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Old 11th August 2009, 03:39 PM
axle's Avatar
axle axle is offline
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Join Date: Jun 2007
Posts: 226
Unhappy The castor angle & Rear wheel aligenment

Hi there
Could some one please shade some lights on ;
A) How to adjust the caster angles on both front and rear wheels?
B) Adjust the rear wheels alignment?

As there is no mention of it in the book!!!
Regards Axle
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Old 11th August 2009, 03:46 PM
flyerncle flyerncle is offline
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Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188

Might be wrong Axle but castor angle is not adjustable and is fixed by locatation of suspension brackets.
Camber is done by the adjuster on the top of front and rear uprights.

Rear wheels could be done by making an eccentric washer that moves the lower arm in and out in the horizontal plane making it in effect shorter or longer and will move the front of the wheel in or out.

Hope this helps.

Last edited by flyerncle : 11th August 2009 at 03:49 PM.
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Old 11th August 2009, 04:38 PM
Posts: n/a

Only way to have adjustable castor on the front is to have the top arm adjustable on it's mounts...wider bracket on chassis maybe then some nice bodge washers to fill the gap up....or have the arm rose jointed(loadsa money)
The rear isn't adjustable but by making the lower arm with a toe link...(rear leg adjustable) you can alter things like toe in etc.

But that might all be hurdy gurdy nonsense
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Old 11th August 2009, 05:10 PM
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Chris Gibbs Chris Gibbs is offline
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Posts: 168

As I said in another post the front caster isn't adjustable because it's optimised for the limitations of the Sierra upright. It can be made adjustable by using slightly wider brackets and moving spacers from in front or behind.

Only mess with the caster if you really know what you're doing - please

The rear has no caster, it doesn't need any - caster is a property of steerable wheels.

The rear toe can be adjusted by using shims either in front of or behind the hub (between the hub and the upright plate) or by using 3ge's adjustable whizzo rear wishbones.

Settings? well I'd start with -1 degree negative camber front and rear and the fronts toeing in by half a degree with the rear wheels set straight ahead. If you're going to adjust the suspension change one thing at a time If you make multiple changes you won't know which has made the improvement or made things worse and if it has made things worse you only have one thing to change back to get to square one and it may be an indication that you need to adjust in the opposite direction.



Last edited by Chris Gibbs : 11th August 2009 at 05:20 PM.
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