Did you spin at all ?
At 09:02 AM 3/21/99 -0600, you wrote:
>Date: Sat, 20 Mar 1999 11:47:41 -0500
>From: Robert Trottmann <rotrottmann@davidson.edu>
>Subject: DML: 1/4 Mile Times vs Speeds
>
>I was just looking over my little paper prizes from last night and
>realized that my times varied between a worst of 14.848, to a best of
>14.679, but my speeds only varied from 91.55 to 91.87. Is this some
>evil trick by the coefficient of friction gods or what? When I ran a
>15.076 it was at 90.10....shouldn't there be more variation?
>Just wonderin'
>Robert
>
>--
>What you see is the inconsistency of your launches. Are the 60' times
>about as varied? A little slippage will make a change in the ET, but
>not that much in the mph. If you were to get big variances in your MPH
>I would wonder if you had a problem somewhere. Your MPH is only taken
>as an average of the last 60 feet. So by the end of the 1/4, unless you
>had an awfully bad launch, the HP of the engine is pulling the truck
>along at just about the same MPH most of the time. The whole thing of
>saying if you run this ET you should run this MPH is grossly overrated.
>Those are generic guestimates probably based on the performance of a
>small block Chevy. Our 455 Buick Regal would run 10.20's all day long.
>Many computer ET predictors said we should be running about 135 or so.
>Fastest MPH was 129.8. The Buick made gobs of torque to launch that
>obese 3500lb car, but would run out of steam at about 6000.
>Trucks are very front heavy, so they inherently have a difficult time
>hooking up consistently. If you want to seriously bracket race, you've
>got to get consistent launches and ET's.
>
>Sorry about the long post, but from 93 until 97 we raced that Buick
>sometimes 3 nights a week. I love bracket racing. I think it and SCCA
>Solo racing are the last forms of racing the average Joe can afford.
>
>Drew Schofield
>Visit my web page at http://www.angelfire.com/tn/page4drew
>
>
>
>
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Jack Hilton III
http://webpages.charter.net/hemi/jbd1.html
ICQ#: 32611901
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:13:19 EDT