tastyweat Posted August 17, 2009 Report Share Posted August 17, 2009 Hey, I've done a search on this and come up short, so sorry if this has already been asked. I'm curious... what are the differences between the various configs I keep hearing people talk about? Cheers Quote Link to comment Share on other sites More sharing options...
Tony Posted August 18, 2009 Report Share Posted August 18, 2009 Hello Taking the MX5 as an example then the varying positions would depend on.... * The intended use for the car * The body height * The volume of additional modifications * The compliance of the adjusters (range) * Tyre preservation Taking a mixture from the above then it's possible to offer a known template, fast road for example would require a lower than stock centre of gravity, reduced body roll and in an ideal world some bracing. The more aggressive static Geometry would now assume there's less dynamic gains thus maintaining a constant predicable tyre contact patch. Down side is this type of calibration borders tyre wear territory. Fast road will not satisfy the avid track driver..... For this it's assumed the car has a very low COG, offering ground effect, tuned suspension, plenty of anti-roll and bracing, the Geometry calibration can be very aggressive and tyre wear not a consideration. Example, and i mean example not law..... MX5 MK1, stock suspension, no mods, average body height Rear Camber -1 degree 14' Total Toe +18' Front Camber -32' Castor +6 degrees 17' Total Toe +12' MX5 MK1, modified suspension, reasonable additional modifications, fast road Rear Camber -1 degree 30' Total Toe +30' Front Camber -50' Castor 6 degrees Total toe +8' MX5 MK1, track car, experienced driver Rear Camber -1 degree 30' Total toe +40' Front Camber -2 degrees Castor +4 degrees and over would be good Total toe -30' The objective of the Geometry calibration is to tune the modifications and manipulate the tyres contact patch or saturation limits. The Geometric gains and losses are as fluid as the suspensions compression/ droop curve, other considerations like lat acc, thrust, braking and yaw just add to the complex mix. Quote Link to comment Share on other sites More sharing options...
tastyweat Posted September 2, 2009 Author Report Share Posted September 2, 2009 Thanks for the comprehensive reply, much appreciated Quote Link to comment Share on other sites More sharing options...
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