Hi neweuser,

Copper is a better heatsink material than aluminium. Only problem is that it is much hearvier. I agree that I should flip the esc & attach the heatsink to the aluminium portion of the esc. Just a little lazy to do that at the moment.:D

Regards,
Joe Ling

You used copper heatsinks, which you are right does transfer heat better, but on plastic? Plastic is an insulator IIRC. I'm surprised the heatsink, copper or otherwise, made any difference at all. I suspect the biggest difference came with using that fan. If you flip the ESC and install those copper buggers on the aluminum case, I bet you won't even need the fan as long as there is adequate airflow for the heatsinks to work. I only used aluminum because I already had it on hand and copper tends to tarnish easier reducing its effectiveness.

I've been eyeing that eagletree unit for some time now. Sounds like it works very well. Handy to have around.

Hi BrianG,

In the previous run, the temp. reading on the plastic side of the esc was in excess of 80Deg C, that was the reason why I installed the copper sink on the plastic. The biggest problem is that I am too lazy to flip the esc, desolder the wires etc. Consolation is that I have another Quark which I have already flipped ready for the coppersink treatment. I'm just waiting for my tube of thermal adhesive on the way from the land downunder.

In all honesty, I did'nt think the fan or the sink would help much. So, I was pleasantly surprised to be wrong. Having said that, the test was halted prematurely (I've only managed to suck 1330mah from the battery) because the spur was too damaged for me to continue the torture of the esc.

The eagletree unit has proven to be simple to use & quite useful. I have yet to install the temp. sensor for the motor. Only downside is that it cannot transmit info direct to my radio.

Regards,
Joe Ling