Cassette choice - 11-23 v 11-28

[Shpox]

I live in a very hill area. A 50km ride will incur ~ a 730m elevation. I run 11-28.

On the flats, 11-25 would be a bit better suited. It's not that I don't notice the gear changes with 11-28 on flat, but rather, you'd like them to be wider so you can get on the gas quicker.

Simple as that. Hills? 11-28 Flat? 11-25.

[warthog1]

Simple as that. Hills? 11-28 Flat? 11-25.

I probably agree with that, but the 11-28 is still not that bad on the flat;


11-12-13-14-15-17-19-21-23-25,
11-12-13-14-15-17-19-22-25-28

The bottom 5 cogs are all a straight 1 tooth step where you need it. On the big ring when the speeds are up on the flat, it is really only those bottom 5 that need to be close, as the wind resistance approaches the limit of your power output.
the bottom 3 shifts, where it is 3 teeth vs 2 teeth, is reasonably easy to ride around and its good to have the bigger 22 and 25 that enables you to stay in the big ring longer. I don't like to cross chain big-big too much so try to avoid the 28 on the big ring.
The 28 in the small ring is great to give the legs a rest on a long climb, so for me is the only way to go for climbing.

[jasonc]

Simple as that. Hills? 11-28 Flat? 11-25.

I probably agree with that, but the 11-28 is still not that bad on the flat;


11-12-13-14-15-17-19-21-23-25,
11-12-13-14-15-17-19-22-25-28

The bottom 5 cogs are all a straight 1 tooth step where you need it. On the big ring when the speeds are up on the flat, it is really only those bottom 5 that need to be close, as the wind resistance approaches the limit of your power output.
the bottom 3 shifts, where it is 3 teeth vs 2 teeth, is reasonably easy to ride around and its good to have the bigger 22 and 25 that enables you to stay in the big ring longer. I don't like to cross chain big-big too much so try to avoid the 28 on the big ring.
The 28 in the small ring is great to give the legs a rest on a long climb, so for me is the only way to go for climbing.

at least sram have it right. last 3 on the shimano 11-28 are 21-24-28