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Old 02-21-2009, 08:24 PM
ccracin's Avatar
ccracin ccracin is offline
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Default Ideal Geometry

Well as I have been ready on this site over the past years it seems a large portion of the debate has to do with front end packages. Sub-frames, control arms, spindles, etc. etc. Alot of companies have great marketing practices but never really provide actual data. Others do. So here is my question. What would everyone consider the ideal suspension geometry to be? This is assuming we aren't worried about track width (with in reason) or frame rail width (again we still have to have an engine up front for this exercise). The ride height would have to be reasonable. I guess ideal is also different for different needs. So lets say we break it down to 3 separate areas. Street, Open Track, Auto Cross. I'm really hoping to see some of the heavy hitter chassis guys respond. I love looking at the dynamics of all this. I have read all the standard fair as well as magazine articles. They all tell you how to measure bump steer, ackerman, roll center, etc. But very very few of them actually recommend specs. Some things I would like to see:

Roll center location and migration specs. in dive and roll
Roll center to center of gravity relationship
Caster
Camber
Camber gain per inch of travel
Caster gain per inch of travel
Ackerman for a given steering input
Bump steer ( amount of toe in or out per unit travel)
King Pin angle
Scrub radius
Anti-dive
Ideal amount of body roll to design for at max lateral-g

Have I missed anything or am I full of SH...... on one of the items I listed?

Don't disappoint me folks!
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