Quote:
Originally Posted by GrandSport
where are you feeling understeer? Can you give us a time?
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0:37;
1:14;
1:18;
1:53;
1:55
Quote:
Originally Posted by GrandSport
ya, I saw a hint of oversteer if anything coming out of some turns.
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When I'm into the throttle a bit early or a bit aggressively, yes.
Quote:
Originally Posted by GrandSport
Normally, I'd agree but his temps show the outside being very cold (or at least cold, depending on ambient). It looks like he's running too much. Am I reading that right? Inside temps are hot and outside are cold?
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Yes, you are reading that correct. My inside edges are always equal to or (in almost all cases) greater then the outside temps.
Quote:
Originally Posted by tony_r
I can't tell much from the tire temps he posted, for a few reasons. When were the temps taken? Straight off a hot lap or after a cooldown? Directly after getting to pits or was there time in between? How were the temps checked - with a probe or surface IR sensor?
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Sorry, I should have given more complete background:
-> Temps taken right after leaving the track. Maybe 400 meter (1300 feet) cool down?;
-> Readings taken using a Joe's Racing tire pyrometer w/probe;
-> Temps always taken in the order: LF, RF, RR, LR THEN pressures measured in the same order.
Quote:
Originally Posted by tony_r
I would expect even more heat from the tires with a 250whp 86 on 245s. I would expect maybe 160-180 or so. I believe the RS4 optimal range is around 170? I know the Rival S 1.5 is 160.
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According to the Dynapack it makes 250 WHP @ 6750 RPM, although I was shifting at 6500 all day.
I'm running 255/40R17's (not 245's) on 17lb 17x9 rims.
Quote:
Originally Posted by tony_r
Based on what is here, I can make general assumptions. Seems to me like this is a CW, primarily right hand turn course, so the LF is taking a lot of the load and the inside tires are cooling down. Either that or the final corner before coming off the track is a right hander.
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Correct - we were running clockwise. 2nd last corner is the long right-hander at end of the straightaway, then the dog-leg left then we pit.
The start/finish line is between the dogleg and pit entrance - I normally push right until I cross the finish line, then brake hard and dive into the pits. We were running the "Technical" layout in the top left. Map isn't entirely accurate. It looks like 1 long sweeping turn to go onto the back straight - in reality it is 2 corners and the pavement between them is a bit rough.