by eyoung429 » Wed Oct 10, 2007 10:52 am
Well, there's a lot to factor when you do a different day test......just to name some of the factors...
1. did the truck weigh the same both days?
2. was the fuel used for the test the same? ie....from the same pump...
3. air temp?
4. track temp?
5. humidity?
6. wind velocity and direction?
7. rpm at the finish?
8. truck running at the same temp?
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best way to do it is do a couple of passes and average them, make the change and log any differences in weight, temp.....etc..
do a couple more passes and then note the differences.
That's why most racers keep a log book...even going around the waterbox makes a difference rather than driving through it......
1991 IC D350 2wd Dually,st cab, full 4in Magnaflow exhaust, 3.73 gears, auto 518,HX35....goin' to twins!!!
member of the cable pull club