Originally Posted by
CarbonJoe
Turn on your car and yank the throttle until you meet the rules. However, at some ROAR races, they may DQ you if you are over voltage when you come to the tech table. What I suggest is to have your own volt meter, and "calibrate" it to what the official meter reads. For example, if the official meter reads your pack at 8.42 volts, but your meter reads 8.40 volts, you better make sure before you go to tech your meter reads 8.38 volts (0.02v "offset" from the official meter).
At this years Carpet Nats I was DQ'd for battery voltage. My own fault because I didn't check before my first qualifier... If you are using a voltmeter I would suggest using the meter that tech is using. As long as you check BEFORE you go through your formal tech inspection and your voltage is to high you can do what you need to get it down with as many checks that you need. In my experience free revving your motor does very little to drop voltage not to mention the possibilty of blowing a rotor up.