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Old 08-08-2008, 12:42 PM   #3 (permalink)
dcb
needs more cowbell
 
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Join Date: Feb 2008
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pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
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FWIW, I went from a 47 tooth rear sprocket to a 37 tooth (I have a 15 tooth front sprocket FYI). It is a significant reduction in rpm for a given vehicle speed.

Now my 4th gear is like what my 6th gear used to be. It took a little getting used to when taking off in first, and when selecting gears for a given situation, but I like it and am getting good mpg results with the setup. It's all instinctive now.

When cruising I am at a lower RPM with more throttle opening (more efficient generally), and if I need the acceleration to get up a hill or something, I can always downshift.
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