Kirk Posted June 3, 2010 Share Posted June 3, 2010 (edited) Ok ive been trying to work this out with gav now for the last 10 minutes. http://img263.imageshack.us/img263/6505/frontsuspensionepc.png Does anyone know why there are two accentric adjusters for the lower suspension arm? Now i know the rear one with the bracket is the camber but what is the other for? Is that also camber? Are they suppose to be adjusted together? Edited June 3, 2010 by Kirk (see edit history) Quote Link to comment Share on other sites More sharing options...
Wez Posted June 3, 2010 Share Posted June 3, 2010 Caster or tow adjustment? Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 3, 2010 Share Posted June 3, 2010 Caster or tow adjustment? I suspect toe but not sure. Caster would pull it along the axis of those bolts wouldn't it? Quote Link to comment Share on other sites More sharing options...
Kirk Posted June 3, 2010 Author Share Posted June 3, 2010 Tow adjustment is on the steering rack arm so thats out and caster well im not sure about as in many cases it isnt an adjustable angle without some form of modification to the front suspension Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 3, 2010 Share Posted June 3, 2010 I'm still thinking, they are both camber, to keep the arm true. Quote Link to comment Share on other sites More sharing options...
TTRickeh Posted June 3, 2010 Share Posted June 3, 2010 One's caster one's camber, not sure which is which as I don't know my way around the front suspension as well as the back. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2010 Share Posted June 4, 2010 They work together, altering one affects both camber and castor. They need to be set in conjunction with one another. The factory manuals tell you how many minutes change each division gives, and its effect on the other setting, but in the end it's down to experience to be honest. You need KPI, camber and castor gauges to set them up properly, and there are various tweaks to get good tyre wear and lack of tramlining on none stock tyres. But basically the front adjuster has the greatest effect on castor, and the rear on camber. If you just turn them from one extreme to another you can see what the wheel does and visualise it more easily. You can also make a real pig's ear of things if you get out of sync..... Quote Link to comment Share on other sites More sharing options...
TLicense Posted June 4, 2010 Share Posted June 4, 2010 I'm still thinking, they are both camber, to keep the arm true. Imagine winding the front adjuster so the wishbone is as far inboard as possible and the rear so it's as far outboard as possible, this would push the lower outboard mounting point forward. As the upper outboard mounting point has no adjustment, this would change the caster. If you move the adjusters so they are identical front and rear, you would just be changing camber. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2010 Share Posted June 4, 2010 If you move them equally you get a far greater change in camber than castor. The rear adjuster basically pushes the bottom of the wheel straight in and out, the front has a long arm length, so has a disproportionately less effect on caster per segment turned, but nonetheless castor will alter, not just camber. Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 4, 2010 Share Posted June 4, 2010 Imagine winding the front adjuster so the wishbone is as far inboard as possible and the rear so it's as far outboard as possible, this would push the lower outboard mounting point forward. As the upper outboard mounting point has no adjustment, this would change the caster. If you move the adjusters so they are identical front and rear, you would just be changing camber. Gotcha It was late last night and I just couldn't picture it, but that makes sense Quote Link to comment Share on other sites More sharing options...
TLicense Posted June 4, 2010 Share Posted June 4, 2010 If you move them equally you get a far greater change in camber than castor. If you move them equally, you shouldn't get any change in castor. You're just moving the bottom of the wheel OB. The rear adjuster basically pushes the bottom of the wheel straight in and out, the front has a long arm length, so has a disproportionately less effect on caster per segment turned, but nonetheless castor will alter, not just camber. Agreed moving them non-equally will adjust camber to some degree if the upper point is held stationary. Quote Link to comment Share on other sites More sharing options...
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