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String alignment question

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Old 05-28-2020, 10:04 AM
  #31  
m3bs
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Note the precision application of painters tape to minimize scratching...

I tried just using the arms without the washers, but they weren’t quite long enough.


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Old 05-28-2020, 10:11 AM
  #32  
Hindsight2010
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I've done something similar and then used bungee cords to hold the assembly onto the wheel at a constant pressure while I performed my adjustments or turned the steering wheel to check caster.
Old 05-28-2020, 10:22 AM
  #33  
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Thanks m3bs! That is a different device from the SmartCamber, but I think I can fabricate something that will work on my SmartCamber ones similarly.
Old 05-28-2020, 03:36 PM
  #34  
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Originally Posted by JTT
Thanks CSM. So with that style gauge, the adaptor magnetically attaches to the face of the hub nut? or the end face of the axle shaft? Difficult to tell from the pictures, descriptions and videos.
They magnetically attach to the face of the hub. They're hollow in the center to clear the axle/hub nut.
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Old 05-29-2020, 07:28 AM
  #35  
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Thanks CSM!
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Old 05-29-2020, 01:31 PM
  #36  
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Measure from the wheel diameter, not tires.

This helped me.


So on an 18" wheel, where I want 17 minutes toe in, I'd go to bottom chart, and find 15', which yield 2mm, and then go to top chart and find 2' which yield .3mm. So total toe in would be 2.3mm. That would be the delta between the front of the wheel and back of the wheel. That will yield 17' toe in.

Hope that helps.
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Old 05-29-2020, 01:35 PM
  #37  
Hindsight2010
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Originally Posted by awew911
So total toe in would be 2.3mm. That would be the delta between the front of the wheel and back of the wheel. That will yield 17' toe in.
Thank you. Wouldn't it be the sum of the delta between front and back of the wheel on both sides? IE if the left wheel had a delta of 2mm from your string, and the right wheel had a delta of 2mm from your string, the total toe would be 4mm?
Old 05-29-2020, 02:41 PM
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Originally Posted by Hindsight2010
Thank you. Wouldn't it be the sum of the delta between front and back of the wheel on both sides? IE if the left wheel had a delta of 2mm from your string, and the right wheel had a delta of 2mm from your string, the total toe would be 4mm?
Your statement is correct.

For example above, the 'Performance Setup' for the 991.2 GT3 Cup car calls for Rear Axle Left 17' and Rear Axle Right 17'. The chart above is a straight conversion from degrees / minutes to milli-meters.



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