11 replies to this topic

[paul_mck]

Hi all, lowered my car on nitrons recently and after getting the camber measurements after alignment it was +0.3deg on the OSF wheel. I removed all the shims (bar the ABS bracket) and got it down to -0.1 ish but not sure how I can get it down to -1 ish for trackdays

 

any tips? ta.

[sford]

You can either machine a bit off the hubs/steering arms or run the spitfire steering arms (other aftermarket steering arms are available). They should allow you to get the camber you desire. 

 

http://www.spitfiree...rm-system-vrsas

 

https://www.elisepar...-steering-arms/

[Johnboyhgt]

Check your upper arms, you could have a mis matched one on.

Check the design of them side to side.

[paul_mck]

Check your upper arms, you could have a mis matched one on.

Check the design of them side to side.

 

good shout!

[chris_uk]

I can sell you the spitfire arms if you decide to go that way.

I had my original ones machines down, which i have somewhere you can have.

[paul_mck]

I dont want to go crazy so the machined OE ones might be the best shout, assuming the arms are correct

 

if you wanted to sell your set Id be interested, else how much am I looking to take off? a couple of mm?

 

on a sidenote WTF neg camber increase do you get per 1mm shim? Ive seen 0.25 and 0.5deg mentioned and my measurements dont equate to either.

[chris_uk]

as a rule of thumb 0.25 per 1mm shim. 

[SteveA]

Be aware that changing the camber will affect toe. Deffo worth checking when you are done to make sure it's inline with what you expect 

 

Also make sure you account for your weight as this can also have an effect (quite a sizable one in a Caterham not sure about a VX though)

Edited by SteveA, 21 October 2019 - 01:56 PM.

[paul_mck]

as a rule of thumb 0.25 per 1mm shim. 

 

balls, Id been working off 0.5deg per 1mm shim Was a thread on here too.

[Exmantaa]

Be aware that changing the camber will affect toe. Deffo worth checking when you are done to make sure it's inline with what you expect 

 

Also make sure you account for your weight as this can also have an effect (quite a sizable one in a Caterham not sure about a VX though)

 

On the Lotus/VX chassis, the toe is not affected by the camber shims. Or maybe a very tiny amount...

A change in ride height affects it much more!

[Arno]

Hi all, lowered my car on nitrons recently and after getting the camber measurements after alignment it was +0.3deg on the OSF wheel. I removed all the shims (bar the ABS bracket) and got it down to -0.1 ish but not sure how I can get it down to -1 ish for trackdays

 

any tips? ta.

 

Camber measured with ballast/driver in car?

 

Also put a steel ruler across the wishbone tubes. If your lower one(s) is/are bent then you lose camber too.

 

Normally pulling all the shims, including the ABS bracket should get you close to -1 degree when ballasted (75 kg in each seat, 1/2 tank of fuel).

 

If you want more then you'll need to machine either the upright or the mounting plinth.

 

Bye, Arno.

[Aerodynamic]

At front.

Be aware that changing the camber will affect toe. Deffo worth checking when you are done to make sure it's inline with what you expect

Also make sure you account for your weight as this can also have an effect (quite a sizable one in a Caterham not sure about a VX though)

On the Lotus/VX chassis, the toe is not affected by the camber shims. Or maybe a very tiny amount...
A change in ride height affects it much more!