Join Date: Jun 2000
Location: Baytown, TX USA
Which kind of racing are you doing that you need the reaction time on? Bracket, index, or heads up?
In index and heads up racing, usually delay boxes are not allowed. A delay box is something you pre-program after practicing with it. You can program in a delay so that when you see the first yellow bulb on the sportsman tree come down, you can let off the t-brake button then and the car won't launch until the 3rd yellow, or whenever you set the timer to do.
There is some new technology out regarding some photo-sensitive equipment that you can wire into your brake that will release the brake when it senses the yellow lights to come on. Not sure of its legality at this point though.
As far as reaction times and sixty foot/ET are concerned, your reaction time has zero to do with the ET and sixty foot. The only thing that affects those when shooting for a better reaction is how deep you stage the car. Example if you roll in deeper to get your rear tire further into and quicker out of the beams, then your sixty foot and ET are going to suffer. Reason being is that you're getting less of a rolling start at the sixty foot markers and the end of the track. Yes even 4-8" can affect these numbers. If you roll in deep and turn off the top stage bulb, you will lose .1 in sixty foot and ET. I used to do it all the time.
If you are index racing and running in the slower classes with a car that doesn't quite react as fast as a 700+ horsepower car with big tires, then you can put on smaller front tires to help out the reaction time. Basically it reduces the rollout to clear the beams. Smaller tires will also show a slightly worse sixty foot and ET.
Carl S.: 417", Yates C3s, Edelbrock 2828, Dominator, Powerglide, 4.10s, 3100 lbs raceweight. 1.27 60' [email protected]
nitrous on 275/60 Mickeys in Ultra trim
2014 Ruby Red GT Auto, bone stock for now