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#28
February 10th 2003, 16:38
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Here it is Tim, the formula for springrates:
Frequency of suspension in cycles per minute(CPM) for racing cars without wings or ground effect is around 100-125. Figures like 160-200CPM are nearer current trends when moving towards the ground effect area. A formula for McPherson-setup is without suspension leverage, as there is none of it. CR = ((WF/187,8) x (WF/187,8)) x SW CR=coil rate; lbs/inch WF=wheel frequency; CPM SW=sprung weight; lbs Its very hard to write a formula like this...hope you get something out of it. I also found a site that covers the same matter, but much more complicated way: http://www.theracesite.com/index.cfm...m_article=1233 Justin 
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