jevvy964

Hard to cover this stuff on a forum while typing on an ipad, I should have quit while i was behind - im out

robt964

Well I hope we're able to continue this over a drink on one of the meets one day soon There are obviously some subtleties around this and I genuinely do want to understand the differing points of view.

jevvy964

Sounds like a plan, props will include *** packet 911's and walkers cheese and onion crisps as wheels

Jcx

Ooh i am in for that! I so like a practical example.

jstyer

Here in South Texas that translates to beer, chips and salsa, and some good Mexican food.

robt964

Mark (fuch) and I had another play with the geo on Monday night courtesy of mark's buddy's garage

I *wish* I had this lift at home !



Me spannering away on the tracking...

STUARTQ

How'd you get on?

robt964

The answer to that is a very loooooooong mind numbing story..... so to summarise,

(if I remember correctly)

The REAR is -1.1 camber with 10' toe in, each side

The FRONT is where everything started getting interesting. When the geo was originally done at JZM I was told they couldn't get sufficient caster on the front right, so had to wind back the front left to match it. This was evident by the positions of the caster adjusment cams. Mark's chap at the garage set the equipment up for us then left us to play so I have to trust/assume that was done correctly (no reason to doubt this).

However the issue now was, in relation to caster, this equipment was reading in complete contrast to that of JZM! The right was waaaay to far forward and the left was too far back. WTF!!! We scratched our heads a long time over this and decided to again set them equal :-S

A repeat visit is on the cards sometime soon purely focusing on the front of the car.

STUARTQ

Rob, Marcus at Wembley tyres has a very good set up for geo.

They did my 550, which had an issue and did a very good job.
unit 32
sapcote trading estate
high road NW10 2DJ
0208-459-6191

If you try it again yourself and still have some questions, maybe get a 3rd set of figures to help you figure out where you are.

robt964

Thanks Stuart.

Vandit

Bumping an older thread.

Everyone says "max caster" and "needs more caster", but is there a point of diminishing return when it comes to cranking on the caster? Is there a point where you can get too much? Should you start to ease off on your static negative camber as your caster setting increases?

I'd love to hear Steve Weiner and some of the other setup gurus thoughts on this.

porsche mania

Yes there is a point of diminishing returns with regards caster. Wheel shimmy is what you will get. Think of the shopping trolley with knackered bearings, the extra slop increases caster to such an extent that the wheel gets an uncontrolable shake that only goes with way more forward momentum.