Originally Posted by safe_bet
Given that my original cassette was 13-23. and the new one is 11-28 I am struggling. Seems like the 11-28 gives you the best of all worlds (you can go faster on flats and spin your legs more on hills) and there have been a few hills were it would have been nice to shift in an easier gear... I am assuming the 11-28 will be harder to shift up between gears when I am grinding up hills but on the flip side if I shift proactively like a good biker should I can spin my legs more if I need too. I guess in general the 11-28 "seems" to make more sense given I ride in mixed terrain (north east foot hills not mtns) but there obviously has to be a down side... poor shifting and more chain wear... ?? (Front chain ring is 39/53) A big thanks to everyone that has responded!
Your shifting will work just as well (probably better than your old worn out chain did). There won't any more wear, either.
With a wider range of cogs, you have bigger percentage gaps between gears, but you can go up hills easier. With close range cogs, you can change to a slightly easier or harder cog and keep your same cadence when riding on fairly flat roads. That's the main tradeoff.
A 9 speed 13-23 is 13-14-15-16-17-18-19-21-23
with these percentage differences between cogs:
The 11-28 is 11-12-13-14-16-18-21-24-28
I have a Campagnolo 13-26 10 speed set, which is exactly the same as your 13-23 with an added 26 on the end. I like having the 16-17-18-19 gears, since I'm often riding between 17-21 mph and I can get the exact gear I want there. But I would really miss the 26 cog on the steeper hills here. A 23 low gear would be difficult.
You have 53-39 chainrings, I think. Then the 11 tooth cog is pretty useless, unless you are blasting down steep hills. I can spin my 50-13 high gear up to 32-34 mph, then I coast from there. The usual 12-25 cassette would make more sense for you.
Last edited by rm -rf; 06-02-10 at 08:01 PM.