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PostPosted: Tue Oct 29, 2013 10:56 pm 
Old School Grand Master
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Location: Norn Iron
Evening all,

Does this cassette exist -

Shimano Dura Ace 8 speed Hyperglide?

OR

does any Shimano 8 sp cassette work? Are there any varying types eg weight, quality differences?

Thanks,

Richard


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PostPosted: Tue Oct 29, 2013 11:11 pm 
retrobike rider
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Does this tell you anything (not actually read it, hence the question ;) )
http://sheldonbrown.com/dura-ace.html


EDIT to add
http://www.bikepro.com/products/freewhe ... mcass.html
?

http://fa-technik.adfc.de/Hersteller/Sh ... en.html#91
?

http://www.ebay.co.uk/itm/Shimano-Dura- ... 3ccfe60a4a


Last edited by FluffyChicken on Tue Oct 29, 2013 11:16 pm, edited 1 time in total.

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PostPosted: Tue Oct 29, 2013 11:13 pm 
Old School Grand Master
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Um,

I had a read at that previously and i cannot make much sense of it - could be me being stupid though (most likely). I need a translation!

Richard


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PostPosted: Tue Oct 29, 2013 11:29 pm 
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This :wink:


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PostPosted: Tue Oct 29, 2013 11:32 pm 
Old School Grand Master
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'This' are the hubs - but what cassette?

Richard


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PostPosted: Tue Oct 29, 2013 11:35 pm 
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The first Dura Ace Hyperglide compatible hub. Was produced to be backwards compatible with UniGlide - note the UG outer threads on the freehub body. The lock nuts are tapered to facilitate installing the 130mm hub in a 126mm spacing frame.

FH-7400 6/7 speed UniGlide (reduced diameter 31.8mm UG thread to allow 12T sprocket, 126mm spaced rear)
FH-7402 8speed UG (reduced diameter UG thread, 130mm spaced rear)
FH-7403 8speed UG standard size UG external thread, full length splines, plus HyperGlide spline and HG internal lockring thread.(130mm spaced rear)

The 7400 series share a unique attachment method. Instead of the normal bolt there is a threaded protrusion built into the freehub, with it's own unique extractor tool.



Also of note, the 7400's hubs started with Uniglide freehubs & then transitioned over to hyperglide.


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PostPosted: Tue Oct 29, 2013 11:42 pm 
Old School Grand Master
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OK,

Having re-read that again - it appear i need this -

FH-7403 8speed UG standard size UG external thread, full length splines, plus HyperGlide spline and HG internal lockring thread.(130mm spaced rear)

but i really do not understand what ^^^ that ^^^ means! Is it UG or HG? Is id DA?

Richard


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PostPosted: Tue Oct 29, 2013 11:43 pm 
Old School Grand Master
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Having re-read the above it appears i am wrong - that relates to the freehub. I have the FH 7403 - what cassette do i need?

Richard


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PostPosted: Tue Oct 29, 2013 11:58 pm 
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Found this...


Quote:
Replaced Dura Ace Cassette with HG 50 Shimano 105 8 speed 12-25 cassette and a shimano hyperglide compatible chain. All is working, shifting, threading, and feeling nicely solid with no chain skip or weird shifting


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PostPosted: Wed Oct 30, 2013 12:05 am 
Old School Grand Master
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Thanks for that - does that mean there is no such thing as a Dura Ace 8sp Hyperglide cassette?

Richard


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