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I would think that the dyno should show a difference with a difference in tire OD because that is actually changing the overall gear ratio. The added weight should only affect acceleration and deceleration. Daryl - 72SB ----- Original Message ----- From: "John Jaranson" <jaransonT3@comcast.net> To: <type3@vwtype3.org> Sent: Tuesday, May 03, 2005 8:07 PM Subject: Re: [T3] Wheel weight affecting whp? > > On May 3, 2005, at 12:34 PM, vwfye wrote: > > > i am guessing it could be that he used less rpm on the dyno to achieve > > the same speed as the smaller wheels/tires and thus the hp reading was > > lower. > > > > I am with Brian on this one. I suspect that the tire rolling diameter > changed and they did not compensate for the RPM change. > > Can't believe that the tire mass would make any real difference. Maybe > his new mondo large brakes were dragging and increasing the overall > drag on the system....soaking up HP. <G> > > Later, > John Jaranson > '66 Square (Sophy) > '70 Fasty (Jane 2 - Type 3 Lead Sled wannabe) > '71 Fasty (Jane -parts car due to rust) > various parts.....don't we all. > http://mywebpages.comcast.net/jaransonT3/jaransonT3/ > http://mywebpages.comcast.net/jaransonT3/2006Invasion/ > http://mywebpages.comcast.net/jaransonT3/notavwclub/ > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >