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+--- Thread: Sprocket/Mpg ratio? (/showthread.php?tid=77434)
Sprocket/Mpg ratio? - Dudeofrude - 19-02-17
As some of you know I have a -2 front sprocket on my bike and as such my fuel economy is shocking (around 80-90miles from a full tank) so I'm looking whether Isles worth changing it out.
I'm looking at a 'track day' AFAM sprocket set which is -1 at the front and +1 at the back so it will keep the same level of acceleration.
What I'm wondering is would that be just as bad or would it improve the mpg?
Re: Sprocket/Mpg ratio? - pilninggas - 19-02-17
http://www.gearingcommander.com/
Re: Sprocket/Mpg ratio? - Dudeofrude - 19-02-17
(19-02-17, 08:14 PM)pilninggas link Wrote: http://www.gearingcommander.com/
Thanks for that. Some interesting info on there, not quite sure I unsterstand it all haha but it says that my rpms are 13.33 higher than standard in any given gear so does that mean my mpg is 13% worse?
Re: Sprocket/Mpg ratio? - pilninggas - 19-02-17
(19-02-17, 08:50 PM)Dudeofrude link Wrote: [quote author=pilninggas link=topic=21883.msg253066#msg253066 date=1487531659]
http://www.gearingcommander.com/
Thanks for that. Some interesting info on there, not quite sure I unsterstand it all haha but it says that my rpms are 13.33 higher than standard in any given gear so does that mean my mpg is 13% worse?
[/quote]
not necessarily - but from my own experience it will be a little less if more revs needed for a given speed (equally gearing up results in slightly better economy for cruising at speeds near peak torque).