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    Results 1 to 4 of 4
    1. #1
      Join Date
      Mar 2010
      Location
      Central IL
      Posts
      258

      Camber gain how much?

      How much camber gain can you have before you start to drastically effect straight line braking and tire wear.
      I have searched around for a rule of thumb for max camber gain but everything I find is geared more toward circle track applications.
      This is going to be for a purpose built road race vehicle that for the most part will only be on the street when heading to the track.
      I was thinking around -1.5° for 1" of dive am I in the ballpark or is that too much/little.
      If you need any additional details about the vehicle/chassis I can get just about anything.
      Just for an FYI I am using Performance Trends Suspension Analyzer.



    2. #2
      Join Date
      Jun 2005
      Location
      Greenwood, SC
      Posts
      2,314
      really, the short answer is, unfortunately, "it depends". I'm not going to claim to be the suspension sensei, so I'll wait for them to step in and correct where i'm wrong, but it's going to depend on your front and rear roll center, front and rear cg's, roll rate...depends on your definition of drastically effecting braking and tire wear...

      I have heard one rule of thumb: more than 10 degrees of total static camber, and you start to lose traction on most car tires. Pretty sure that's from race car vehicle dynamics.

      I can say that, for a track setup, 1.5* per 1" is not unrealistic, I think I've seen up to about 1.75*, then again the lotus elise is only, what, .3* per inch? but granted that's in street tune...

      i don't feel like this was very helpful. I'm sorry! I wish I could be more useful, alas, I am just a humble grad student.

    3. #3
      Join Date
      Apr 2009
      Location
      san diego
      Posts
      5,101
      Country Flag: United States
      Im running .66 of negative camber gain. Its good for my setup.

    4. #4
      Join Date
      Nov 2005
      Location
      Auburn, WA
      Posts
      1,359
      0.6 to 0.8 per inch is the norm for high-performance setups, I wouldn't go more than that unless if its a track car that needs it (most dont!).

      It's also important to look at what the camber is under rebound. You don't want lots of positive camber when you're at full or partial throttle, which can make corner exit a big pain. A good designer should bias the camber curve towards bump, while rebound sees little positive gain.
      Matt Jones
      Mechanical Engineer
      Art Morrison Enterprises




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