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PostPosted: Thu Nov 01, 2012 3:13 pm 
rBoTM Winner
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kermitgreenkona88 wrote:
Other that that is what my friend bought it as and the fact it says Dura-Ace on the lock-ring and that it is a somewhat unusual design nothing really :(


OK, seems fair but sadly the lockring text isn't clear from the pics and I wasn't there when your friend bought it so surely I can be forgiven for thinking this looks surprisingly similar to any other Hyperglide block <smile/LOL etc>


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PostPosted: Thu Nov 01, 2012 7:50 pm 
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Sorry I may have come over a bit harsh, but the truth is in my estimation there is really nothing that sets this apart, except the facts I gave you I am beginning to wonder if he was sold a pup :shock: :( :oops:


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PostPosted: Thu Nov 01, 2012 8:15 pm 
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Lock-ring picture :wink:


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DA Lock.jpg
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PostPosted: Thu Nov 01, 2012 9:57 pm 
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FWIW, my 7401 8 speed dura ace 13-23 cassette weighs 302g, complete with all spacers and lockring. The sprockets are a different colour and texture to other shimano cassettes - kind of a matt "champagne" colour and not the shiny chrome of all the other cassettes I've seen. All spacers are alloy.

and although many people will tell you that a dura ace drivetrain needs a dura ace cassette to work properly, this isn't true. any shimano 8 speed cassette will work with dura ace shifters and mechs - the sprocket width and spacing is exactly the same. with dura ace the only things that must go together are the shifters and mechs, at least with 8 speed stuff, I think 9 was all the same, and I know nothing of dura ace with less than 8 speed.

hope this helps!


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PostPosted: Thu Nov 01, 2012 10:04 pm 
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Hi Foz

Thank you that makes perfect sense to me as that is exactly what I have :wink: :D

Cheers

Mark :D


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PostPosted: Thu Nov 01, 2012 10:15 pm 
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no problem, glad to help! I'd buy yours, but I have a hard enough time with my 13-23, so a 12-21 isn't going to be much use to me :(

GLWS!


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