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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-20-05, 07:32 PM   #1
raygunner
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Dura-Ace 10 Pitch ~ What's The Freakin' Deal?

Dura-Ace 10 Pitch. I hear about it alot but I know squat about it so I figured I'd ask. When was it made? Why is it collectible? Let me know, I'm all ears!
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Old 05-20-05, 09:04 PM   #2
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Basically the plan was to make everything lighter by making it smaller. Rather than having 1/2" half-links, they were 10mm. It was a solution in search of a problem.

It's collectible for the same reason a Delorean is.
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Old 05-21-05, 03:14 AM   #3
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Because the owner of Shimano was heavily into cocaine?
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Old 05-21-05, 07:17 AM   #4
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Nope! here is the story as told to me just hours ago by a keirin builder. there was a Aussie who was on a board of Shimano who came up with the concept of 10mm pitch . it is a great group to have

S/F<
CEYA!

P.S.
there was two types of cogs on for the 10mm hub and regular hub.

Last edited by Ceya; 05-21-05 at 07:37 AM.
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Old 05-21-05, 07:33 AM   #5
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Just make sure you get a chain whip with it!
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Old 05-21-05, 11:29 AM   #6
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He shoulda slipped on some wet porcelain, his is head on the edge of the sink and came up with the flux capacitor...
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Old 05-21-05, 12:02 PM   #7
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Yeah to all the above. Hub threading is unique, chain is unique, cog is unique, (and yes, chain whip is unique as is, I believe, the chain breaker), chainrings are unique, etc. I rode it for a while and it was actually very smooth -- if you've ever ridden an old one-inch-pitch track bike for a lark, you see why people prefer 1/2" pitch today. The same applies to 10 mm in spades. It was superb equipment, some of the best quality Shimano ever put out. And yes, like a Delorean, it gets lots of comments from those who know. Unfortunately, it's also nigh impossible to get parts for it any longer. It's really a collectible or a "I've got it and you don't" kind of thing. At the time, a lot of riders really embraced it, but seeing 500 groups on the tracks wasn't enough to make it a commercial success. NJS approved it for parimutuel keirin racing, but by then it was too late and there wasn't enough volume in pro keirin to begin to make a difference.
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Old 05-23-05, 05:43 AM   #8
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Quote:
Originally Posted by Walkercycles
ok, lets get to the bottom of this...
the smaller chainrings are stiffer and accelerate faster. Sprinters love them because of these reasons. It was outlawed as soon as the Keirin riders in Japan discovered the advantages and Shimano ceased production at that point.

DW

Don was you responding to my comment because your answer doesn't fit with it.. The post above yours seems to fit..

S/F,
CEYA!
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