Michael
Yes its a heavy car and I used to drive it every day so the negative camber
had to be moderate. I also have to set the tire pressures for tire life
rather than ultimate traction. The best thing is to get the pyrometer and
watch your tire temps closely after each run. On the other hand you can
just add more drivers like James. If you go too low on the pressure than
the tires get too much flex and the car feels like jello. Good luck.
Kirk
-----Original Message-----
From: owner-ba-autox@autox.team.net
[mailto:owner-ba-autox@autox.team.net]On Behalf Of Michael R. Clements
Sent: Monday, April 08, 2002 1:41 PM
To: kirkm@zeta-idt.com; 'james creasy'; 'Autocross'
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.
> -----Original Message-----
> From: Kirk Meline [mailto:kirkm@zeta-idt.com]
> Sent: Monday, April 08, 2002 13:24
> To: james creasy; Michael R. Clements; 'Autocross'
> Subject: RE: great school
>
>
> Those are some pretty low numbers. I run about 44psi up
> front and 37 in back. Any less and the old Kumho sidewalls
> wear too quick. Just FYI and redundant but I am back on the
> this list again. Mark Watson and I will be chairing the next
> Candlestick event so if you have any suggestions fire away.
>
> Kirk Meline
> ESP - Extreme Surface Pleasures
>
>
>
>
> -----Original Message-----
> From: owner-ba-autox@autox.team.net
> [mailto:owner-ba-autox@autox.team.net]On Behalf Of james creasy
> Sent: Monday, April 08, 2002 12:53 PM
> To: Michael R. Clements; 'Autocross'
> Subject: Re: great school
>
>
> i use 21 front, 23 rear on my v700 victoracers. just ordered
> some of the new escta, and a bigger size for the front as i
> dont seem to have as much bite on turn-in as the other cars i
> rode in for the school.
>
> -james c
> OSP - Outrageous Sidewall Pressures
>
>
> ----- Original Message -----
> From: "Michael R. Clements" <mrclem@telocity.com>
> To: "'james creasy'" <Black94PGT@pacbell.net>; "'Autocross'"
> <ba-autox@autox.team.net>
> Sent: Monday, April 08, 2002 12:44 PM
> Subject: RE: great school
>
>
> > Speaking of traction, where do I get some? I'm down to 26 PSI on my
> > G-Force tires and they still don't stick much better than street
> > tires. Over the past year I've gone from the BFG
> recommended 40 PSI to
> > 26 PSI in 2 PSI increments. Lower pressures do stick a bit
> better, but
> > I have yet to get any serious "grip" with these tires. Nothing like
> > what I used to get with Kumhos on the RX-7.
> >
> > Do G-Forces really suck that bad? Is that why BFG stopped
> making them?
> >
> > OSP - Obtesting for Sticktion Perpetually
> >
> > > -----Original Message-----
> > > From: james creasy [mailto:Black94PGT@pacbell.net]
> > > Sent: Monday, April 08, 2002 12:22
> > > To: Michael R. Clements; Autocross
> > > Subject: Re: great school
> > >
> > >
> > > bumps? at candlestick? ive never heard anyone mention this. :)
> > >
> > > dude, if it didnt actually BREAK your car, you should be glad! i
> > > was a bit bouncy, but seemed to have plenty of traction
> (most of the
> > > time). my headers got loose sunday, but it seemed to
> survive sunday
> > > ok.
> > >
> > > -james c
> > > OSP - Ouch, Sucky Pavement
> > >
> > > ----- Original Message -----
> > > From: "Michael R. Clements" <mrclem@telocity.com>
> > > To: "Autocross" <ba-autox@autox.team.net>
> > > Sent: Monday, April 08, 2002 12:04 PM
> > > Subject: great school
> > >
> > >
> > > > Thanks to Vernon and everyone else who made the school
> > > happen. I had a
> > > > great time. The exercises were instructive and the course
> > > was fast and
> > > > fun. It was a blast to be in the car helping my "students"
> > > go faster
> > > > and faster. I use the word "student" in quotes because I
> > > felt like a
> > > > student myself as trying to help them go faster made me
> > > really analyze
> > > > and improve my own driving too.
> > > >
> > > > P.S.
> > > > On the back side after the 2nd slalom, my car felt like a
> > > pogo stick,
> > > > bouncing up and down working the suspension, unsetting the
> > > tires and
> > > > losing traction even in a straight line. It seemed smoother
> > > in Frank's
> > > > BMW 540. Is that just me or did others experience the same
> > > thing? Do I
> > > > have suspension adjustments in my near future?
> > > >
> > > > Michael R. Clements
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