lola b99 starting point setup

[rodorico83]

Hello guys.
I was following the initial setup sheet for my lola F3000.
And is saw a couple of things that looked weird to me.

Front Spring preload -> for front 6 platform turns on a 800lb spring when static weight on each front wheel is about 220lb, being 2mm per turn we are talking of about 377lb
This would be a zero drop configuration that would require about 150lb more to start damper compression.
I never had zero drop conf before and i dont think the best starting point ...
Any of you guys with similar car is running on similar configuration ???

Inital setup for rear is 1/2 turns on 1000lb spring which makes more logic to me.

Another one is front toe-out of 3mm total, not much but out when normally on front you keep on zero or slightly in for high speed stability

[Rick Kirchner]

I don't have specific knowledge of this cat, but FCs - another flat-bottom ground-effects car - frequently use front preload and toe-out. I use toe-out, it helps with turn-in, but I would use less of it if I was going to run someplace with long, long straights. When we ran the oval at Indy I set the fronts at zero toe.

The van diemens are usually zero-droop and it was suggested I run 1/4" pre-load, about 100 lbs.

[tlracer]

Regarding the front preload vs. corner weight, are you taking account of the rocker ratio, etc?

[David Ferguson]

First, run the car given the setup sheet. Run enough to understand if there are any issues, and to where the driver can get a consistent laptime for a few laps in a row.

Then remove some of the preload -- there will only be three results -- better, worse or the same.

Figure out which one.

Make a change...

repeat...

[Jerry Kehoe]

Any idea what the motion ratio is front and rear?

[rodorico83]

I don't have specific knowledge of this cat, but FCs - another flat-bottom ground-effects car - frequently use front preload and toe-out. I use toe-out, it helps with turn-in, but I would use less of it if I was going to run someplace with long, long straights. When we ran the oval at Indy I set the fronts at zero toe.

The van diemens are usually zero-droop and it was suggested I run 1/4" pre-load, about 100 lbs.

with only 100lbs is zero droop ?? are those car on less than static 100lbs each front wheel ??

[rodorico83]

Regarding the front preload vs. corner weight, are you taking account of the rocker ratio, etc?

I did not do any math yet. and the weight i took was without driver and nose cone. so i expect some more weight

[rodorico83]

Any idea what the motion ratio is front and rear?

sure 1 on fronts with a rising rate % of 6 and 1.15 linear on rears.