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Old 01-22-07, 07:14 PM   #1
Sincitycycler
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Converting a Dura-Ace 12-23 to an 11-23 help!

My current CS-7800 12-23 is configured as follows:12-13-14-15-16-17-18-19-21-23t

Would it make sense to pop-out the 16t on my cassette and make it 11-12-13-14-15-17-18-19-21-23?

Can the 18t be removed or is it part of a fixed cluster? That would be cool since it would be than a standard 11-23 configuration at 11-12-13-14-15-16-17-19-21-23t.

Thanks for any advice!
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Old 01-22-07, 07:19 PM   #2
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Personal opinion - the 16 is a lot more useful than the 11. Unless you're Tom Boonen, of course. I had a 13-21 7-sp (13-14-15-16-17-19-21), and now almost same 10-sp as yours (12-25, basically the 13-21 plus 12 and 23-25). Your idea is strange, it will cause a big hole between 15 and 17, then the 18? You'd be better to pop the 18 than 16?
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Old 01-22-07, 07:39 PM   #3
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Quote:
Originally Posted by Zouf
Personal opinion - the 16 is a lot more useful than the 11. Unless you're Tom Boonen, of course. I had a 13-21 7-sp (13-14-15-16-17-19-21), and now almost same 10-sp as yours (12-25, basically the 13-21 plus 12 and 23-25). Your idea is strange, it will cause a big hole between 15 and 17, then the 18? You'd be better to pop the 18 than 16?
I'm using a compact 50/34, so the 11t is not that huge.
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Old 01-22-07, 08:57 PM   #4
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The 18 on a DA cassette is riveted. All cogs up to 16 are loose, then 17-27 are riveted together somehow depending on the cluster.

http://bike.shimano.com/media/cyclin...9830536881.pdf
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Old 01-23-07, 08:52 AM   #5
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Personal opinion - the 16 is a lot more useful than the 11.
+1
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Old 01-23-07, 09:10 AM   #6
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Even with the compact, the 16 is still probably more useful. I have the same setup on my bike, but 9 speed. I have an 11-23 for racing, 12-23 for everyday, and 12-27 for uber-climbing centuries, etc.
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