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Originally Posted by Patrick
The loaded speed for a 7xl is 2145 I think, so 2145 x 16.5 = 35400rpm
The unloaded speed is 2382, so 2382 x 16.5 = 39300rpm
Hope this heatsink turns out well for you though. I've recently damged a second Quark with over heating problems. I use the heatsink from rc-monster, one 40mm fan, one 3'' fan and I don't think I was doing anything other the top with it setup wise, yet it still can't do a 5 minute race on 14 cells.
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Does this happen alot?? I was looking at a Quark and NEU motor combo but if it can't do 4S lipo's for more than 5 minutes I don't want to waste my money. will the Quark last the runtime of the batts in an E-maxx?