I was launching around 3500 rpm. Any higher and the slicks would spin (I was not heating them up much .... I will be installing a line lock soon). The car seemed out of control while approaching the finish line, above 100 mph (I was not hitting the brakes and did not attempt to slow down for the first exit).
Congrats on the win! What rpm were you launching at? Also, at what point did
>you feel like it was starting to lose control with the lower air pressure in
>the slicks? While making the run, or while slowing after the run? If it's
>while slowing down, were you nailing the brakes to try and make the first
>return road? That is the biggest mistake some people make the first time
>they run slicks. People fail to remember, that at speed, the slicks grow,
>and when slowing down, need to settle back down to their normal size. The
>best way to slow down is just lift off the go pedal, and let the slicks
>settle back down, then slowly start applying the brakes. I've seen several
>people make the mistake of nailing the brakes as soon as they went through
>the traps, and car get real squirrelly, and end up getting sideways and roll
>the car. When I had mine to the track for a test & tune session, I started
>off at 15 psi and ended up dropping them to 10 psi, and had no problems at
>all. Of course, my ET & MPH weren't as fast as yours, due to valve springs
>that were shot. I will be replacing them this coming weekend, and shortly
>after that will be going to another test & tune session. This time, it
>should make it through the 1/4 mile with no problems.
>
>--
>Gary
>Drag Racers live by the code set down years ago:
>"If some is good, more is better, and too much is just right".
>
>
>"Duker" wrote in a message:
>> The slicks proved to be consistent (I won the GTA class at Sparta on >> Sat).
>> Here is my best run in my 1987 Mustang GT Convertible on MT ET DRAG
>> slicks (26x8.5x15) :
>> Rxn : 0.540
>> 60 ft : 1.840
>> 330 ft : 5.407
>> 1/8 ET : 8.517
>> 1/8 MPH : 81.93
>> 1/4 ET : 13.260
>> 1/4 MPH : 103.22
>> This beat my previous best on street tires of 13.644.
>> I picked up approx 0.16 in the first 60'. (mph did not change)
>> I ran them pretty hard (started at 20 psi and worked down to 15 psi)
>> but at 100 mph it fealt like I was losing control of the car so I did
>> not have the balls to take more air out !
>>formatting link
>
>
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