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 Post subject: DA compatibility
PostPosted: Tue Jan 13, 2004 6:14 pm 
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Searching the web i saw the following: 12 - 21 ratio of the new DA 10 sp cassette does not work with the WH-R540 wheels, see:

http://dura-ace.shimano.com/publish/con ... faq_s.html

Why is that ?? I ma not buying this combination, just curious.

Cheers
I


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 Post subject: DA compatibility
Posted: Tue Jan 13, 2004 6:14 pm 


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 Post subject:
PostPosted: Tue Jan 13, 2004 6:21 pm 
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It won't work because the largest cog, the 21 tooth has too small of a diameter to clear the hubs end at the free hub. Any thing larger will clear the tolerence.


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 Post subject: Well...
PostPosted: Tue Jan 13, 2004 6:26 pm 
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It's because the wheel design department didn't talk to the cassette design department.

Otherwise known as a big screw up! :twisted:

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 Post subject:
PostPosted: Tue Jan 13, 2004 6:26 pm 
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What about a 12-21 9 speed casette then ?? If i undertsand your explanation correctly that doesn't work either ! Right ?


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 Post subject:
PostPosted: Tue Jan 13, 2004 6:27 pm 
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Quote:
known as a big screw up!


AKA shimano ... lol


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 Post subject:
PostPosted: Tue Jan 13, 2004 7:31 pm 
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shimano website wrote:
12. Can I use the new 10-speed cassette on my current Shimano wheels?
The new 10-speed cassettes will be compatible with WH-7701, WH-7701-Carbon, and WH-R540* when used with a thin washer supplied with the aftermarket cassettes. In addition, you can only use the 12-25 &12-27 CS-7800 cassettes with the WH-7700 and WH-7700-Carbon wheels.

*Note: The 11-21 CS-7800 cassette combination will not be compatible with the WH-R540. All other ratios will work just fine.




are you refering to this? it says the 11-21? says everything else is ok.... surely that makes the 12-21 ok?

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 Post subject:
PostPosted: Tue Jan 13, 2004 8:56 pm 
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Location: Belgium
This is just something typically ShimaNO. :roll:


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 Post subject:
PostPosted: Tue Jan 13, 2004 9:01 pm 
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Quote:
are you refering to this?


No i was refering to the explanation of Superlite:

Quote:
It won't work because the largest cog, the 21 tooth has too small of a diameter to clear the hubs end at the free hub. Any thing larger will clear the tolerence


the cassette wont work because 21 tooth is too small. What about a 12-21 9 speed (instead of a 10 speed) ?
Are there other wheels/hubs that have this problem too ?


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 Post subject:
PostPosted: Tue Jan 13, 2004 10:34 pm 
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Why would you want to mount a DA cassette on a 105 wheelset?


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 Post subject:
PostPosted: Tue Jan 13, 2004 10:48 pm 
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no, as i said:
Quote:
just curious.


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 Post subject:
PostPosted: Wed Jan 14, 2004 5:40 am 
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Ivan wrote:
Quote:
are you refering to this?


No i was refering to the explanation of Superlite:

Quote:
It won't work because the largest cog, the 21 tooth has too small of a diameter to clear the hubs end at the free hub. Any thing larger will clear the tolerence


the cassette wont work because 21 tooth is too small. What about a 12-21 9 speed (instead of a 10 speed) ?
Are there other wheels/hubs that have this problem too ?


ivan, you quite clearly say that whilst searching the web you found that 12-21 doesnt work... & include the link? the link says 11-21 & says everything else is fine????

i cant see how in your origional post you were refering to superlite when he hadent posted it yet?

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 Post subject:
PostPosted: Wed Jan 14, 2004 2:11 pm 
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Sure in my original post i was refering to the explanation from the shimano website (the one you quoted) but in my second post i was refering to the explanation of superlite. He says a 21 tooth is too small of a diameter so if i get it right a 12-21 9 speed is also too small of a diameter and now i am wondering are there other wheels/hubs that have this "problem" or is it just shimano ?
Sorry about the misunderstanding !


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 Post subject:
PostPosted: Wed Jan 14, 2004 5:30 pm 
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my dad has a set ov those wheels with a 21 tooth 9 speed casette on...

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 Post subject:
PostPosted: Wed Jan 14, 2004 5:44 pm 
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Ivan wrote:
Sure in my original post i was refering to the explanation from the shimano website (the one you quoted) but in my second post i was refering to the explanation of superlite. He says a 21 tooth is too small of a diameter so if i get it right a 12-21 9 speed is also too small of a diameter and now i am wondering are there other wheels/hubs that have this "problem" or is it just shimano ?
Sorry about the misunderstanding !


I think this can always be a problem depending on the hub flange. Velomax can have this problem, same with some Spinergy wheels. I tried fitting a Tiso 11-21t cassette to a Zipp wheel once and found it touched the hub unless I put in an extra spacer, problem was the rivets for the bottom sprocket were hitting the hub.

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 Post subject:
Posted: Wed Jan 14, 2004 5:44 pm 


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 Post subject:
PostPosted: Wed Jan 14, 2004 6:08 pm 
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Quote:
my dad has a set ov those wheels with a 21 tooth 9 speed casette on...


so the problem is limited to a 10 sp cassette
I think im starting to understand the problem here ...
Im glad you all cleared that out. :)


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