[suicideneil]

9XL is fine for 12 cells, but ideally you wouod be running lipo or A123 cells in something that large- nimh is fine for lighter vehicles, but heavier stuff puts much more strain on the electronics. I would be suprised if you managed anything over 30-35mph, regardless of motor choice, since the lower kv motors are less demanding of the batts, but need more voltage, and the higher kv motors will spin faster, but suck the life out of your batts....

Treat the bidproduct motors like feigaos though, they are very similar in the end.