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Old 08-08-17, 09:16 AM   #26
Tourist in MSN
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Location: Madison, WI
Bikes: 1961 Ideor, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad, 2015 VO Pass Hunter, 2017 Lynskey Backroad, Perfekt 3 Speed of unknown age, 1980s Bianchi Mixte on a trainer for exercise. Several others are now gone.
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Originally Posted by valeriano View Post
Faster to walk than ride with 28x28.
Huhhhh?

I am not sure what wheel size you are using, but if 700c then you would have a low gear around 27 gear inches. If you are at 3 mph (the speed I consider to be walking speed) with a 28/28 combination, then you would have a cadence of around 40. If you can push up a hill at a cadance of well below 40, I wish I had your knees.

My two derailleur touring bikes have a lowest gear of 19.2 and 20.7 gear inches, my Rohloff bike has a lowest gear of 16.5.

I set up the Rohloff bike so that it would have a cadence of 72 at 3.5 mph. Any slower and I lose the ability to maintain vertical and directional stability. If the hill is too steep for me to keep my heart rate in a safe range at that speed, I walk at a slower speed.

I occasionally pedal at a slower cadence than 72, but that is my minimum for a smooth pedal stroke.
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Old 08-08-17, 09:42 AM   #27
valeriano
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Originally Posted by Tourist in MSN View Post
Huhhhh?

I am not sure what wheel size you are using, but if 700c then you would have a low gear around 27 gear inches. If you are at 3 mph (the speed I consider to be walking speed) with a 28/28 combination, then you would have a cadence of around 40. If you can push up a hill at a cadance of well below 40, I wish I had your knees.

My two derailleur touring bikes have a lowest gear of 19.2 and 20.7 gear inches, my Rohloff bike has a lowest gear of 16.5.

I set up the Rohloff bike so that it would have a cadence of 72 at 3.5 mph. Any slower and I lose the ability to maintain vertical and directional stability. If the hill is too steep for me to keep my heart rate in a safe range at that speed, I walk at a slower speed.

I occasionally pedal at a slower cadence than 72, but that is my minimum for a smooth pedal stroke.
28x28 is a 1.0 gear ratio. With 28x23 (1.22GR) and 700x28 (the tyres I'm using) you ride at 7.8km/h at 50rpm. I walk between 7 and 10km/h.
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