Steve Gaarder wrote: > > Steel on steel is the ultimate in low rolling resistance, > Does anyone know what the resistance actually is?
For a typical 20-inch train wheel, "the coefficient of rolling friction ranges from 0.0005 to 0.001". -- from "Bicycling Science", by Whitt & Wilson, page 108. _________ Jim Coate 1992 Chevy S10 1970's Elec-Trak http://www.eeevee.com
