11 speed drive train 10 speed wheels

Rude80
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11 speed drive train 10 speed wheels

Postby Rude80 » Wed Nov 01, 2017 2:53 pm

Hi all

First time post so go easy!

Im really keen to keep using my 10 speed wheels which have CK Classic hubs on my new 11sp clad roadie. CK dont do 11sp conversion kits for the Classics, and they dont do Campag Freehub bodies either.

I found a solution as per this link (Lasco Concepts) where an 11sp cassette is machined to fit a 10sp hub. Im not keen on running the cassette with 10 cogs. Does anyone know of a Lasco Concepts type solution locally in Australia, or even Melbourne?

http://darkspeedworks.com/blog-11speed.htm

APologies if this topic has been flogged - send me links to relevant threads if it has.

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trailgumby
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Re: 11 speed drive train 10 speed wheels

Postby trailgumby » Wed Nov 01, 2017 5:49 pm

Not sure if I've read your comment right, but you will still have all 11 gears on the back.

Lasco Concept is able to modify many 11-speed Shimano and SRAM cassettes (except SRAM Red one-piece cassettes) with a 25T minimum large cog. Precision machining of the cassette is done on a lathe, a tiny amount of material is carefully removed from the back the largest cog carrier. The result is that you get perfect Shimano or SRAM shifting with the use of all 11 cassette cogs on your 11-speed drivetrain.


I'd go with this.

The alternative is to machine a small amount off the right side edge of the left hand lip of the CK freewheel, but this will be much more difficult, or to replace and relace with a new rear hub.

Rude80
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Re: 11 speed drive train 10 speed wheels

Postby Rude80 » Wed Nov 01, 2017 8:44 pm

Was just wondering if there was any one offering a similar service in melbourne. Machining the cassette definitely sounds like the way to go.

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Duck!
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Re: 11 speed drive train 10 speed wheels

Postby Duck! » Wed Nov 01, 2017 11:14 pm

The small inconvenience is that you have to do it every time you replace the cassette.

The other option is to run with a wall-climbing Shimano HG800 (non-series Ultegra-level) 11-34 cassette with R8000 Ultegra rear derailleur. The back of the cassette is dished out, so it fits on a regular 8/9/10-sp. hub. It is for this reason it has its own model designation rather than being a part of the R8000 cassette range.

trailgumby wrote:The alternative is to machine a small amount off the right side edge of the left hand lip of the CK freewheel, but this will be much more difficult

If not plain impossible.... The lack of Campagnolo-type freewheel body option, which is longer than the Shimano 8/9/10-sp.-type, suggests the possibility that the "shoulders" at the base of the splines sit only slightly proud of the hub shell flange, leaving no room to shave off the necessary 1.85mm.
I had a thought, but it got run over as it crossed my mind.

eeksll
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Re: 11 speed drive train 10 speed wheels

Postby eeksll » Thu Nov 02, 2017 9:54 am

If you just want to use your nice wheels, another possible option, if you don't use the 11 tooth cassette cog is to just remove it and get a 12 tooth lock ring. You might even need the 12 cog from a donor cassette. Probably need to find an extra spacer too (maybe all from a donor cassette).

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trailgumby
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Re: 11 speed drive train 10 speed wheels

Postby trailgumby » Thu Nov 02, 2017 10:07 am

Duck! wrote:The small inconvenience is that you have to do it every time you replace the cassette.

The other option is to run with a wall-climbing Shimano HG800 (non-series Ultegra-level) 11-34 cassette with R8000 Ultegra rear derailleur. The back of the cassette is dished out, so it fits on a regular 8/9/10-sp. hub. It is for this reason it has its own model designation rather than being a part of the R8000 cassette range.

trailgumby wrote:The alternative is to machine a small amount off the right side edge of the left hand lip of the CK freewheel, but this will be much more difficult

If not plain impossible.... The lack of Campagnolo-type freewheel body option, which is longer than the Shimano 8/9/10-sp.-type, suggests the possibility that the "shoulders" at the base of the splines sit only slightly proud of the hub shell flange, leaving no room to shave off the necessary 1.85mm.

Excellent idea ... and good point. For the freehub machining option, do you know how much would be required? The figure of 1mm is floating around in my (empty) head, but I'm not certain of it. :?

li2099
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Re: 11 speed drive train 10 speed wheels

Postby li2099 » Thu Nov 02, 2017 10:50 am

Maybe this might help:
Image

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Duck!
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Re: 11 speed drive train 10 speed wheels

Postby Duck! » Thu Nov 02, 2017 1:44 pm

^^ Exactly. The difference in spline length between 8/9/10-sp. & 11-sp. is 1.85mm..
I had a thought, but it got run over as it crossed my mind.

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trailgumby
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Re: 11 speed drive train 10 speed wheels

Postby trailgumby » Thu Nov 02, 2017 9:48 pm

Yep, that's rather a lot of excess meat to find on a 10s hub. My 11S rear wheel came with a 1mm spacer. Some of the difference must have been made up at the other end.

wicksey
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Re: 11 speed drive train 10 speed wheels

Postby wicksey » Fri Nov 03, 2017 10:59 am

I machined 1.8mm out of my 11s cassette to fit on a 10s hub. Easy if you know a machinist.


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