Z06Vette.com - Corvette Z06 Forum

george · 06-13-2002, 10:56 PM

How much faster on average will our type cars run the 1/4 mile if you compare a shallow stage to a deep stage in ET.(gain/loss) ???

Thanks

2002 Z my 6 · 06-13-2002, 11:21 PM

I've logged data during my passes at HRP. It amazed me when I found out that it took between .32-.4 seconds to go the first FOOT. I did a lot of research to verify that this is a reasonable number. The driver of this Eliminator class Duster found that his car took .32 seconds to cover the rollout distance for his car. http://www.staginglight.com/guide/react.html

As amazing as it seems, the ET difference from a extremely shallow stage to a extremely deep stage can be .3 second or more. If the front tire of the Z can generate 1' of rollout, the difference could be as much as .4 second. Needless to say, I stage as shallow as I can manage.

GroundFighter · 06-13-2002, 11:32 PM

Excellent study material, thanks for the link.

george · 06-14-2002, 07:39 AM

Z06:

Thanks for the link. Would staging deep also effect the mph?

Thanks again.

RandyN · 06-14-2002, 02:17 PM

Staging deep is what most people do. The ET is only effected when last beam is broken. It wouldn't matter if the staging beams were 10' apart. People stage deep so that they can get a rolling start(about 12"). That is why when staging deep you have to leave a little earlier. Re-read the web article a little closer, The Duster driver calculates his roll out to be incorporated into when to let the brake go so that he gets a good RT(which has nothing to do with ET(Unless bracket racing or running dial in). I do think that staging DEEP will give the car an advantage since it will have a rolling start when breaking the ET beam. Since the first 12" is the hardest to get going you can get by that before you start the ET clock. Run a test- stage as deep as possible and then as shallow as possible. Forget about RT. You will probably Red light when staging as shallow as possible.

Thanks
Randy

Another reason to be concerned with MPH. No tricks there! Just true HP.

PowerShifter · 06-15-2002, 11:38 AM

Randy, you have it backwards. A shalow stage is just barely turning on second stage light both lit.(more roll before out of beams on start) A deep stage is rolling forward till the top stage light is out and only the bottom remaines on. Get your imfo first hand it tends to sque when repeated. Ric

RandyN · 06-17-2002, 06:11 AM

Hey Ric,

We are on the same page. Around here we all refer to barely lighting the second beam as deep. Far back as possible. We call shallow staging as close as possible. Deep=far-shallow=close. Maybe we have the terminology backwords, however you phrase it. Boy, I bet the ones who didn't get could really be confused. To bad you don't live by me or vise verse. I would like to see you at the track. It would be nice to know someone with half a brain and a Z.

PowerShifter · 06-17-2002, 10:26 AM

Randy, FL has warm winters with are good, but flat boring scenery for the most part. If you go to tracks anywere in the country and write DEEP on your car, there expecting you to roll in and turn off the first bulb, but with auto start the final count down starts when all four bulbs are lit so doing what your competitor thinks your going to do isen't always best

Ric

Gordy M · 06-17-2002, 02:48 PM

If you run any record type drags and want the best ET's you would stage "Light" (just barely turning on the second stage light. If you are not cutting good lights (reaction time) then you would stage deep and stage until the top light turns off. Around here, you would write "DEEP" below your dial in time so the track lets you get positioned properly. When I was younger I could cut 0.520-0.530 lights pretty consistently. Now I have to stage deep to get those 0.520 lights.