Interesting discussion indeed. With my QB I've settled on a single 42t chainring with a WI 17/19 on one side and a WI 16t on the flip for faster club rides. That gives me gearing of 60, 67, and 71 gear inches. 90 percent of my riding is in the 42/17 gear, but it's nice to have the other options. I would like to go up to around 75 inches for the fast Tuesday night summer club rides, but that would entail a chainring swap.
Dr. Bill On Dec 8, 10:45 pm, CycloFiend <[EMAIL PROTECTED]> wrote: > on 12/8/08 8:49 AM, Patrick in VT at [EMAIL PROTECTED] wrote: > > > > > I don't consider myself a masher, and anything less than a 70 inch > > gear ratio is a real drag for me on ss road rides, especially if I'm > > riding fixed and/or for distance. > > > What kind of cadence do you have to spin to sustain a moderate pace, > > say 15mph, with a 60 inch gear? Personally, intense spinning wears me > > out much, much faster than powering up hills. > > After building up my first fixed-gear, I recorded a couple of points of > reference: > > Fixed Gear Speeds at Specific Cadences > GEARING Revolutions Per Minute - Speed > > Parasonic w/ Speedblends > 42 x 15T > w/ 700x32c tires = 75g" 60 - 13.5 mph, 80 - 18.0 mph, 100 - 22.5 mph, > 120 - 27 mph > > Dawes w/ Conti's > 42 x 16T > w/ 700x25c tires = 69g" 60 - 12.4 mph, 80 - 16.5 mph, 100 - 20.6 mph, > 120 - 24.7 mph > > Quickbeam Gearing > 40 x 18T/16T/15T/14T > w/ 700x32c tires = 60 - 67.5 - 72.5 - 77g" @90 rpms: 16.1 mph - 18.1 mph - > 19.3 mph - 20.7 mph > > AASHTA - From Sheldon's Gear Calculator (pull down menu, after "Meters > Development")http://www.sheldonbrown.com/gears/ > > His advice for gearing selection still is the most cogent ever given: > "low enough that I can make it up the hills where I usually ride, but high > enough that I can go reasonably fast down the other side." > > Oh - Gino made a vid once, too:http://vimeo.com/1381858 > > - Jim > > -- > > Jim Edgar > [EMAIL PROTECTED] > > 2009 Current Classics Calendar - Now Available to > Order!http://www.cyclofiend.com/calendar --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
