Bogging out of the hole

[Mr. Luos]

I know this is actually worse than spinning.
I know that is can have a decent effect on ET's.


But how much can it affect trap speed? Loss of momentum has to kill it.

[BLKCLOUD]

Just like spinning, you can't quantify it. Depending upon how bad you bog on run x, and how bad you spun on run y, either run could be better (or worse) than the other.

The good news is that bogging is generally easier to fix than spinning: Launch higher.

[Mr. Luos]

I know what I need to fix it.
Just wondering how it affects time. Makes sense, the worse it is, the worse the affect.

My car has pulled a few 1.67 short times, but it bogs. So far my best ET was on a run that had a 1.81 short time but didn't bog.

[BLKCLOUD]

Was it the same day at the same track? It would be interesting to do a side-by-side comparison of the timeslips (all the incrementals) if you have them.

One bad thing about your T56 is the 2.66 1st gear. Makes the launch difficult.

Good luck.

[Mr. Luos]

They were.
I will have to get the slips out though.
Give me some time.

[joerockhead]

Well, I would have to say, it is better to spin then to Bog.

If you spin, you still have all that energy and torque going forward, you just have to get it to catch.

If you Bog, you have lost forward momentum, and have to get the power curves back up, which does take longer.

Your 60's are nice to have, but that will not win you a race, as you already know.

I have done both so much, and finding that perfect RPM to launch at is hard as hell.

Hell you have seen me run, and the pic on my Webpage with me nearly having that wheely was my best launch that I can recall
For those that have not seen it - http://www.badass67.com

Make sure to have a not ad at our track day this spring, and adjust by 100 or 200 RPM per launch, until you find that neck snapper.

SpEd

[Mr. Luos]

Looking forward to it.


Here are the runs...
Sept. 27th
1st pass. (went to 1/2 throttle in 4th gear after I got a little loose up top)
60 = 1.904
330 = 5.288
1/8 = 8.014
MPH = 90.96
1/4 = 12.368
MPH = 114.39

2nd pass
60 = 1.810
330 = 5.028
1/8 = 7.711
MPH = 90.76
1/4 = 11.975
MPH = 117.59

3rd pass (bog)
60 = 1.773
330 = 5.101
1/8 = 7.802
MPH = 89.89
1/4 = 12.065
MPH = 117.82


Oct. 11th
3rd run (First two weren't great, getting used to track) (bog)
60 = 1.674
330 = 5.005
1/8 = 7.738
MPH = 89.28
1/4 = 12.061
MPH = 116.14

4th pass (bog)
60 = 1.688
330 = 5.017
1/8 = 7.736
MPH = 92.18
1/4 = 12.065
MPH = 116.59

5th pass (another bog)
60 = 1.696
330 = 4.991
1/8 = 7.709
MPH = 89.78
1/4 = 12.010
MPH = 116.72

6th pass
60 = 1.741
330 = 5.100
1/8 = 7.828
MPH = 89.53
1/4 = 12.134
MPH = 116.86

[mrr23]

2nd pass
60 = 1.810
330 = 5.028
1/8 = 7.711
MPH = 90.76
1/4 = 11.975
MPH = 117.59

3rd pass (bog)
60 = 1.773
330 = 5.101
1/8 = 7.802
MPH = 89.89
1/4 = 12.065
MPH = 117.82

looking at these two, i don't see the bog as the problem as it would've affected your 60ft negatively. looks to me more like a 1-2 shift issue. maybe because of the 'bog' you short shifted.

[Mr. Luos]

I would have to watch the video...But I know the top run of those two didn't bog, and I am thinking the bog on that last one was very minimal.