Hi,
I bought a 17T pinion for my Hyper Mini ST and fitted it, now when I'm running I bring it in for some checks...
I brought it to me after a few full throttle runs about 50 meters both ways, so i took the shell off and immediately
i was hit by a gust of hot air, the motor was so hot i couldn't touch it, the esc was warm and so was the lipo..
The motor did get rather hot on the old pinion 12T (was way under geared, hence the new 17T pinion)
The esc never got even slightly warm and neither did the lipo. The motor (4000KV BlacKMantis (from GiantCod) has a constant draw of around 74A-76A I think, The lipos are rated 2S 20c x 5000mah = 100A ... the esc is a HobbyKing 120A esc...
So i don't see why it is over heating everything?
It was well under geared and it is now geared properly, I will be ordering a motor heatsink and fan tonight, it's just the lipo's i dont want to over heat as they are the only lipos I have until i get my 3S 60-130c 5000mah...
Any help is appreciated!
http://www.modelsport.co.uk/ansmann-racing-540-motor-heatsink-with-twin-fans/rc-car-products/39487 < Heatsink and fan!