Just wanted to know, I guess your MPH would be down, but by how much? My roommates and I were having an discussion over it.

 

I've tried it both ways, but I do know that you only do it with low HP vehicles. I guess it depends on what MPH the vehicle is running. I did it in my old station wagon to cut down on my 60 ft times.

 

about .1 and 1 mph. You can do it to help out on your reaction time. It will slow your 60', et, and mph. I used this technique when I run in a index bracket race that is on a pro tree. Being a 6 speed I would go in deep to cut the tree like the autos. Also it pulled .1 off my et so I could run in a lower index without having to hit the brakes so hard on top end.

 

Opps, I was thinking of staging shallow for my 60 ft

 

Actually, deep staging does a LOT to your ET's and barely anything to your mph.

What you do by deep staging is basically reducing the rollout. Less rollout gives you less starting speed when you cut the beams and start the clock.
For example, I run 13.32 with a full 12in. of rollout. With zero rollout (that would be a very deep stage) I run 13.78 with about 0.6 mph less.

 

I agree with .1 and .1mph. A 6 speed bracket racer.

 

I never claimed to be real smart...lol

 

There could very easily have been other factors involved in those runs, traction, weather changes etc. I agree though that otherwise an almost half second difference is too much.

 

Yep, 0.5 difference. Of yourse you cannot make a perfect zero rollout run on a dragstrip, but you can fiddle with a Gtech pro comp...