Motor and battery question
 

I have two questions..
1st... I have a BMI chassis and I can't seem to figure out how to keep the batteries in place... I've tried the orig strap , the blue alum and one that came with the bmi chassis... anyone else have this problem or know of a fix?

2nd. WHen I am dynoing motors what are the basics that I should be looking for in a motor.. what makes a stock motor better than or worse than another stock motor?
Is it volts, amps, rpms... a combo ????

Thanks

Ok ill try,

1-batteries/make sure the strap is flat,what I do is install battery and make sure its snug when strap is tight . If its not I shave 1 of the post where the screw goes in the mount ever so little to get the strap to be snug on the batteries.

2-Motors, I think you still have the Indi dyno so the best thing to look for is 9amps about 20,500 and Iff at around 20 and under at 4 volts.

Thanks John.. and I will grab those batts.. saturday.. cool?