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Rear Steering, not really new

 
Old 03-13-2013, 05:52 PM
  #46  
Petevb
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Originally Posted by stevecolletti View Post
Very nice.
What is the suspension travel on PVX?
Max possible travel in the rear, or? I think it can compress between 80 and 100 mm in the rear, but at 1.25G s cornering the outside is compressing just under 20mm, so you're seeing movement over a roughly +/- 20 mm range on that chart, if that's what you're asking.
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Old 03-13-2013, 06:46 PM
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Thanks.

Sorry. I should have been clearer. What I was looking for was how 'locked down' the suspension had to be (on this early car turned race car) to get the curve shown on the chart. +/- 20mm is pretty locked down.

Thanks!
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Old 03-13-2013, 06:56 PM
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It's not really terribly locked down, there are much stiffer cars. What's largely going on is that there is kinematic rear-steer in the geometry that's trying to toe the wheel in, but at the same time there is compliance (flex under load) trying to toe the wheel out. At these settings they basically cancelling each-other out, and I'm left with the wheel not doing much of anything. On the graph, anyway- really the camber's moving around a lot.
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