Chris and I didn't cord any tires at CandleCom
Saturday, but as I was taking them off I did notice
they were VERY warm. And this was after the car had
been sitting in the paddock for about ten minutes.
The course was pretty fun, though. Only change I can
think of is to reduce the number of tight turns. I
had enough to do without having to throw the car into
1st to get out of those tight spots.
Scot
--- Pat Kelly <lollipop@ricochet.net> wrote:
> Get a lighter car with less expensive tires! (Very
> big grin!)
> --Pat Kelly
>
> Donald R McKenna wrote:
>
> > Too all:
> >
> > I've commented on the great "first-effort" job
> Kieth and Nanda did Saturday,
> > 5-20. However there is some food for thought, to
> be absorbed from our
> > experience, about course layout/length and it's
> impact on tire wear at
> > 3-Com.
> >
> > The length of the course (in time), yesterday, and
> the many, low speed,
> > tight corners really increased tire wear per run.
> Although 3-Com is,
> > technically, asphalt, it is quite abrasive due to
> the type of slurry coat.
> > My tire wear measurement numbers, over the years,
> indicate that the 3-Com
> > lot is the most abrasive lot we use following
> McClellan cement and the
> > Castle cement site. By comparison Stockton wear is
> about 2/3 that of 3-Com
> > and Mather wear is less than half. The old Oakland
> surface , before the new
> > slurry (for which I don't yet have creditable
> numbers), was our lowest-wear
> > site, slightly better than Mather.
> >
> > Before yesterday's event, we'd run 2900 seconds
> (60 runs @ 48 sec) on our
> > tires on various surfaces (2 at Mather, 2 at
> Stockton, 1 at new-Oakland, 1
> > at Laguna and 2 at 3-Com)
> >
> > The bottom line of this comment is that we ran
> tires with only 58% of the
> > tread worn before the event and corded 3 of 4 on
> Saturday. If you ignore the
> > tread rubber under the grooves, before you hit
> cord, the last 42% of tread
> > was worn off in 13 runs totaling 1080 seconds.
> >
> > Do the arithmetic, 18% of our runs used 42+% of
> the tires. At that rate we'd
> > get an average of 9, 4 run, entries per set of
> $900 tires.
> >
> > The message here is: In the future, don't plan to
> run long and tight corner
> > courses on agressive surfaces like 3-Com, it's too
> expensive!!!
> >
> > Don
>
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