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R56 or GP trailing arms on R53

  #1  
Old 10-25-2017, 07:44 AM
MrBlah
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R56 or GP trailing arms on R53

anyone know if swapping r56 or r53 GP trailing arms onto an R53 is legal in STX? I think it is but just wanted to clarify.

also if anyone did this, does it give more inside wheel room so I can fit more tire?
 
  #2  
Old 10-25-2017, 09:05 AM
WayMotorWorks
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Yes I know you will have just a little more room for the tire with the Aluminum arms. But not sure if it is against the rules or not. The GP did have aluminum arms so I would think it would count as update/backdate.

You will need are spacers to install the shocks though.
http://waymotorworks.com/wmw-rear-shock-spacers.html
 
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Old 10-25-2017, 11:06 AM
Burglar
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Unfortunately, that's update / backdate which is not STX legal. It is legal in SP, though.
 
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Old 10-25-2017, 11:47 AM
MrBlah
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STX allows control arm changes but the rear has all kinds of crazy regulations/rules, someone got it approved years ago by a board member but that's all I could find
 
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Old 10-25-2017, 11:48 AM
MrBlah
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Here is the rule for STX

On double/unequal arm (e.g., wishbone, multi-link) suspensions, only the upper arms OR lower arms may be modified or replaced, but not both. Non-integral longitudinal arms that primarily control fore/aft wheel movement (e.g., trailing arm(s) or link(s) of a multi-link suspension) may not be replaced, changed, or modified.
 
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Old 10-25-2017, 11:57 AM
Burglar
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Can't change them. The rule is intended to allow cars that can't get camber more camber. For the rear you can use an adjustable upper or lower lateral link, but not both. You can also change bushings.

All the confusing language in the rest of that section is to keep people from using the allowance to do stuff other than get more camber.

1. On double/unequal arm (e.g., wishbone, multi-link) suspensions, only
the upper arms OR lower arms may be modified or replaced, but not
both. Non-integral longitudinal arms that primarily control fore/aft
wheel movement (e.g., trailing arm(s) or link(s) of a multi-link suspension) may not be replaced, changed, or modified.
 

Last edited by Burglar; 10-25-2017 at 12:07 PM.
  #7  
Old 10-25-2017, 04:36 PM
MrBlah
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scca rules suck, if all we are doing is getting more tire width and still well under the limit they should allow it
 
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Old 10-26-2017, 04:41 AM
Burglar
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If you really want to update / backdate that bad you can run DSP. It's legal there.
 
  #9  
Old 10-26-2017, 04:43 AM
MrBlah
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nobody runs that class here, that's also a Hoosier class so no thanks!
 

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