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PostPosted: Mon Sep 30, 2013 12:54 pm 
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Joined: Mon Apr 16, 2012 7:46 pm
Posts: 5
Hi WW!

I've got a nice wheelset based on classic King hubs. Since Chris King does not offers 11speeds freehub upgrade for this particular hub, I was wondering if it was possible (to the best of your knowledge) to transform a 11 speeds cassette into a 10 speed cassette by removing one cog and adding a proper width spacer.

If I use 11 speeds shifters (ultegra 6800) and I adjust the limits screws of my 11 speeds rear mech, I should be fine, right?

I made a little graph to compare the widths 11 speeds, 10 speeds and 11 minus 1 speeds cassettes
11 speeds cassette minus one cog on 10 speeds freehub
Image

inb4: transforming 11 speeds to 10 speed is stoopid. I've got my reasons.

Thanks for your inputs!


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PostPosted: Mon Sep 30, 2013 2:02 pm 
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Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1520
Location: Welland, Ontario
Math looks fine to me, so I don't see why not.

For safety I'd be having a spare last click to the small sprocket, rather than the other end of the cassette.

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PostPosted: Mon Sep 30, 2013 2:08 pm 
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Joined: Mon Apr 16, 2012 7:46 pm
Posts: 5
bikerjulio wrote:
Math looks fine to me, so I don't see why not.

For safety I'd be having a spare last click to the small sprocket, rather than the other end of the cassette.


Yeah I could also add two small spacers at each end. The 2,54mm spacer is a regular 9speeds cassette spacer.


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PostPosted: Mon Sep 30, 2013 2:13 pm 
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Joined: Sun Apr 25, 2010 6:29 am
Posts: 35
You can do that, but if you are using a Shim Cassette the 2nd to the last cog doesn't have the groves for the lockring to get a good bite on.

I ran my 7900 cassette with the new DA until I bought a new set of wheels and it worked just as well with 10 cogs as it did with 11.


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PostPosted: Mon Sep 30, 2013 2:52 pm 
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Joined: Mon Apr 16, 2012 7:46 pm
Posts: 5
Ceebers1 wrote:
You can do that, but if you are using a Shim Cassette the 2nd to the last cog doesn't have the groves for the lockring to get a good bite on.

I ran my 7900 cassette with the new DA until I bought a new set of wheels and it worked just as well with 10 cogs as it did with 11.


I would probably remove a middle cog; 16t probably.


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PostPosted: Mon Sep 30, 2013 6:39 pm 
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Joined: Thu Jun 09, 2011 4:10 pm
Posts: 431
Works fine. I did this with a PG-1170 cassette, and removed the 16T cog, and moved the spacer from the 16T cog to the inside of the cassette. The 15-17 shift isn't as smooth as it could be, but it works pretty well. FWIW, I'm using red 22 shifters - spacing for shimano should be the same though.

I plan on picking up another wheelset soon, but this is a reasonable bridge until then.


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PostPosted: Tue Oct 01, 2013 12:45 am 
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Joined: Mon Apr 16, 2012 7:46 pm
Posts: 5
aaric wrote:
Works fine. I did this with a PG-1170 cassette, and removed the 16T cog, and moved the spacer from the 16T cog to the inside of the cassette. The 15-17 shift isn't as smooth as it could be, but it works pretty well. FWIW, I'm using red 22 shifters - spacing for shimano should be the same though.

I plan on picking up another wheelset soon, but this is a reasonable bridge until then.


Thanks!!!


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PostPosted: Tue Oct 01, 2013 4:59 am 
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Joined: Sun Apr 25, 2010 6:29 am
Posts: 35
gonz0 wrote:
Ceebers1 wrote:
You can do that, but if you are using a Shim Cassette the 2nd to the last cog doesn't have the groves for the lockring to get a good bite on.

I ran my 7900 cassette with the new DA until I bought a new set of wheels and it worked just as well with 10 cogs as it did with 11.


I would probably remove a middle cog; 16t probably.


-Ah ok, I see what you are saying.


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