> Gear ratios calculations are better for some situtations, however, I am concerned about MPH at a
> certain RMP while considering cassette choices
for
> an upcoming race.
You can try EasyGear (
http://www.ultimade.nl/bikepages/index.php4?page=easygear) if you're willing
to use metric values.
"Raymo853" <
[email protected]> wrote in message
news:[email protected]...
> Gear ratios calculations are better for some situtations, however, I am concerned about MPH at a
> certain RMP while considering cassette choices
for
> an upcoming race.
>
>
> "Sheldon Brown" <
[email protected]> wrote in message
>
news:[email protected]...
> > Raymo853 wrote:
> >
> > > I got the formula to calculate gear inches (crank teeth count /cog
teeth
> > > count) * wheel diameter in inches. But what would it be for say MPH
at
> 100
> > > rmp? For some reason I" am having a bad brain moment and can't get
the
> > > conversions correctly.
> >
> > MPH @ 100 RPM is one of the modes offered in my online gear calculator:
> >
> >
http://sheldonbrown.com/gears
> >
> > But the default units are Gain Ratios, which I think are a better
system.
> >
> >
http://sheldonbrown.com/gain
> >
> > Sheldon "Gain Ratio" Brown +--------------------------------------+
> > | Without deviation from the norm, | progress is not possible | -- Frank Zappa |
> > +--------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-
> > 9772 FAX 617-244-1041
http://harriscyclery.com Hard-to-find parts shipped Worldwide
> >
http://captainbike.com http://sheldonbrown.com
>