Good rule of thumb?

[suicideneil]

As a rule of thumb those guidelines are correct, but there are always exceptions top the rule:-

way over geared - hot everything
motor too small/ underpowered = will run hot regardless of gearing

etc etc. What motor & kv & voltage were you using?...

[thzero]

Mmms. Ok. Well, as far as the XXXT, its a 5700/MM running 30C 4000-4200MaH batteries 2S batteries (from variety of sources). I honestly don't remember what the original gear ratio was that I missed, but basically I scratched it went and figured out the overall ratio for the Firestorm Flux and then used the same overall ratio for the XXXT which resulted in a lower gear ratio. That dropped the temps on the motor to the acceptable range.

Originally Posted by suicideneil

As a rule of thumb those guidelines are correct, but there are always exceptions top the rule:-

way over geared - hot everything
motor too small/ underpowered = will run hot regardless of gearing

etc etc. What motor & kv & voltage were you using?...

[thzero]

Well I finally got batteries and all together and took the RC8T out for a run.

MMM/2200 using 50/16 gearing and 5S 5800MaH (Zippys). Motor was up to around 140 after some long high speed passes. Batteries were around 90. But the MMM fan came on.

Thoughts?

Originally Posted by suicideneil

As a rule of thumb those guidelines are correct, but there are always exceptions top the rule:-

way over geared - hot everything
motor too small/ underpowered = will run hot regardless of gearing

etc etc. What motor & kv & voltage were you using?...