Ultegra 6700 10spd to 11spd?

harmonix1234
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Ultegra 6700 10spd to 11spd?

Postby harmonix1234 » Tue Aug 12, 2014 3:40 pm

Can I convert an ultegra 6700 hub from 10spd to 11spd simply by changing the freehub?

I want to buy an 11spd grouppo but dont want to have to buy new wheels as well.

I know I can just lace a new hub which is 11spd into back wheel but to be honest, I don't want to have to rebuild the wheel if it can be avoided.

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Duck!
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Re: Ultegra 6700 10spd to 11spd?

Postby Duck! » Tue Aug 12, 2014 9:22 pm

No. The 6800 hub is fully redesigned from the older hubs, so there's no interchangeability.
I had a thought, but it got run over as it crossed my mind.

harmonix1234
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Re: Ultegra 6700 10spd to 11spd?

Postby harmonix1234 » Tue Aug 12, 2014 11:38 pm

Thanks Duck.

dale79
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Re: Ultegra 6700 10spd to 11spd?

Postby dale79 » Wed Aug 13, 2014 9:44 am

can do it easily,

supply me the free hub and cassette and $25 and you will get one back that works perfectly..

warthog1
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Re: Ultegra 6700 10spd to 11spd?

Postby warthog1 » Wed Aug 13, 2014 11:13 am

That is a good deal by the sounds. Do you machine them down to fit the wider 11 sp cassette?

harmonix1234
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Re: Ultegra 6700 10spd to 11spd?

Postby harmonix1234 » Wed Aug 13, 2014 11:16 am

Thanks Dale, when I get my 11 speed grouppo I'll keep that offer in mind. May take you up on it.
Cheers.

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CoffsGal
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Re: Ultegra 6700 10spd to 11spd?

Postby CoffsGal » Wed Aug 13, 2014 6:35 pm

dale79 wrote:can do it easily,

supply me the free hub and cassette and $25 and you will get one back that works perfectly..


Dale, can you advise if an 11 speed cassette on your modified free hub, will have the sprockets in the same location in relation to the derailleur, as a cassette on a standard 11 speed free hub. In other words can one interchange a wheel that has your modified 10 speed free hub and modified 11 speed cassette, with a standard 11 speed wheel with standard 11 speed cassette, without adjusting the derailleur?

An issue I see with this solution, would be that one can not change the cassette without first having it modified.

For my 'Dura Ace 7850-C50' rear wheel, the only other option appears to be to replace the hub with a 'Dura Ace 9000-C24' hub, which has the same number of spokes (20 each side). Having never laced a wheel though, and the cost of the wheel hub, and the cost of the 11 speed free hub, makes this a dubious option. Hmmmm...

dale79
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Re: Ultegra 6700 10spd to 11spd?

Postby dale79 » Thu Aug 14, 2014 9:05 pm

Yes perfectly.. Here is a 7850 that's been converted..

Image

JessicaAlba
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Re: Ultegra 6700 10spd to 11spd?

Postby JessicaAlba » Mon Sep 01, 2014 6:51 pm

I'm keen on this process for my DA C24 hub. I've looked over this discussion, but not particularly impressed with the machine work to the hub.

dale79, is there any chance we could see some "naked" pics of hub assembly?
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MichaelB
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Re: Ultegra 6700 10spd to 11spd?

Postby MichaelB » Tue Sep 02, 2014 9:39 am

I sent a PM with a question over 2 weeks ago and didn't get a reply ?

Crawf
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Re: Ultegra 6700 10spd to 11spd?

Postby Crawf » Tue Sep 02, 2014 11:32 am

I think petal did a conversion on a 10s DA wheelset, maybe he can advise what was involved?

MB, you're alive!?

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MichaelB
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Re: Ultegra 6700 10spd to 11spd?

Postby MichaelB » Thu Sep 04, 2014 8:45 am

Crawf wrote:I think petal did a conversion on a 10s DA wheelset, maybe he can advise what was involved?

MB, you're alive!?


Yes, I'm still alive :D

dale79
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Re: Ultegra 6700 10spd to 11spd?

Postby dale79 » Sun Oct 05, 2014 9:48 am

Sorry didn't see you pm till today, I'm on holidays in Qld will get pics when I get back to Sydney, I have done 30 odd wheels ranging from Chinese to zipp and dura ace etc, some need the cassette touched (dura ace) some don't (Chinese free hubs and some zipp etc)

steven2018
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Re: Ultegra 6700 10spd to 11spd?

Postby steven2018 » Sun Aug 19, 2018 11:33 am

Hi dale79, I'm new to this forum and am based just outside of Sydney. Do you still modify 11 speed shimano cassettes to fit on 10 speed free hubs? If so can I please send you a cassette and money for modification?
Cheers,
Steve

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CoffsGal
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Re: Ultegra 6700 10spd to 11spd?

Postby CoffsGal » Sun Aug 19, 2018 5:38 pm

I successfully used the method linked to below to convert my Durace C50 10 speed hub to 11 speed a few years ago (maybe 2014). Has been perfect and still in use today (literally). This method doesn't require any modification to the cassette so makes for easy replacement.
https://weightweenies.starbike.com/foru ... p?t=115919

I purchased a Dremel to modify the hub (slowly and carefully), and a local engineer to lathe the freehub ($30).

lone rider
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Re: Ultegra 6700 10spd to 11spd?

Postby lone rider » Sun Aug 19, 2018 8:43 pm

I've used a file and it worked fine. Had an old wheel for a trainer bike so figured it was worth a try. No hiccups in a 1000k's so far. Cassete hasn't been touched.

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