Castor Angle

[MarkyC]

Hi,
Can anyone tell me what the ideal castor angle is on a standard chassis?

Thanks
Mark.

[TonyD]

You will need to put the shims on the top wishbone ( jag donor ) with at least three shims to the front of the top ball joint and one behind. Then check the castor angle using the machined face on the caliper mounting lugs as a flat surface. IIRC the correct castor angle is 6 degrees but I have been on the Peronis all night !!.........

Cheers,

Tony

[TINKA]

Originally Posted by TonyD

Whats the standard chassis? Dax, AK, Pilgrim etc etc ( Dont forget the year of the chassis)

More details please.

Cheers,

Tony

We are in the Dax section

[Miket]

Originally Posted by TonyD

Whats the standard chassis? Dax, AK, Pilgrim etc etc ( Dont forget the year of the chassis)

More details please.

Cheers,

Tony

Clue in the heading

Cobra Club Forums > Tech Tips > DAX Technical Questions

[Miket]

Originally Posted by TINKA

We are in the Dax section

Bugger, got there before me

[MarkyC]

The Dax Manual states that with straight upper wishbones you start with 3 shims at the rear..... This gives me 6 1/2 degrees on the nearside and 6 7/8 on the offside , does this sound ok ? or is there an optimum setting

Mark.

[nanard289]

Originally Posted by Chunkymungus

Hi,
Can anyone tell me what the ideal castor angle is on a standard chassis?

Thanks
Mark.

Mark, what is it the "castor" angle? Is it in relation with front wheel characteristics ?

[Sidecarbod]

Originally Posted by nanard289

Mark, what is it the "castor" angle? Is it in relation with front wheel characteristics ?

The caster angle is the main setting that controls the self-centring effect of the steering. Too much angle will make the steering heavy and difficult to use, too little means that the steering won't self correct.

(Basically the top and bottom pivot points for the front wheel upright are not in line vertically when viewed from the side of the car, the top one is "behind" the lower one, the angle that a line drawn between the two would form when compared to a vertical line is the "caster angle")


Here is a good link that has pictures and words

http://www.ozebiz.com.au/racetech/theory/align.html

[nanard289]

Originally Posted by Sidecarbod

The caster angle is the main setting that controls the self-centring effect of the steering. Too much angle will make the steering heavy and difficult to use, too little means that the steering won't self correct.

(Basically the top and bottom pivot points for the front wheel upright are not in line vertically when viewed from the side of the car, the top one is "behind" the lower one, the angle that a line drawn between the two would form when compared to a vertical line is the "caster angle")


Here is a good link that has pictures and words

http://www.ozebiz.com.au/racetech/theory/align.html

Hi Pete
Many thanks for your clear explanations and your nice link. I did not do the relation between "castor" and caster My dictionary says: castor is a small wheel! Enough for me to be lost

[MarkyC]

Sorry !!
spelling was never my strong point