Dear Earl:
In response to my question, "What is a 'gear inch'", you were kind enough 
to clear it up thusly: 
 EW> For any given chainring/sprocket combination,
 EW> Gear Inches = chainring diameter / sprocket diameter x wheel diameter
 EW> ie:  52/12x27 = 117 gear inches
 EW>      42/24x27 =  47 gear inches
 EW>      28/32x27 =  24 gear inches
That clears it up for me and I appreciate the help.  
Later,
Steve
... Cyclist's Rule #1:  Everywhere you go is uphill and into the wind
___
 * Freddie 1.2.5 * The first full-featured QWK reader for the Mac.
--- GEcho 1.00
6:730/40)
---------------