8L Heat issues, suggestions?

[Rtsbasic]

Hi, I've got an 8L and Mtroniks Truck combo running in my Emaxx, and it runs nice and strong - geared 18/66, I'd estimate 35-40mph, closer to the 40 I reckon. But it has a heat problem. Its fine when the weather 35F but now its crept up to 55F upwards its coming off a run too hot for me to hold a finger on for even 2 secs.

It does this if I run in either 1st for a run, or 2nd for a run, even if I'm keeping to low speeds, like just doing a couple of small ramps on my garden. The tranny is stock except for a Robinson Racing slipper kit.

Does anyone have any suggestions on keeping the heat down? I tried gearing at 15/66 and it gets just as hot. My stock front and rear gearboxes seem to have a fair bit of resistance in them, is there a way to reduce that? I thought of putting a fan over the endbell, but its not going to cool the rotor too well is it. I also thought of getting a 7XL but I don't want to loose the top speed I'm getting now.

Cheers.