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On Fri, 2006-04-21 at 12:33, timothy kuehn wrote: > Hey y'all. > > Does anyone know the ratio between engine rpm & true rear wheel rpm for 4th > gear? > > Just for the academic fun of it, I'm trying to figure out distance travelled > per engine rpm, and how that figure changes by tire size. A seemingly > slight change in tire size makes a surprising difference in total rolling > circumference of the wheel - which turns into an even more significant > number when multiplied by thousands of revolutions per minute, right? Maybe > not a huge difference, but still fun to think about. I have an equation for > it all, but I'm missing a variable! > > I have no radio - these are the things I think about when I drive. > The ratios are listed someplace on my web site. http://classicvw.org/gallery Search for "ratios" -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~