Camber: does this look right? (track video inside)

[CarlC]

It's hard to do tire temps on a controlled open track day. Think in terms of seconds, not minutes, to get reliable temperatures.

A helper makes it much easier. A simple table make it fast and easy to interpret the data:



LF........ Outer............Center.............Inner......... ..RF.............Inner..............Center........ ....Outer
PSI

LR.........Outer...........Center..............Inn er...........RR............Inner...............Cen ter............Outer
PSI

Periods are added to keep the formatting here. Normally the four are arranged like they would be from a plan view of the car with the pressure just above or below the tire in question. It makes taking the readings easy to remember since they are oriented just like they would read from the car.

All tire temperaturs first, then pressures. The pressure will change much slower than the temperatures.

You're 95+% of the way there. It's that last bit that's tough, especially if you can't move weight around too much (me).

Oh, and Tom, we're not that skinny either.

[Flash68]

Thanks Vin. (cough) D*ck (/cough). Grey hair yes... but not quite blue yet ! (in my best Monty Python impression.)

Dave - To add to Carls direction in length of time before temps were taken... in the future, try and get inner, center and outer temps... as it will associate to any pressure issues that may be present or help explain possible cupping issues.

The second, third or fourth run temps do show an alignment issue... and my intripretation is that you need to get the chassis scaled to verify my input. I believe that you need to read your corner weights, with you in the car, just after you do the alignment with you in the car. Basically, set the car up as you would be on the track... do an alignment and then scale it... with you and the amount of fuel (perferrably totally full or totally empty.)

Another question... which direction were you running the track and which course was set up for that day ?

The only thing that stands out to me... is the RR temps. The chassis either needs more cross weight to distribute the front loads better and to take some load off of the right rear. Its either that... or a possible bend housing or a loose differential... ie, worn clutch packs or not enough preload shim to the clutch pack.

If I could see scale numbers, as it is... before any change, that would help.

But seriously, nothing to be really alarmed with. They -look- proper... and it just needs a little nudge in adjustment.

Still have not gotten to a scale of any kind yet, but it's on my list.

Streets of Willow was CCW config that day.

I don't know if it explains it ALL, but the psi changes were not uniformly applied all day, until the end of the day.... we were playing with things left to right.

It's hard to do tire temps on a controlled open track day. Think in terms of seconds, not minutes, to get reliable temperatures.

A helper makes it much easier. A simple table make it fast and easy to interpret the data:

LF........ Outer............Center.............Inner......... ..RF.............Inner..............Center........ ....Outer
PSI

LR.........Outer...........Center..............Inn er...........RR............Inner...............Cen ter............Outer
PSI

Periods are added to keep the formatting here. Normally the four are arranged like they would be from a plan view of the car with the pressure just above or below the tire in question. It makes taking the readings easy to remember since they are oriented just like they would read from the car.

All tire temperaturs first, then pressures. The pressure will change much slower than the temperatures.

You're 95+% of the way there. It's that last bit that's tough, especially if you can't move weight around too much (me).

Oh, and Tom, we're not that skinny either.

Carl, I do have helpers. I had a pit crew of 2 (I am not a handy guy -- I do more damage than good when trying to tinker on cars) but we are all relatively inexperienced when it comes to serious road racing, which I am catching the bug of quickly.

Tom/Carl -- thanks for the guidance thus far.

[chicane67]

Dave- Well... CCW explains a fair share of that too. But, man... you are close. A couple of tweeks and the car will be there.

Oh, and Tom, we're not that skinny either.

Why does someone always gotta pick on the big guys ?? Hell, I'm down 45 lbs from Spring Mountain this last Novemeber...

[CarlC]

Why does someone always gotta pick on the big guys ?? Hell, I'm down 45 lbs from Spring Mountain this last Novemeber...

Note the "we" in my response. I'm down 15# since April 27. I'm no Mr. Twiggy either.