Advice on camber setting for track

[TeeLew]

BUT then everyone gives a measurement but doesn't give the reference frame.
That is the stupid part.
Thanks for the links.

The difference you're noticing is between the guys that are actually doing the alignment and the ones who have it done at a tire shop.

If you're the one actually doing the alignment with string, then you really don't care what the actual toe angle is. All you care about is that you can accurately reproduce it.

And as I pointed out, the difference in toe measurement if running 18 or 19 inch wheels is about 3/5ths of F.A. You're not going to notice the difference in that 0.1-0.2 mm error and it's never going to be the thing that determines how fast you can get around the track.

PSA - run 18's. Ford tried to get cute with the original Dark Horse series car & look where they are now. Only run 19's if you have to because of brakes.

 

[TeeLew]

Point in case, "assume" an 18' wheel, which i wouldn't caus i don't use them.

The snip from your link gave me the full picture. Here is all the information required to know we are talking about the same measurement.
Assumptions, the mother of all F'ups.

Take it easy, Francis.

 

[TeeLew]

Or lasers mounted on each wheel

Which works just fine, but I'll take string any and every day of the week over a laser.

 

[JAJ]

So, back when dinosaurs roamed the earth, 2018 to be precise, I was a guest of a pro racing team at an event at Mid-Ohio race track. I had a pit pass - and I watched a couple of races from the hot pits. Great fun.

From the time I spent in the paddock, I can tell you with absolute certainty that pro teams - prototypes, Porsche Cup, miscellaneous sports car classes teams - use string to set the cars up. When there's prize money on the line, laser just isn't reliable or precise enough. With a string setup, there's nothing that can go wrong. If someone drops a laser tool, you can't be sure it's accurate any more. If somebody drops a ball of string, they just pick it up and carry on.

 

[Junkyard Dog]

So, back when dinosaurs roamed the earth, 2018 to be precise, I was a guest of a pro racing team at an event at Mid-Ohio race track. I had a pit pass - and I watched a couple of races from the hot pits. Great fun.

From the time I spent in the paddock, I can tell you with absolute certainty that pro teams - prototypes, Porsche Cup, miscellaneous sports car classes teams - use string to set the cars up. When there's prize money on the line, laser just isn't reliable or precise enough. With a string setup, there's nothing that can go wrong. If someone drops a laser tool, you can't be sure it's accurate any more. If somebody drops a ball of string, they just pick it up and carry on.

Sigh.

So I guess I need to learn how to do this. Back to YouTube.

 

[GTP]

What laser makes a super narrow line at 9 feet away?
And how visible would a super narrow red line be anyway?
And if there is one, how much does THAT cost?

 

[GTP]

Sigh.

So I guess I need to learn how to do this. Back to YouTube.

Just order the Caliper Garage kit. Works fine. You will never go to an alignment shop again, and you will be more accurate too.

 

[TeeLew]

In the time between then and now, you'll find some sportscar teams have converted to lasers (maybe 25%), but they've done so because many of the newer setup systems have lasers built in. When first being used, the lasers will be calibrated with strings. The actual measurement accuracy is no more accurate or precise with lasers vs. strings. The advantage of the lasers is that they're a little faster to use. If you've got to get 3 cars across the pad before the next session, that can be important.

 

[TeeLew]

What laser makes a super narrow line at 9 feet away?
And how visible would a super narrow red line be anyway?
And if there is one, how much does THAT cost?

• Bloody expensive ones.
• They're easy enough to read.
• More than I have to spend.

 

[TeeLew]

So I guess I need to learn how to do this. Back to YouTube.

It's good for the soul.