Overall Ultegra Di2 6770 topic

Discuss light weight issues concerning road bikes & parts.
415brian
Posts: 52
Joined: Fri Sep 30, 2011 4:48 pm

by 415brian

I also just confirmed that all 11 speeds of a Dura-Ace RD-9070 rear derailleur will work on an otherwise complete 6770 10-speed system. In other words, the rear derailleur alone determines whether a system is 10 or 11 speed.

Video: http://www.youtube.com/watch?v=1ADH7jwGD-M

For those running the 10-speed 6770 group, upgrading to 11-speed would cost ~$355, not including the hub:

1. 11-speed compatible hub
2. 11-speed cassette (CS-6800: ~$70)
3. 11-speed rear derailleur (RD-6870: ~$250)
4. 11-speed chain (CN-6800: ~$35)

Notes:
+ I am running the latest firmware all components.
+ I did not test the RD-6870 since they're not widely available yet. However, I expect them to behave the same as the RD-9070.
+ Starbike just listed the RD-6870 as in stock (180 EU/250 US): http://www.starbike.com/en/shimano-rd-6870/

pataww2001
Posts: 10
Joined: Fri Sep 27, 2013 11:41 am

by pataww2001

415brian wrote:I also just confirmed that all 11 speeds of a Dura-Ace RD-9070 rear derailleur will work on an otherwise complete 6770 10-speed system. In other words, the rear derailleur alone determines whether a system is 10 or 11 speed.

Video: http://www.youtube.com/watch?v=1ADH7jwGD-M

For those running the 10-speed 6770 group, upgrading to 11-speed would cost ~$355, not including the hub:

1. 11-speed compatible hub
2. 11-speed cassette (CS-6800: ~$70)
3. 11-speed rear derailleur (RD-6870: ~$250)
4. 11-speed chain (CN-6800: ~$35)

Notes:
+ I am running the latest firmware all components.
+ I did not test the RD-6870 since they're not widely available yet. However, I expect them to behave the same as the RD-9070.
+ Starbike just listed the RD-6870 as in stock (180 EU/250 US): http://www.starbike.com/en/shimano-rd-6870/


this is excellent solid configuration. great to hear and confirmed. I'll be ordering parts. I still need to get the firmware updated

RichieE46
Posts: 48
Joined: Sun Aug 18, 2013 4:54 am

by RichieE46

Yea definitely great news. This flexibility is another great advantage of Di2 :-)

Pretty glad I went the Di2 route despite the slightly extra weight.

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deltree
Posts: 198
Joined: Mon Apr 23, 2012 10:21 pm
Location: London, UK

by deltree

I'm about to take the plunge into Di2 thanks to a very generous friend. Here's the proposed setup, can anybody tell me if I'm missing anything or if anything is incompatible?

Code: Select all

STIs 6770 
v
SM-EW67-A-E
v
SM-JC41
v              v           v
SM-BTR2     RD 6870     FD 6870


Thanks to 415brian I know the STIs will shift all 11spds of the RD but I only want 10 until I either change my wheelsets or upgrade my Powertap freehub body.

Also has anybody "tuned" any of the Di2 STIs? I'm thinking of sanding down the top layer of the lever and drilling a few holes before painting.

User avatar
rmerka
Posts: 618
Joined: Wed Mar 06, 2013 4:23 pm
Location: Austin, TX

by rmerka

deltree wrote:I'm about to take the plunge into Di2 thanks to a very generous friend. Here's the proposed setup, can anybody tell me if I'm missing anything or if anything is incompatible?

Code: Select all

STIs 6770 
v
SM-EW67-A-E
v
SM-JC41
v              v           v
SM-BTR2     RD 6870     FD 6870


Thanks to 415brian I know the STIs will shift all 11spds of the RD but I only want 10 until I either change my wheelsets or upgrade my Powertap freehub body.

Also has anybody "tuned" any of the Di2 STIs? I'm thinking of sanding down the top layer of the lever and drilling a few holes before painting.


The number of speeds is dictated by the RD not the shifters. If you use a 6870 RD you'll likely need to have an 11s cassette...

deltree
Posts: 198
Joined: Mon Apr 23, 2012 10:21 pm
Location: London, UK

by deltree

D'oh. Looks like I glazed over that last page.

Well more motivation to sell my Powertap and get a new set of wheels and an SRM instead! Thanks.

DartanianX
Posts: 501
Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

6870 Rear derailleur in the post. Hopefully arriving by Friday. 11 speed cassette, chain and Ultegra 6800 wheel set ordered at LBS so should have 11speed up and running on an otherwise 6770 groupset this weekend.

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Delfins
Posts: 3
Joined: Mon Dec 08, 2008 12:25 pm

by Delfins

Will it work "mtb 1x10 setup"?

EW90 (A/B)
RD 6770
SW R600
BTR2+BRC2 set
+ cables

PS: without shifters

pataww2001
Posts: 10
Joined: Fri Sep 27, 2013 11:41 am

by pataww2001

DartanianX wrote:6870 Rear derailleur in the post. Hopefully arriving by Friday. 11 speed cassette, chain and Ultegra 6800 wheel set ordered at LBS so should have 11speed up and running on an otherwise 6770 groupset this weekend.

Sent from my Nexus 4 using Tapatalk



Looking forward to see how it goes for you. keep us posted

DartanianX
Posts: 501
Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

Parts are all coming in. Just waiting for the stuff from the LBS to arrive.

Image

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DartanianX
Posts: 501
Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

So, do you all want the good news, or the bad news?

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SvenNijs
Posts: 152
Joined: Mon Dec 20, 2010 9:25 am
Location: Sydaaneeeee

by SvenNijs

DartanianX wrote:So, do you all want the good news, or the bad news?

Go with both, in the appropriate order.... :wink: :)

DartanianX
Posts: 501
Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

Bad, have to wait another day for everything else to arrive from the LBS.

Good, plug and play 11 speed!

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pataww2001
Posts: 10
Joined: Fri Sep 27, 2013 11:41 am

by pataww2001

DartanianX wrote:Bad, have to wait another day for everything else to arrive from the LBS.

Good, plug and play 11 speed!

Sent from my Nexus 4 using Tapatalk


any updates?

DartanianX
Posts: 501
Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

Yeah, all works fine! No issues whatsoever.

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