It seems like you can't trust much at all these days
03-09-20, 11:33 PM
#51
Mad bike riding scientist
Join Date: Nov 2004
Location: Denver, CO
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Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
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By the way, all 13 bikes in my garage are virtually noiseless as I ride and I haven’t lubricated a jockey wheel is well over 2 decades.
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Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
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03-09-20, 11:49 PM
#52
Senior Member
Join Date: Oct 2014
Location: Portland, OR
Posts: 12,890
Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder
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Simple math. 100 RPM. 52 tooth chainring. 12 tooth pulley. In 100 revolutions, the chain travels 100 X 52 links = 5,200 links. 5200 / 12 = 433 revolutions.
Ben
Ben
03-10-20, 06:06 AM
#53
Senior Member
Join Date: Jun 2018
Location: SW Ohio
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Think about how much fitter you are for having all that drive train friction. You're lucky they didn't charge you for it
