I modded my stock controller on the xb-600 with the shunt mod. Works great. Thanks to all the help on this forum. I am doing 30 mph now with the additional battery under the seat. It is a 12v 12ah battery. I was thinking of replacing it with an 18ah since they have them here locally. Would I see a benefit in distance or speed by doing that?
My main question is Has anyone tried the 72volt controller that you can purchase on ebay? 1500w 72v for like $75.00 I like this option since I don't really want to put all new mosfets and caps in the stock controller. I thought I read that one of the members here tried it and it didn't work real well with the motor. I wonder why? If anyone has tried this please give me your thought.