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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,705
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Biased Alignment
I seem to remember that cars were set up to counteract the effects of the crown in the road so that you weren't constantly steering to the center of the road. This would not be the same as "pulling" to the left, or would it? This was done back in the day of the narrow bias ply tires.
I don't think they do this anymore and I don't think it was prevalent in the Southwest, as most roads are not high crown roads (the SoCal freeways mostly slope to the center). Did they do this to 911s in years gone by? And how was it accomplished? Camber, caster, toe, or a combination of 2 or more adjustments? |
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07-29-2003, 10:23 AM
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Join Date: Apr 2003
Location: Las Cruces, NM
Posts: 2,459
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I think it's toe in.
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2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix 
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07-29-2003, 11:01 AM
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Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Porsche alignments do not compensate for road crown conditions since both left and right side specs are identical.
A good example for crown compensating alignment could be found in a mid 80's Caddy FWD that called for 0 camber left and 1/2 degree negative on the right which, due to the cone effect, would cause the car to lead slightly to the left. Cheers, Joe Last edited by stlrj; 07-29-2003 at 12:27 PM.. |
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07-29-2003, 11:06 AM
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Per the spec book, the alignment settings for my '69 are all square, they're not biased one way or the other. If you want to do this for track reasons, it can be done as the NASCAR guys do it with a combination of camber, caster, trail, corner weight and wedge.
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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07-29-2003, 11:08 AM
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Join Date: Aug 2002
Location: Torrance, California
Posts: 506
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Milt,
Caster is the adjument that can be advanced to correct for the crown of the road. Have your tech advance the caster +.3 degree's higher on the right than the left. Camber also can effect road crown when setting the car up for track events. Anything over -.5 degee's will be road crown sensative. Hope this helps, Steve Alarcon Last edited by Steven Alarcon; 07-29-2003 at 05:37 PM.. |
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07-29-2003, 05:34 PM
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1969 Porsche 911E 2.0 E
