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PostPosted: Sun Aug 21, 2016 3:09 pm 
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Hi there,

Just wondering if it is possible to fit an 11 speed 105 road cassette on a Deore XT 8000 wheelset?

I assume the splines are identical?

Cheers

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PostPosted: Sun Aug 21, 2016 3:12 pm 
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In short no. Shimano Mtb cassette bodies are the same as 8/9/10 road hubs, so 11 speed road cassettes are too long to fit.


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Posted: Sun Aug 21, 2016 3:12 pm 


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PostPosted: Sun Aug 21, 2016 3:28 pm 
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Cool, thanks for the reply.

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PostPosted: Sun Aug 21, 2016 6:54 pm 
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In long.. the reason a MTB 11 speed cassette can fit on the 10speed freehub body is because the larger 40T+ sprockets overhang the spokes and give clearance. A smaller geared road cassette with 28T, 30T or even 32T need the extra width (2.85mm) of the 11speed road specific freehub body.


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PostPosted: Wed Aug 24, 2016 9:00 am 
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Road cassette is not compatible with MTB cassette. too long size.


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PostPosted: Sun Aug 28, 2016 8:04 am 
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If you are committed, you can machine 2.85 from the steel freehub body...


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PostPosted: Sun Aug 28, 2016 8:15 am 
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or filed the back side of cassette body.Than it will work.


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PostPosted: Sun Aug 28, 2016 8:44 am 
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And watch as your rear mech destroys itself and the rear wheel.....


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PostPosted: Sun Aug 28, 2016 9:10 am 
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ultimobici wrote:
And watch as your rear mech destroys itself and the rear wheel.....


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Not true, done it plenty of times. You just have to ensure you have the space to do so on the wheelset you intend on using.

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PostPosted: Sun Aug 28, 2016 9:17 am 
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Nefarious86 wrote:
ultimobici wrote:
And watch as your rear mech destroys itself and the rear wheel.....


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Not true, done it plenty of times. You just have to ensure you have the space to do so on the wheelset you intend on using.

Doesn't look like there is enough material to allow it on this wheelset, does it?
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PostPosted: Sun Aug 28, 2016 9:21 am 
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Machine it out of the casette then ;) more than one way to do it.

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PostPosted: Sun Aug 28, 2016 9:38 am 
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Nefarious86 wrote:
Machine it out of the casette then ;) more than one way to do it.

Problem is, while you may be able to fit the cassette on to the wheel, the largest sprockets are not large enough to allow sufficient clearance for the rear mech. MTB systems are designed to have the largest sprocket (40/42/46T) overhang the same vertical plane as the edge of the hub body. If you are using a 105 cassette the 32 is highly unlikely to be large enough to place the mech low enough to clear safely.

I can see the point of using this hack to make an existing pair of old wheels usable with 11 speed. It is another thing entirely to do it to use a new product when there are better options around. This is a wheelset that is optimised for MTB use. It has a pressure restricted rim as well as not being road 11 compatible. In short a waste of time doing anything to.


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PostPosted: Sun Aug 28, 2016 12:47 pm 
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Does that mean any MTB 10 speed wheel can have an 11 speed MTB cassette ?


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PostPosted: Sun Aug 28, 2016 1:03 pm 
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Yep


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PostPosted: Mon Aug 29, 2016 12:55 am 
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A good friend rode 11 speed Ultegra cassettes on his XTR wheels that have an 8/9/10 freehub body. He had the material machined off the back of the cassette. He raced cyclocross on this setup at a very high level. Yes the derailleur gets closer to the spokes than intended. But if you keep it tuned you're fine. It was an 11-28 cassette.

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Posted: Mon Aug 29, 2016 12:55 am 


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