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Gustav · 06:50 PM

undergeared would be hot motor,cooler esc and batteries.

It could be a tad overgeared for general driving,maybe drop to a 20/66 but your main problem is the grass.Try it again with a low rolling resistance (gravel or tarmac)and the temps and amp draw will be dramatically lower.Run a much lower gear on grass.

Edit;does the esc get plenty of air cooling? it will have plenty of heat to dissipate at 115A/14.8v.

Another edit;just a thought but the switching frequency affects the controller efficiency and schulze recommend 9 KHz part load switching frequency for lehner/hacker motors above 8 turns and 19kHz below 8 turns.the quark is fixed at 38kHZ according to the specs.I hope that's nothing to do with the heat.

	(#3)
Gustav RC-Monster Aluminum Offline Posts: 916 Join Date: Jul 2005 Location: UK	06.09.2006, 06:18 PM undergeared would be hot motor,cooler esc and batteries. It could be a tad overgeared for general driving,maybe drop to a 20/66 but your main problem is the grass.Try it again with a low rolling resistance (gravel or tarmac)and the temps and amp draw will be dramatically lower.Run a much lower gear on grass. Edit;does the esc get plenty of air cooling? it will have plenty of heat to dissipate at 115A/14.8v. Another edit;just a thought but the switching frequency affects the controller efficiency and schulze recommend 9 KHz part load switching frequency for lehner/hacker motors above 8 turns and 19kHz below 8 turns.the quark is fixed at 38kHZ according to the specs.I hope that's nothing to do with the heat. Last edited by Gustav; 06.09.2006 at 06:50 PM.