What's my corrected ET?

B

Bandit

Forum Member
Since winter appears to have come early to MI, and it's questionable as to whether I'll get back to a strip before Spring - I'll pose this info and see what the resident experts think:

Last weekend I went to Stanton, MI's Motorplex. Great place, but WAY too much traction. I had to take the Viper's BFG DRs up to 42psi before they'd spin at all. Then, it was only for one revolution I think.. Incredible.

Anyway just a week earlier my car was running 12 teens at Lapeer with a nice launch with the DRs at 28spi-could've dropped them a little bit I suppose. Just enough spin to make for a good charge off of the line..

Back to Stanton's No Spin Zone..

First two runs, I get the hole shot with RTs better by .1 sec on run #1, then .15 sec on run #2 on the cars in the other lane, then procede to fall on face with a BOG each time as my DRs are sticking like glue and just not breaking loose at all.. Yet I stay 3/4 car ahead of the other cars in runs 1&2 all the way down.

Me running 12.23,12.24 (with the bog each time). Them running 11.721 and 11.745 respectively. Both other cars' imtermediate times are about .5sec better than mine at the measured intervals all the way down, as is their MPH. Yet I'm .5 sec behind ET-wise both times, hampered by the bog.

Yes, I did make a change from the previous week's no-bog 12.20/best 12.08 combination. A change that on a previous generation same model car (with less OE HP), gave me a .25sec drop in ET. So an improvement over the previous week is not without possibility..

I can't see any other answer to what my ET would have been w/o the bog,other than something very close to 11.7, if not better.
I whupped the other 2 cars with a .1 better RT, but I ET'd .5 slower due to the big f a t bog off the line.

Tell me it's true! My car's now running in the 11.7 range?

Go ahead. Make My Day :peelout:
 
wow i dont think i have ever heard of too much traction

baug=more RPM=better launch=kickass ET :icon_mrgr :icon_mrgr


Sounds like you have a potent car, i know the fear is somethimes there of breaking it as well, but a bad baug can mean as much as a half second depending on power and how well the car can recover from the baug.
 
I kept wondering if I was going which was going to happen first.. Break traction, or break a half shaft. I tried up to about 4500rpm on the start-still 100% traction. No slip, just a bog.

Need more than a 3.07 gear or more flywheel effect I guess.

The car got right back on its' feet after the bog, didn't even see my competitor, but it was more than just a few hundred rpm drop. The tires just wouldn't give.

Rolling through that little trickle of water under the timing building,.. tires spin a couple times with ease trying to clean them off, then on the third try...just a lunge forward, no more spin.. zero.

I knew I was in trouble.

..Lots of VHT 55gal drums at the far end of the pits.

BTW, rolling thru that little bit of water in the burnout area and seeing how easily those 'street legal' DRs spun has me glad I didn't go to the strip on them when rain was listed a possibilty. Their just like slicks with NO tread on water.
 
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Come on...some of you guys must be able to read something from these results.

Did my mod drop my car into the 11.7s ? Sure looks like it, but my opinion's biased.

Still hoping for one long Sat of T&T at Milan to confirm it and try a few more tricks.

:)
 
Youre ET is what it is. Correction factor is for altitude difference. Just because you beat the other car down the track doesnt mean you were faster than he was, just that you had a better reaction time. And you cant compare R/Ts from Lapeer to Stanton, the tracks arent set up the same way. If you need more help, you'll have to post all the info from you ET slip
 
Alrighty then, I'll just have to hope for one more shot before it's over for the winter.

I know what the correction factor is normally used for, just looking for some fun interpretation before I go back and get some no-excuse numbers.

Don't know how much the bogging hurt my ET each time, but in back to back runs there were two different cars turning 11.7 in the next lane that couldn't get by...

:)

- Just bench racing :peelout:
 
Bandit said:
Alrighty then, I'll just have to hope for one more shot before it's over for the winter.

I know what the correction factor is normally used for, just looking for some fun interpretation before I go back and get some no-excuse numbers.

Don't know how much the bogging hurt my ET each time, but in back to back runs there were two different cars turning 11.7 in the next lane that couldn't get by...

:)

- Just bench racing :peelout:
Click to expand...

Youd need to post the time slips info for both cars, for each run in question. Then we can get a better idea of what was happening. You could/should be soft in the first part of the track(bog), with a good top end charge, that combined with a hole shot wins a lot of races against faster cars. The other car is late by a tenth and a half, probably soft with the 60ft or 330ft, and never gets the chance to make the difference up. Or he just might not have a good top end. What kinda MPH?
 
Weeeell I went back to Lapeer last Sunday for a few runs.

After lowering my tire pressure to 20psi to accomodate the mid 50s temps, and the normal slippery track, I managed an 11.94 & 11.89 in the same trim I had at Stanton for a quick 11.92 average.

Which, when looking over the slips from Lapeer 2 weeks ago that average 12.15, is a .23 sec is a nice gain for a little bit of H pipe tubing added under the car. I could feel the added torque off the line as I tried to find traction.

Even though Lapeer had supposedly sprayed the track before racing began, I thought it was offering less bite than 2 weeks ago. (I'm NEVER happy with the traction am I ??)

I can see I'll need to invest in a line lock if I want to be able to rely on ...reliable traction (?)

Then, I added an OE airbox that'd had the factory rain dam removed along with some other inside improvements, and went [email protected]. .12 under the 11.92 average from above.

Looks like the engine wants more air than what the unmodified airbox was providing. I had a couple more things to try, but bracket racing was starting and going to shut the T&T down for an hour. So I packed it in, happy to have picked up .35 sec over my last trip to Lapeer.

Now if I could just see nice gains every time :)

:peelout:
 
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