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mistercrash · 07.06.2010, 09:52 PM

I received my pinions from Mike last week. Thanks Mike. So I tried going up one tooth on the pinion. 54 spur and 24 pinion with Crime Fighters MT tires on MT wheels. I had my new heat sink on the motor and went out on 6S. Outside temp was 91 F with the sun shinning, with the humidex, it felt more like 105 F. It was really hot in my garage and the temp of the motor before starting was already at close to 100 degrees. I ran hard for 20 minutes, non stop. Climbing, jumping, speed runs on asphalt, grass and gravel, donuts. Had a few tumbles, broke a front suspension arm again and the doohicky in a rear CVD that you put the grub screw in to hold the pin.

Temps were:

Motor: 170
ESC: 140
Lipos: 145

front and rear diffs: 140
Center diff: 170 at the tranny casing. So the CD inside might have been close to 200.

The heat sink really helps but I think I need to go back to the 23 T pinion to bring the lipo temp down. The front tires were balloning like crazy so I will take out the CD as I suspect that when it gets too hot, too much power is wasted on the front wheels making the motor rev needlessly. This truck is so tough. My old E-Revo would have been in pieces if I subjected it to what I do to this XXL.

	(#295)
mistercrash Guelph, Canada, eh! Offline Posts: 1,083 Join Date: Sep 2007 Location: Guelph, Ontario, Canada	07.06.2010, 09:52 PM I received my pinions from Mike last week. Thanks Mike. So I tried going up one tooth on the pinion. 54 spur and 24 pinion with Crime Fighters MT tires on MT wheels. I had my new heat sink on the motor and went out on 6S. Outside temp was 91 F with the sun shinning, with the humidex, it felt more like 105 F. It was really hot in my garage and the temp of the motor before starting was already at close to 100 degrees. I ran hard for 20 minutes, non stop. Climbing, jumping, speed runs on asphalt, grass and gravel, donuts. Had a few tumbles, broke a front suspension arm again and the doohicky in a rear CVD that you put the grub screw in to hold the pin. Temps were: Motor: 170 ESC: 140 Lipos: 145 front and rear diffs: 140 Center diff: 170 at the tranny casing. So the CD inside might have been close to 200. The heat sink really helps but I think I need to go back to the 23 T pinion to bring the lipo temp down. The front tires were balloning like crazy so I will take out the CD as I suspect that when it gets too hot, too much power is wasted on the front wheels making the motor rev needlessly. This truck is so tough. My old E-Revo would have been in pieces if I subjected it to what I do to this XXL. No brain, no headaches.