Next generation of Dura-Ace Di2

Discuss light weight issues concerning road bikes & parts.

Moderator: robbosmans

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robbosmans
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by robbosmans

You can always swap out a freehub body, I am sure Miche will release a shimano version soon

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tyro13
Posts: 62
Joined: Mon Nov 21, 2011 7:21 am

by tyro13

robbosmans wrote:
Thu Jan 20, 2022 9:40 am
You can always swap out a freehub body, I am sure Miche will release a shimano version soon
i hope so....

TTRV
Posts: 22
Joined: Mon Mar 08, 2021 7:59 am

by TTRV

Limited gearing choice is about to disappear in the u19 and u17 ranks. It's already the case in France.

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robbosmans
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by robbosmans

Thank god! Just let them run a compact or subcompact

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robbosmans
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by robbosmans

I also just got some Praxis buzz chainrings, they are the new 10,11,12s variant, it appears they are 5g lighter than the old ones, so something has to be different

ccie6872
Posts: 286
Joined: Wed Jul 15, 2020 10:46 pm

by ccie6872

ChrisRideLog wrote:
Fri Dec 24, 2021 12:21 pm
stevec1975 wrote:
Fri Dec 24, 2021 10:10 am
Carbon-Ti have just released the DA 12 speed specific X-Carboring EVO Chainring

https://www.instagram.com/p/CX043e5suo4/
Great news! Does anybody know whether they will also release a 5 arm BCD 110 version for e.g. Quarq PMs?
has anyone seen 50/34 in stock anywhere (5 Arm BCD EVO)

e4rthm0ver
Posts: 13
Joined: Fri Dec 31, 2021 4:51 pm

by e4rthm0ver

I just fitted ultegra on Rotor aldhu + power2max PM + absoluteblack 110bcd chainrings (50/34). Shifting is fine, zero issues


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texano999
Posts: 40
Joined: Tue Nov 23, 2021 9:54 am

by texano999

do you think it i possible to install on durace 9200 the 48 31 chainring 48-31 11v instead of 50-34

ooo
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Joined: Sat May 21, 2016 12:59 pm

by ooo

Ultegra FD-R8150 vs Sram Red Quarq 46-33T video:

viewtopic.php?f=4&t=168559&p=1724615#p1724615
'

riochang
Posts: 200
Joined: Fri Feb 19, 2016 4:48 am

by riochang

Sleeprequired wrote:
Thu Dec 09, 2021 9:36 am
ms6073 wrote:
Sun Dec 05, 2021 10:09 pm
Sleeprequired wrote:
Sat Dec 04, 2021 5:46 am
When tightened down 7nm it kicks out the cage and makes it hard to align correctly.

The support bolt is just touching, it's not forcing the cage tail out at all.
I would suggest loosening the support bolt so it is not visible, loosen the mounting bolt, cant the derailleur in as far as it will go, tighten to 6-7nm. At this point, the derailleur should still be canted inward such that tightening the support bolt will move the cage into proper alignment with the chainring. If that does not happen, you might consider 'polishing' the mounting face of the braze on mount so that the derailleur can be canted even further in towards the wheel.
Ok so took it back to the bike shop and they confirmed that this braze on mount requires the -19 setting or thereabouts in order to alight correctly.

If it's 0.2mm (If) per click that's 3.8mm adjustment from 0. That's a long way off design wise.

To me that says that the derailleur is mounted too far outboard with this particular braze on mount.

It's ok at the extreme setting but ideally you'd design it to be correct without setting to -19 on the 11-52 trim.

I can see a new mount for the FD in 2022 hopefully.
Just installed R9270 to my tarmac SL7 and have exactly the same situation like you described.
The FD is sitting too far outboard, thus had to bring chain guide plate all the way inboard to max -19 setting.

Even at this setting there is still a gap of ~2mm between FD outer chain guide plate and the chain when on the large chainring, ideally there should only be 0.5~1mm gap, I couldn't bring it any closer as -19 setting is maxed out, so I canted the guide plate tail inward, but the shifting from small to big is not very smooth, the chain "catches" a bit before climb up to the big chainring.

Pretty sure that the SL7 FD braze on mount needs to be updated for the new FD design.

MagicShite
Posts: 221
Joined: Sun Jun 26, 2016 3:33 pm

by MagicShite

Found these two in the pack. Anyone knows what are these for?

