Yeah, but why would I want to give up grip? I don't get it. I'll admit, I can be dense at times.

 

It has absolutely nothing to do with giving up grip. Its about moving more grip to another phase of the corner and holding/sustaining it there longer.


I don't know about you but I'd much rather have a car I can sustain 1.2g's all the way through entry, mid, and exit rather than one where I peak at 1.25g mid corner and then fall off on corner entry and exit.

 

Wouldn't tire tempts indicate the right amount of camber? If it is more even then you know it isn't peaking on the inside or outside part of the tire.

 

Ahhh.... I see what you're getting at. Interesting. I'll have to do some testing on that... right after I figure out what tire pressures I should be running. I still don't know that.

 

Of course they will, but you need a combination of multiple infared tire temp gauges and an accelerometer/GPS based datalogger will show you though. Plot them next to each other and then you'll see where you moved grip.

Pyrometers are not all that useful, mainly because there are straightaways, braking zones and cool down time before you get back to your grid spot. I shoot for whatever camber gets me the handling balance I want. If it means more wear on the outside edge because I want more corner entry and exit grip, then so be it.

"After the run" tire temps should typically be 10-15deg hotter on the inside edge because of braking.

 

I have to raise my car's rear up and get a alignment, I definately have too much camber in the rear and even minimized it is too much.

 

You can thank Mr. Whipple for enlightening me a few years ago on this - he runs close to 0 camber on back of his Type-R because it keeps the car tight transitionally (body has not reach maximum roll angle, so very little camber gain or loss) and then loosens the car from mid-corner off (quite important on a 180+hp FWD car )

 

[QUOTE=glagola1,Apr 6 2010, 01:45 PM] FWIW, when I installed my shocks, I set the spring perches to the exact same height on both sides of car.

 

I just saw this. I suspect that's the low-speed rattle I'm getting as well. I've also recently started to notice an on-power vibration to the car that i think may be the rear axles.

I have a set of spares that I'll try to install tonight... hopefully it'll be rattle and shake free for the tour this weekend.

 

Don't worry too much about tire pressure. I'd figure out a good alignment and stick with it. You can modulate tire pressure at each event. I.E. some courses are a lot tighter than others. On tight courses I lower front pressure and raise rear. I can usually tell by my first run what it's going to take to get the car to rotate how I want it. Some locals complain... because they say I'm "drifting." Of course, if I'm "drifting" and get top pax.. they usually shut up.