Join Date: Apr 2010
Location: Sunnyvale, CA USA
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Originally Posted by worldtraveller
for when i ride my road bike which is a lot.
I used to ride lots in big ring, now i learned t that it is better to just spin
so i ride in smaller ring and just spin lots and use gears from there.
When should i use by big chain ring.
When you can get a good cadence with it and can get one or more of
- Closer spacing between gears (IOW, with 12-13-14-15-16-17-18-19-21-23 in back the next gear would be closer if you were riding 53x18 instead of 39x13)
- A less noisy chain line (in the same situation 53x18 near the middle of the cassette is going to be quieter than 39x13 one cog in from the end)
- Less front shifting (in the same situation the small ring wouldn't leave you any room to speed up without being fully cross-chained and you'd want to stay in the big ring. OTOH, if you were headed for a hill where you'd need something smaller than 53x21 you might spend a short time in 39x13 before you got there and started shifting to bigger cog).
"Good cadence" may or may not be what feels best and is intensity dependent. Although I used to prefer pedaling around 80-90 RPM I found that I could ride threshold intervals on consecutive days at the same power staying over 90 RPM. 5 minute intervals work better at 100-110 RPM. At 30 seconds I'll get more speed if I'm not shifting until 110-120 RPM.
Last edited by Drew Eckhardt; 07-08-11 at 03:50 PM.