mamba motor shaft pinion size?

cool i'll have to give that a try too then, and ya that motor doesnt seem like a bad deal, thought i was looking @ the input and its starts at 11.1 to 14.8, so seems that the 3s will be a good match. and where did u get the 5mm connectors? the only sizes i found on tower was either the 3.5mm to 4mm