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anti-squat with an IRS

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Old 02-27-2009, 01:13 PM
  #21  
XPC5R
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Just from observation, the C5 seems to have near 100% anti squat. Not the best thing for forward bite, as it seems to shock and spin the tires a lot.
Old 02-27-2009, 01:53 PM
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TLGunman
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Originally Posted by XPC5R
Just from observation, the C5 seems to have near 100% anti squat. Not the best thing for forward bite, as it seems to shock and spin the tires a lot.
The C5 and C6 have a LOT of anti-squat. I was surprised to see how much they had.
Old 02-27-2009, 03:28 PM
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ZR1 MK
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Originally Posted by TLGunman
Simply put, both use unequal length double wishbones, with outboard brakes.
Anti-Squat?
Old 02-27-2009, 03:59 PM
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TLGunman
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Originally Posted by ZR1 MK
Anti-Squat?
Some, but not a lot, I'm not at liberty to give out numbers. We've changed it depending on tire manufacturers, and issues getting power down, on turn exit, for example.

I've been looking for a "public domain" picture online, to post, but so far I haven't had much luck.
Old 02-27-2009, 06:56 PM
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BrianCunningham
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Originally Posted by RC45
Does any one know of a similar detailed and dimensioned suspension diagram for the C5 and C6 suspension?
Does this help?



SEMA members can get most of the CAD files.
Old 02-27-2009, 07:25 PM
  #26  
DaveL82
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I'm dealing with the same issue on my older 80 vette. While redesigning the rear for track days I have 3 vertical positions to mount the lower trailing link at the frame. The upper link is a fixed location. Of course this meant I also had to add a toe link.

Can't wait to take to the track this spring but still have a few things to complete then get a base 4 wheel alignment done. Looks like the wife is going to be first to the track with her Miata

Been a fun project building everything myself but it's been a lot of work especially building a hub carrier to accept the trailing links, toe link, coil-overs and Wilwood calipers.

Last edited by DaveL82; 02-27-2009 at 07:33 PM.
Old 02-27-2009, 08:09 PM
  #27  
BrianCunningham
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Have you seen this?

http://www.dragvette.com/




or this?

http://www.guldstrand.com/scripts/pr...?idproduct=138
Old 02-28-2009, 07:29 AM
  #28  
DaveL82
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Brian, Yeah saw both of those and if I had to do it over again I might consider the Guldstrand kit (the kit is not cheap). The dragvette kit does add the safety item of a driveshaft loop but not sure if the upper link is adequate for me to use it as a true upper link and not use the drive shaft as the upper link. I think the dragvette kit also removes camber gain which may not be good for a road race track car.

My time this week was adding a bracket to terminate the emergency brake sleeve near the hub. Texas tests the emergency brake for the nannual safety test. Another drawback to having a car that's licensed for the street.
Old 03-04-2009, 06:53 AM
  #29  
DaveL82
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I bolted everything in place this weekend. Let the rotor off

Wish I had control arms like the modern vettes but it's been fun. This was just a temp install so a few more things to complete like the upper shock mount.

rear suspension bolted in



Pic of the hub carrier. The long arm is for the rear toe link which runs parallel with the strut rod

Old 03-04-2009, 08:46 AM
  #30  
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Nice work there!
Old 03-05-2009, 10:39 AM
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DaveL82
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Thanks Brian. It's been a lot of work and buying the Guldstrand kit would be the way to go if funds allowed.



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