hi i am trying to self cenring the wheels
on my tiger avon 2.0 pinto the camber is set a neutral. looking at the avon build book looks like i have to ajust the caster angle what is this and how is this done . and do i need to have toe in or out?

Ive heard toe out one way,
And I am sure there are others as awell.

draw a line throught the upper und lower hub carrying points. Now draw a verticle line through the center of the wheel. The angle between these two is the caster.

For self centering you want the upper mount further back (towards the rear of the car) than the lower.

Diferent folk use different angles. I think mine are about 7 degrees.

Avon geometry is a bit kaky.

Best way is a fair bit of toe out on each wheel so your car looks really odd from the front - but will centre enough for SVA.

Remember to change it back afterwards though.

And let your tyres down to about 16psi.

Pat...

i am confused how do i ajust the caster as i can not see how it can be changed. i can see what you are geting at but i can not see how it is done

you can get more adjustment if you get rosejointed upper wishbones, but as Mark says, its best preset by the position of the brackets.

Just to clarify what emsfactory said above, that when you are viewing from the side.

Don't worry about the castor - nothing you can do about it on the Avon.

Just do everything else I said.

Pat...

If you build by the drawings you will have zero degr castor. The 90 degr at the upper rail is not correct. This must be at the bottom rails. This will give you about 5,5 degr castor.

Two options.
1. Maybe you can use some washers at the bottom wishbones which pushes the lower wishbones as far as possible to the front. The upper wishbone must be pushed to the rear of the car.

2. If that doesn't help replace the upper brackets or produce some new wishbones.

Grtz

Leave them bones alone.

You can get the car to self centre as it is.

Pat...

it only needs to have a tendancy to self centre and it will never self centre as a road going production car does. cheers scott

Make sure however that the top wishbones are the rrght way around as they are handed.

Or you could put some springs under the gaters in the rack, then self centers no problem.

Leigh

quote:

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Originally posted by Lightning
Make sure however that the top wishbones are the rrght way around as they are handed.

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Increased by ~70mm each side. This makes my track ~40mm less that the back overall.

hi steve is there a right way round how can you tell is it only the top one or is it the bottom one or is it both wishbones?

I suppose you could measure them but I could only tell by holding them up against each other. basically you want them so that the top mount is a far back as possible....

I 'think' the bottom mounts are identical so you only need worry about the top ones.

HTH