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| See [[Steering and Suspension Alignment| Steering geometry/alignment]] for more detailed information... | | See [[Steering and Suspension Alignment| Steering geometry/alignment]] for more detailed information... |
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| Camber +ve Should be top of wheel leaning out c.f. bottom
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| Caster + ve The steering axis of left front wheel slopes from bottom left to top right; right front wheel, from bottom right to top left. This would usually be the angle of a Maccy strut or the angle between the upper and lower ball joints; the actual point of contact Vs the camberline is not taken into account, just the angle, whether it leads or trails
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| Toe +ve Toeing-in. For front: Toe-in sensitises the steering and toe-out de-sensitises it (e.g. whitelining) This due to the ackerman steering geometry, if you think about it.
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| Then there's SAI (Steering Axis inclination), like caster but viewed from the front.
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| Scrub Radius/Kingpin Offset - preset. VW were early adopters of -ve scrub radius (allowing you to be totally unaware of a tyre going flat - great!)
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| Note: The slope of whole van, front to rear can affect caster, but is usually not adjustable. Heavy slope has more effect on roll-centres than caster, with regard to handling (witness overloaded Paddy Pickups swaying all over the road, also contributed to by under-inflated rears Vs fronts, for the load carried - Grandma, Grandad, 8 kids and 3 tons of knocked-off sand and cement)
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Revision as of 23:53, 23 October 2008