Not with the Hoosiers. I've just been monitoring the tire wear, which is
very even. I'm getting around 8 weekends out of a set of tires with the
grip level being good the whole time. I'm seeing some extra wear on the
outside of the fronts and have been considering increasing the camber to 3
or better as you have done.
-----Original Message-----
From: Jim Gray [mailto:toodamnfunky@comcast.net]
Sent: Wednesday, September 08, 2010 6:55 PM
To: Norlin Engineering
Cc: Greg Lunker Hilyer; Mark Vaden; FOT Triumph
Subject: Re: [Fot] Hoosier R6 tire pressures
I reduced my camber from 3.3 front &
2.5 rear by three tenths for Topeka.
At 3.3 I had a 13 - 16 degree spread
From in to out with the insides being the hottest from 145 - 160. Reducing
the camber resulted in the spread reduced to eight degrees. That didn't
neccissarily make the car quicker. That set of tires was
pretty well used by Friday.
Have you taken temps with 4.5 negative?
Jim g
Sent from my iPhone
On Sep 8, 2010, at 7:30 PM, "Norlin Engineering"
<norlinengineering@comcast.net
> wrote:
> Just reread this post, and I think I see the difference. I'm
> running 2 1/2
> degrees camber up front and 4 1/2 in the back. Maybe the solid axle
> cars do
> need to run the higher pressures.
>
> Jim Norlin
>
> -----Original Message-----
> From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net]
> On
> Behalf Of Greg "Lunker" Hilyer
> Sent: Wednesday, September 08, 2010 5:13 PM
> To: Jim Gray; Mark Vaden
> Cc: FOT Triumph
> Subject: Re: [Fot] Hoosier R6 tire pressures
>
>
> "to cure for 24 hours. I understand there is some molecular
> realigning going on during the cure period.
> Jim G"
>
> FWIW -
> After talking with the Hoosier tech guys, this is what I gleaned:
> Heat cycle
> a minimum of 24 hours before race temps. 5+ days after
> heat cycle is preferred and anything under 24 hours doesn't do
> anything. 15-20% increase in tire life with proper curing procedure.
> Your results may vary but my results look to be at the high end ++.
> According to them, a 2000 lb car will reach maximum grip near max
> pressure of 41psi/cold. The trade-off will be less predictability and
> a abrupt break-away... Fine by me.
> That said, I run 38 front/36 rear cold on a 1977 lb, solid axle TR4
> with -1/2deg camber up front.
>
> Greg "Lunker" Hilyer
> TR4 #314
> Albuquerque NM
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