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#1
March 6th 2003, 08:06
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Camber adjustment with IRS
What options there are to make an IRS rear-axle fully camber adjustable?
I know that Porsche 944 trailing arms have an adjustment for toe and camber, but converting to Porsche bits is too $$$ for my budget. Swapping trailing arms and rewelding shock mounts wont go with Finnish authorities. Oliver; is there any high-tech "käfer-cup way" for this? Justin 
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#2
March 7th 2003, 08:17
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Hi
You can just use the early 944 spring plates and then you would just need to drill 1 extra hole in your bug trailing arm to make it like a steel 944 arm. Steve C
__________________
STI powered 1303 in the works.
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#4
March 10th 2003, 10:15
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Justin,
IMO there is no camber adjustment possible in the rear, not even with the porsche parts. The porsche parts only allow fine ride heigth adjustments (it has an extra excenter bolt for this) and toe adjustment. Toe adjustment is already possible with all IRS and swing-axle set-ups... This question was also discussed in another GL forum, if I remember correct. It was suggested that camber was only to be altered, when you would reweld the pivot point of the arm (in the corner fork/torsion housing) at a higher level (if you want to reduce camber). Walter
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#5
March 10th 2003, 12:26
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It is possible to adjust camber, I've done it!
Enlarge the holes in the spring plate and rotate the trailing arm in these holes. For example, if you want more -ve camber on the rear right wheel, as you look at the hub from the side, rotate it anticlockwise, then tighten up again... Hope this helps, Rich
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http://www.ricola.co.uk
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#6
March 10th 2003, 15:33
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Rich,
I must have my suspension definitions mixed up, I guess, since I thought camber meant the 'vertical-ness' of the wheel. i.e. if the wheel stood 100 % straight or vertical, than camber was '0'. And if you have a swing axle with a lot of lowering, you got a lot of negative camber. Also when you proceed as you describe, with elongated holes and the trailing arm goes down i.e. turns anti-clock wise, then you will also raise the cars suspension? When than as a side effect the camber also changes, than I really wouldn't describe it as a adjustable camber setting methode, but than again I'am really no suspension guru... Or have I got it all mixed up??? Thanks in advance for any explanations. Walter
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#7
March 10th 2003, 17:35
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Wally- You are correct.
Rich- You are speaking of caster, not camber. Both get mixed up alot.
__________________
Julian '74 Super "If you are under control you're going too slow" - Parnelli Jones
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#8
March 11th 2003, 05:05
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Sorry, I'm correct on this one as I have done it!
Wally: you are correct in what camber is... If you think of the axis of the rear stub axle, it is not in line with the rotation axis if you rotate it in the way I described. The rotation axis being the inner trailing arm bush and a point in the middle of the 3 bolts on the spring plate. I agree that the caster of the assembly is changed but don't think it has any real affect on this suspension design. Rich PS when I said elongate the holes on the spring plate, do it in such a way that enables the movement that I described, not all parallel.
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http://www.ricola.co.uk
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#9
March 12th 2003, 09:10
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hi
To get the most out of what you have as far + camber is concerned, jack up car, loosen the bolts & nuts on your spring plate, put a jack under the shock mount and raise it until all slack is taken up, tighten bolts, this will give you maximum + camber, your moving the arm anti clockwise like Rich said, if want a little more do what Rich said to do with bolt holes. Steve C
__________________
STI powered 1303 in the works.
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#10
March 12th 2003, 18:31
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I'm sorry. I thought you were speaking of something else. My apologies Rich.
__________________
Julian '74 Super "If you are under control you're going too slow" - Parnelli Jones
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#12
March 13th 2003, 11:34
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So basically you are lowering the car, without changing the splines on the torsion bar, to gain some camber?
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#13
March 15th 2003, 06:10
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So I could weld an eccentric adjustable fixing onto the springplates connection holes (similar to the one on front controlarms inner mounting)?
I have understood that Porsche 944 uses something like this? Justin Last edited by juse; March 18th 2003 at 02:49.
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#15
March 17th 2003, 05:50
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I still don't get it, maybe I am just being dense. Can someone draw me a picture?
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