quote:

Originally posted by Lenny5160:
I look at an awful lot of run data, and I can’t recall seeing anyone’s car repeat 60’ times on the stop like I’d expect them to wide open.

quote:

Originally posted by 1320racer:

quote:

Originally posted by Lenny5160:
I look at an awful lot of run data, and I can’t recall seeing anyone’s car repeat 60’ times on the stop like I’d expect them to wide open.

So Tony, the fact that my dragster ran 1.693, 1.694 and 1.697 in rounds 4, 5 and 6 at Epping last year and the fact that my dragster ran 1.689, 1.695 and 1.695 in rounds 4, 5 and 6 at the MG national event last year and the fact that my dragster ran 1.650, 1.661 , 1.656, 1.658 and 1.660 in rounds 1, 2, 3, 4 and 5 at Virginia last year....

tells me you need to look at better data from better cars and you have work to do.

quote:

Originally posted by 1320racer:
I don't. All our runs are logged and pertinent info is written on the time slips...weather, TS timer, delay box setting and competitor at a minimum.

Further, my racepak and ifamily software files are downloaded onto a flash drive after every race and I have a back up computer.

quote:

Originally posted by Lenny5160:

I never said strings don’t happen

quote:

Originally posted by Lenny5160:

I look at an awful lot of run data, and I can’t recall seeing anyone’s car repeat 60’ times on the stop like I’d expect them to wide open.

quote:

Originally posted by 1320racer:
no formula necessary unless you call simple addition and subtraction a formula. All the info you need is on the time slip.

quote:

Originally posted by ski_dwn_it:
So with the software out there and other methods I am one that always double checks things multiple ways....

I use Ifamily SW, but also do it manually especially because I am usually double entered and have run back to back to compare to..

What are your methods formulas/methods for run completion that people employ?

For me I use the known slip vs unknown as follows:

find the difference in:

TT1                 vs             Elimination run 1 with drop @ finish
 60 ft 1.245 known slip           1.250 unknown slip .005      
330 ft 3.777  known slip          3.775 unknown slip   -.002    Inverval change -.007       
660 ft  5.750  known slip         XXX unknown slip   

XXX = 5.750 + (-.007) + (-.002) = 5.741  

Feel free to post the 1/4 mile completions too....

This should be interesting..

quote:

Originally posted by ski_dwn_it:
Ok gents. Don't give a $uck what you run or have done.

Methods you use with examples or you don't have anything worth saying.

quote:

Originally posted by I Hate Dragsters:
what was the mph on the two runs?

quote:

Originally posted by botmbulb:
Jesse, are you still carrying the front end?

quote:

Originally posted by ski_dwn_it:
Not as far as it once did as I have it detuned a lot with new motor and to prevent the show wheelies.

quote:

Originally posted by Lenny5160:
Crew Chief Pro will assume that the 1000’-1320’ increment will be the same as the prior run. I start there but almost always adjust up or down a few thou based on how the incremental times were trending earlier in the run compared to the run before.

You can also establish a “ratio” based on your last wide open run, divide the ET/1000’ time. Then you can multiply your 1000’ time by that number to complete future runs as long as there wasn’t a major change in the wind.

These are 1/4 mile examples but will also work using 660/330 times. It’s easier to be accurate with 1/4 mile completion just due to having more data points to work with.

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