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Re: Tyre pressures, was great school

To: "Kelly, Katie" <kkelly@spss.com>,
Subject: Re: Tyre pressures, was great school
From: james creasy <Black94PGT@pacbell.net>
Date: Mon, 08 Apr 2002 15:25:59 -0700
static toe affects the cross-tread temperature too, so you arent simply
measuring the cornering temperature, but a combination.

-james c


----- Original Message -----
From: "Kelly, Katie" <kkelly@spss.com>
To: "Bay_Area_Autocross_List" <ba-autox@autox.team.net>
Sent: Monday, April 08, 2002 3:18 PM
Subject: RE: Tyre pressures, was great school


> I said, "Wouldn't that put the weight near the outside of the turn?"
>
> Make that TIRE. I meant to type TIRE. Hello.
>
> Katie
>
> -----Original Message-----
> From: Kelly, Katie
> Sent: Monday, April 08, 2002 3:11 PM
> To: Bay_Area_Autocross_List
> Subject: RE: Tyre pressures, was great school
>
>
> If that's true, okeedoke, but that doesn't make much sense to me. When
cars TURN, you know, around corners, wouldn't that put the weight near the
outside of the turn? Wouldn't it make sense that if you had even heat
distrubution, that you're maximizing the rubber that's on the ground?
>
> This is a guess on my end. I don't know much about this stuff. Charlie
Davis taught me how to use a home made pyrometer (use your hand!) that's
worked well for me.
>
> Katie
>
> -----Original Message-----
> From: Alan Gruner [mailto:algruner@yahoo.com]
> Sent: Monday, April 08, 2002 2:45 PM
> To: Jerry Mouton; Michael R. Clements; Bay_Area_Autocross_List
> Subject: Re: Tyre pressures, was great school
>
>
> The wisdom I have heared is that you want the inside
> about 20 degrees hotter than the outside.
>
> --- Jerry Mouton <jerry@moutons.org> wrote:
> > Michael,
> >
> > Have you checked with a pyrometer?  Next time I'm
> > there
> > ask me, you can use mine.  Temps should be even
> > across
> > the tread.
> >
> > Jerry
> >
> > Jerry Mouton        mailto:jerry@moutons.org
> > Laissez les bons temps rouler!
> >
> > ----- Original Message -----
> > From: "Michael R. Clements" <mrclem@telocity.com>
> > To: <kirkm@zeta-idt.com>; "'james creasy'"
> > <Black94PGT@pacbell.net>; "'Autocross'"
> > <ba-autox@autox.team.net>
> > Sent: Monday, April 08, 2002 1:41 PM
> > Subject: RE: great school
> >
> >
> > > Kirk,
> > >
> > > Are you talking about a '93 Mustang? If so,
> > doesn't that car weigh like
> > > 3300 lbs. with more than half over the front
> > wheels? So we're talking
> > > about cars that are roughly 1,000 lbs. lighter
> > with close to 50/50
> > > distribution. I would expect lower pressures, but
> > how much lower?
> > >
> > > James, your pressures seem low even for your light
> > car. But maybe I
> > > should try it. The treadwear goes all the way to
> > the sidewall corner but
> > > not over. So maybe I can go even lower?!? At that
> > low pressure I'm
> > > afraid of damaging the rims. Maybe I shouldn't
> > worry about that until
> > > the treadwear starts coming over the corner of the
> > tire.
> > >
> > > On my 2850 lb. RX-7, using V700s, I got the best
> > sticktion at 30 F / 28
> > > R. Using R1s on that car, the sweet spot was 29 /
> 27.
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