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the_mad_electrician

Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia
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Posted: Thu Apr 07, 2011 7:37 am Post subject: wheels alignment |
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My right wheel is pointed about 2-3 degrees to the right when the left wheel is in the center. Is this adjustable or do I need a new steering rack. _________________ 81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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Fifty50Plus

Joined: 28 Feb 2008 Posts: 1424 Location: Washington DC area
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Posted: Thu Apr 07, 2011 7:40 am Post subject: |
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It's adjustable using the tie rods. _________________ 1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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the_mad_electrician

Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia
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Posted: Thu Apr 07, 2011 8:51 am Post subject: |
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I looked at that, is there enough play in the tie rods? Well I guess I could try! _________________ 81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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!tom

Joined: 28 Aug 2006 Posts: 1941 Location: Victoria, BC Canada
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Posted: Thu Apr 07, 2011 9:21 am Post subject: |
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How are you wanting to adjust it?
Toe out (what you're describing) enhances turn-in, at the expense of straight-line stability. It's a tuning option, with, I'm sure, a factory specified suggested setting. _________________ 78 924 NA
5-lug |
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the_mad_electrician

Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia
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Posted: Thu Apr 07, 2011 9:47 am Post subject: |
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There is a noticable differance the the angle the wheels point if there was suposed to be toe in wouldn't both wheels be the same? _________________ 81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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!tom

Joined: 28 Aug 2006 Posts: 1941 Location: Victoria, BC Canada
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Posted: Thu Apr 07, 2011 10:05 am Post subject: |
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Normally, the front wheels are not supposed to be parallel when driving straight ahead. On most cars, both wheels are steering somewhat inwards; the left wheel is steering slightly to the right, and the right wheel is steering slightly to the left.
This is called toe-in, and it adds stability to the car.
The acraman setting is how parallel the wheels stay to one another while steering. When steering around a turn, the inside wheel follows a smaller radius than the outside wheel, so the inside wheel needs to steer sharper than the outside wheel.
Acraman is not easily adjustable, and it's pretty far from an ideal setting on the 924. To adjust this would require moving the steering rack in the car, and/or adjust the steering arms on the spindles. Both of these would require fabrication.
Toe is adjustable, and as I said, it's normal for there to be a little bit of toe-in on cars. Some cars (race cars in particular) will run with a little bit of toe-out, as the instability this causes can get the car to turn in more aggressively than the conventional, more stable toe-in.
So, what do you want? A little bit of toe in will give optimal tire wear, while a little bit of toe out (or parallel) may give you the aggressive handling characteristics you're interested in, or maybe you want a more neutural handling car which would have a little toe in. _________________ 78 924 NA
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the_mad_electrician

Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia
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Posted: Thu Apr 07, 2011 10:14 am Post subject: |
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| !tom wrote: | On most cars, both wheels are steering somewhat inwards; the left wheel is steering slightly to the right, and the right wheel is steering slightly to the left.
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This is not what's going on, the right wheel is pointing right. _________________ 81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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Khal

Joined: 26 Sep 2003 Posts: 4872 Location: Sunny and lovely interior BC, Canada
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Posted: Thu Apr 07, 2011 10:26 am Post subject: |
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| the_mad_electrician wrote: | | !tom wrote: | On most cars, both wheels are steering somewhat inwards; the left wheel is steering slightly to the right, and the right wheel is steering slightly to the left.
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This is not what's going on, the right wheel is pointing right. |
Clearly, it's been set up for NASCAR. Go fast, turn left.
 _________________ '80 924 Turbo |
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fiat22turbo

Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR
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Posted: Thu Apr 07, 2011 10:29 am Post subject: |
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Did your lower strut mounting bolts slip?
Changes in camber will effect toe and vise-verse.
Either way, time to pop the wheel off and give that corner a good shaking to see if anything is loose.
Please make sure the car is well supported before you try this.... _________________ Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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joejax

Joined: 02 Dec 2009 Posts: 919 Location: Jacksonville,FLA,USA
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Posted: Thu Apr 07, 2011 11:29 am Post subject: |
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Hey mad , I did a halfa$$ alignment by laying down a 10' (straight) 1x4 aligned with the back tires, and adjusting the tie rods.
The nut will break loose from the end and then you can turn the rod to adjust the toe. Worked fairly well, much less shake in the wheel, drives straight.
(Disclaimer: I do not recommend doing this procedure, just reporting what was done by a cheap SOB. Any other adjustments should be made at a qualified alignment facility.)
P.S. itom blew my mind with the great technical info on alignments. Really great info, I learn something new here everyday.(Honestly) _________________ I got nothin'
Uhhh...you got any pics? |
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