, ect.

I think it would depend on the context of the statement. Perhaps its along the lines of what whitrzac said, that if its running very cool, you know you have some headroom to gear up, increase load and power output. Saying the "efficiency" of circuitry improves with temperature sounds like BS to me. If anything the inverse should be true

[simplechamp]

I always thought that heat = higher resistance in the windings = more power wasted. Isn't it a kind of cycle, like a certain motor is inefficient, so it produces more heat, the heat causes even more resistance, so it gets even hotter, and so on? I would imagine this happens to all motors to some degree, but certain designs are more efficient that others, reducing the overall effect.

I might take a hint from Arct1k and start dipping my motors in liquid nitrogen before each run.

[Finnster]

Originally Posted by simplechamp

I always thought that heat = higher resistance in the windings = more power wasted. Isn't it a kind of cycle, like a certain motor is inefficient, so it produces more heat, the heat causes even more resistance, so it gets even hotter, and so on? I would imagine this happens to all motors to some degree, but certain designs are more efficient that others, reducing the overall effect.

I might take a hint from Arct1k and start dipping my motors in liquid nitrogen before each run.

I dip mine in Bose-Einstein condensate. Massive power off the line, but I always end up crashing in the turns. :(

[simplechamp]

Originally Posted by Finnster

I dip mine in Bose-Einstein condensate

The fact that I laughed out loud at that probably explains why I'm still single