So how did you like the tires? Are they Radials? What static camber are
you at? I'd be looking for the middle temperature to be close to either
the inside or outside edge, whichever is hotter. Your inside edge should
naturally be hotter because it gets better cooling and if you have
sufficient negative camber it's the edge that does all the heavy lifting
down the straights.
As I recently learned the hard way, you don't want to set camber by tire
temperature unless you've got a skidpad or a track with no appreciable
straights. But you can trust tire temperature to tell when you're
over/under inflated.
All the same, if they are radials they will tend to like a lot of
camber--like 3 to 4 degrees. You'll corner well in the high-g turns,
though not in the fiddly stuff and your lower rolling resistance down the
straight will give higher top speed. I've found high camber increases
understeer in slow turns and decreases it in fast turns. I don't know why.
I'm trying to sort out what I'm learning accounting for the differences
between my high-downforce Radical on slicks and minimal downforce Peyote
on treaded Hoosiers.
-----Original Message-----
From: Bob Kramer [mailto:rgk@flash.net]
Sent: Monday, May 19, 2003 12:21 PM
To: Bill Babcock
Subject: Dunlop tires
Bill,
Took your advice and ran the tires up from 20 pounds. By the end of the
weekend I wasn't able to determine the perfect pressure setting but I was
up to 24 in the rears and 22.5 LF and 23RF. I packed up the pyrometer
early and didn't get the temps for the last session, but I was getting
closer to even temps in the front, around 160. The rears lagged at around
145 but were moving closer to even. more work to be done. My lap times
didn't change appreciable, but I was fighting a stumbling problem which
appears to be electrical, and the throttle shafts breaking didn't help
any. The advice was sound and helped. Thanks, Bob
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