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11 speed TT upgrade

 
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kevb




Joined: 11 Aug 2010
Posts: 792

PostPosted: Fri Oct 19, 2018 11:35 am    Post subject: 11 speed TT upgrade Reply with quote

So, I've bought a set of DA9000 11 speed bar end shifters. Rear is indexed, so I need the appropriate mech for that; but the front is friction.

Question is do I need the 'long-arm' front mech or will my current 10-speed Ultegra work OK?

Anyone done a similar set up that can confirm so I don't need to set it all up to try it?

Cheers
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Jorgan




Joined: 12 Nov 2007
Posts: 17595
Location: alles was ich bin, alles was ich war

PostPosted: Fri Oct 19, 2018 12:48 pm    Post subject: Reply with quote

Do you mean long arm (cage) Rear mech? The answer to that question would be no, unless you have a large cassette on there with a sprocket over 28T, then you need the Medium GS Cage rear mech.

What tooth is your chainset?
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JaRok2300




Joined: 01 May 2014
Posts: 385
Location: Worcester, UK

PostPosted: Fri Oct 19, 2018 12:58 pm    Post subject: Reply with quote

I thought a long cage rear mech would work with any size cassette as it's just about the mount of slack it can take up. The indexing etc. is the same.

A short or medium won't work with larger sprockets as they can't take up the difference between biggest and smallest but it's fine the other way round.

I've got long cage mechs on both my bikes so that I can swap wheels or cassettes between road/tri and don't have to worry about exceeding the range.
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mattsurf




Joined: 28 Sep 2016
Posts: 584
Location: Zug, Switzerland

PostPosted: Fri Oct 19, 2018 1:07 pm    Post subject: Re: 11 speed TT upgrade Reply with quote

kevb wrote:
So, I've bought a set of DA9000 11 speed bar end shifters. Rear is indexed, so I need the appropriate mech for that; but the front is friction.

Question is do I need the 'long-arm' front mech or will my current 10-speed Ultegra work OK?

Anyone done a similar set up that can confirm so I don't need to set it all up to try it?

Cheers


The 10 speed front mech will probably work as the shifter is just a friction shift. The 11 speed chain is a little narrower, so the front mech is wider than required. My only though is that a front mech is pretty cheap so why not change it, the new R8000/R9000 front mechs are a nice improvement on the old one, and they also incorporate a cable adjustment, which is nice on a TT bike as you don`t need to fit an in line barrel adjuster
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Whisk




Joined: 09 Jun 2005
Posts: 8639
Location: London

PostPosted: Fri Oct 19, 2018 1:35 pm    Post subject: Reply with quote

If you really mean rear mech rather than front mech then your current 10-speed mech won't work because the pull ratio on the shifter will be different.
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kevb




Joined: 11 Aug 2010
Posts: 792

PostPosted: Sat Oct 20, 2018 10:14 pm    Post subject: Re: 11 speed TT upgrade Reply with quote

mattsurf wrote:
kevb wrote:
So, I've bought a set of DA9000 11 speed bar end shifters. Rear is indexed, so I need the appropriate mech for that; but the front is friction.

Question is do I need the 'long-arm' front mech or will my current 10-speed Ultegra work OK?

Anyone done a similar set up that can confirm so I don't need to set it all up to try it?

Cheers


The 10 speed front mech will probably work as the shifter is just a friction shift. The 11 speed chain is a little narrower, so the front mech is wider than required. My only though is that a front mech is pretty cheap so why not change it, the new R8000/R9000 front mechs are a nice improvement on the old one, and they also incorporate a cable adjustment, which is nice on a TT bike as you don`t need to fit an in line barrel adjuster


Cheers, that was what I had been thinking. I'll just try it I guess and see what happens, as long as the front shifter has the overall range I should be ok.

Thanks for replys all, it was a 10/11 speed hybrid set up at the front I was referring to, the rear will need to be all 11
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