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PostPosted: Wed Nov 21, 2012 2:41 am 
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Joined: Sun May 16, 2010 7:28 pm
Posts: 650
Post a pic of pro cycling and instantly validate your point. I like it.
Someone find me a pic of a pro on a triple crankset.


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Posted: Wed Nov 21, 2012 2:41 am 


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PostPosted: Wed Nov 21, 2012 2:15 pm 
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Joined: Tue Oct 23, 2012 5:02 pm
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Not just any pro. A pro that nobody would accuse of sucking at climbing.
I'm just saying that you don't necessarily suck at climbing because you use a smaller gear than 39/28.


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PostPosted: Wed Nov 21, 2012 5:27 pm 
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Joined: Thu Jun 17, 2010 5:03 pm
Posts: 2013
Location: San Francisco Peninsula
FWIW; I pretty much need a 28 for a five hour training ride in the mountains but hate the 11-28 on fast group rides or races. Gaps are too big, often find myself between gears. 11-25 tends to work out better in those situations.

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PostPosted: Wed Nov 21, 2012 6:07 pm 
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Joined: Mon Dec 14, 2009 6:26 pm
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I think a couple of people have mentioned the unwelcome wider gaps of the 11-28. Every choice has a compromise but doesn't the 11-28 represent a small one. How often does one get into a larger than 21 cog unless climbing something pretty nasty, when a 28 would come in handy.


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PostPosted: Wed Nov 21, 2012 6:51 pm 
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Location: San Francisco Peninsula
Terrain around here is hilly and during a fast group ride, I like to keep it in the big ring. 11-25 works better for me in those situations.

You need to experiment and find what works best for you. No right answer for everyone.

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PostPosted: Wed Nov 21, 2012 7:23 pm 
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I get you. In the big ring it would make a difference. I wasn't thinking. I like to use the big ring with the large cogs as well. Of course technically you can find the same gear without the crossover but sometimes it's easier to find the chosen gear and stay in the big ring. It feels different too.


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PostPosted: Thu Nov 22, 2012 1:59 pm 
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Joined: Sun May 16, 2010 7:28 pm
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MagnusH wrote:
Not just any pro. A pro that nobody would accuse of sucking at climbing.

I'm not accusing any pros of sucking at climbing. If alp d'huez is your weekly climb then by all means gear the hell out of it. Otherwise I maintain my stance, if you need more than 34x28 for your weekly climb, you suck at climbing. Addendum: if you need more than 39x28, you should be riding a compact crankset.


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PostPosted: Fri Nov 23, 2012 10:50 am 
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Joined: Fri Aug 10, 2012 11:54 am
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Is there anything to stop you doing a mix and match here?

By that I mean, I've just bought a 11-28 to replace my worn 11-25 (both Ultegra 6700) as I have some big sportives coming up in the Summer. I don't really use the 23 and 25 that much in normal riding so would assume the 3 joined cogs (21,23,25) have not worn as much as the bulk of the block on the old cassette.

Assuming that is the case and these 3 cogs mesh well with the new chain and new cassette parts, is there anything to stop me using that cluster of 3 with the rest of the new Ultegra cassette and just switching in the 21,24,28 as and when needed or will there be problems with wear rates across the cogs and chain that would introduce skipping if the 21,24,28 weren't used all that often (new cogs, old chain say)?


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PostPosted: Fri Nov 23, 2012 10:57 am 
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Posts: 445
Location: Russia, Moscow
That's an interesting idea, matty. I think you can just check alignment of 21t cog and splines between the two clusters and it is the same, you should be safe mixing and matching them. However, if it is not, you'll likely have issues with shifting.


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