Edit: found out what they were after messing with other stuff. This is an embarrassing question that shouldn't have been posted. Sorry for wasting forum space.
Attachments
IMG_20220123_164646.jpg
Last edited by MagicShite on Sun Jan 23, 2022 1:53 pm, edited 1 time in total.

stevec1975
Posts: 502
Joined: Tue Nov 24, 2009 12:37 pm
Location: London

by stevec1975

Aren’t they the plugs that fit in the Di2 connections on the battery, you take them out to install the wires

MagicShite
Posts: 221
Joined: Sun Jun 26, 2016 3:33 pm

by MagicShite

stevec1975 wrote:
Sun Jan 23, 2022 1:39 pm
Aren’t they the plugs that fit in the Di2 connections on the battery, you take them out to install the wires
Yikes. found out what they were after messing with other stuff. This is an embarrassing question that shouldn't have been posted. Sorry for wasting forum space.

gSporco
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by gSporco

riochang wrote:
Sun Jan 23, 2022 6:06 am
Sleeprequired wrote:
Thu Dec 09, 2021 9:36 am
ms6073 wrote:
Sun Dec 05, 2021 10:09 pm
Sleeprequired wrote:
Sat Dec 04, 2021 5:46 am
When tightened down 7nm it kicks out the cage and makes it hard to align correctly.

The support bolt is just touching, it's not forcing the cage tail out at all.
I would suggest loosening the support bolt so it is not visible, loosen the mounting bolt, cant the derailleur in as far as it will go, tighten to 6-7nm. At this point, the derailleur should still be canted inward such that tightening the support bolt will move the cage into proper alignment with the chainring. If that does not happen, you might consider 'polishing' the mounting face of the braze on mount so that the derailleur can be canted even further in towards the wheel.
Ok so took it back to the bike shop and they confirmed that this braze on mount requires the -19 setting or thereabouts in order to alight correctly.

If it's 0.2mm (If) per click that's 3.8mm adjustment from 0. That's a long way off design wise.

To me that says that the derailleur is mounted too far outboard with this particular braze on mount.

It's ok at the extreme setting but ideally you'd design it to be correct without setting to -19 on the 11-52 trim.

I can see a new mount for the FD in 2022 hopefully.
Just installed R9270 to my tarmac SL7 and have exactly the same situation like you described.
The FD is sitting too far outboard, thus had to bring chain guide plate all the way inboard to max -19 setting.

Even at this setting there is still a gap of ~2mm between FD outer chain guide plate and the chain when on the large chainring, ideally there should only be 0.5~1mm gap, I couldn't bring it any closer as -19 setting is maxed out, so I canted the guide plate tail inward, but the shifting from small to big is not very smooth, the chain "catches" a bit before climb up to the big chainring.

Pretty sure that the SL7 FD braze on mount needs to be updated for the new FD design.
Would adding a 1-2mm spacer on the drive side BB help?
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by Weenie


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riochang
Posts: 200
Joined: Fri Feb 19, 2016 4:48 am

by riochang

gSporco wrote:
Sun Jan 23, 2022 8:32 pm
riochang wrote:
Sun Jan 23, 2022 6:06 am
Sleeprequired wrote:
Thu Dec 09, 2021 9:36 am
Ok so took it back to the bike shop and they confirmed that this braze on mount requires the -19 setting or thereabouts in order to alight correctly.

If it's 0.2mm (If) per click that's 3.8mm adjustment from 0. That's a long way off design wise.

To me that says that the derailleur is mounted too far outboard with this particular braze on mount.

It's ok at the extreme setting but ideally you'd design it to be correct without setting to -19 on the 11-52 trim.

I can see a new mount for the FD in 2022 hopefully.
Just installed R9270 to my tarmac SL7 and have exactly the same situation like you described.
The FD is sitting too far outboard, thus had to bring chain guide plate all the way inboard to max -19 setting.

Even at this setting there is still a gap of ~2mm between FD outer chain guide plate and the chain when on the large chainring, ideally there should only be 0.5~1mm gap, I couldn't bring it any closer as -19 setting is maxed out, so I canted the guide plate tail inward, but the shifting from small to big is not very smooth, the chain "catches" a bit before climb up to the big chainring.

Pretty sure that the SL7 FD braze on mount needs to be updated for the new FD design.
Would adding a 1-2mm spacer on the drive side BB help?
well, chainline would be different from original intended design, which I guess would result in suboptimal shifting.

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