You are reading a single comment by @okwithmydecay and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@okwithmydecay
I have brakes and am no hurry to take them off, but would like to learn to brake just using the pedals.
With 172.5 crank arm length and 700x28c tyres, the Rabbit calculator gave me 70.2GI for 42/16 and 71.4 for 48/18, so right you are a difference of 1.1GI or so.
Sounds like 42/16 is the better bet given I already have a 42T chain ring and it's slightly easier on the pedaling.