Cassette choice - 11-23 v 11-28

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Shpox
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Joined: Wed Feb 08, 2012 12:54 am
Location: Brisbane, Queensland.

Re: Cassette choice - 11-23 v 11-28

Postby Shpox » Sat Jan 26, 2013 7:36 pm

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. :mrgreen:

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warthog1
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Joined: Wed Jul 25, 2012 4:40 pm

Re: Cassette choice - 11-23 v 11-28

Postby warthog1 » Sun Jan 27, 2013 9:42 am

Shpox wrote:Simple as that. Hills? 11-28 Flat? 11-25. :mrgreen:


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
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Joined: Thu Feb 24, 2011 3:40 pm
Location: Brisbane

Re: Cassette choice - 11-23 v 11-28

Postby jasonc » Sun Jan 27, 2013 10:55 am

warthog1 wrote:
Shpox wrote:Simple as that. Hills? 11-28 Flat? 11-25. :mrgreen:


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
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