Next generation of Dura-Ace Di2

Discuss light weight issues concerning road bikes & parts.

Moderator: robbosmans

maxima
Posts: 362
Joined: Fri Oct 17, 2008 9:37 am

by maxima

I've the new 2021 DA C50 wheels and in comparsion to PCW 4540, 4550, Hunt 44 Carbon spokes, Specialized CLX 50, ENVE 4.5 and winspace wheels, the Hub by Shimano is supper smooth and momenteum is very solid. It is not the lightest 50mm but I would say as it is my preferred wheel now. The engagement and roll is so smooth :thumbup: makes CK hubs or whatever cermic bearing hubs obsolete! The wheel do not feel harsh, have set it up with Tubes with 25mm corsa and also now on tubeless GP5000 TRS.
BdaGhisallo wrote:
Tue May 17, 2022 11:10 am
Has anyone ridden the new DA 9200 wheels? What's the new freehub like? I haven't seen any mention of POE anywhere and I'm curious about that.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



mf22433
Posts: 90
Joined: Sat May 10, 2008 8:35 am
Location: Belgium

by mf22433

MisterNoChain wrote:
Sun Apr 17, 2022 12:55 pm
cajer wrote:
MisterNoChain wrote:
Sat Apr 16, 2022 9:22 pm
spdntrxi wrote:
Sat Apr 09, 2022 10:35 pm
the rotors are not new.... so it must be the 10% improvement for the calipers.
There will be new Dura Ace and Ultegra rotors later this year. (maybe it's old news, havent followed the complete topic)
Where did you hear that/what are they to look like/will improve on?
Got the info from someone working for Shimano, so I'm quite sure it's correct.
I have no extra info, he is not really allowed to say much about it.
Could it be this one?
New rotor.JPG
It is mounted on Chris Froome's bike, I found it in a recent video from Froomey.
Same look as XTR rotor but different colours.

User avatar
ryanw
Posts: 2262
Joined: Sat Apr 16, 2016 6:52 pm
Location: London

by ryanw

That would be a RT-MT800, current Ultegra rotor.
'22 SL7 S-Works - 6.22kg
'22 Crux S-Works - 6.64kg
IG: RhinosWorkshop

BdaGhisallo
Posts: 2817
Joined: Wed Mar 17, 2004 1:38 pm

by BdaGhisallo

maxima wrote:
Wed May 18, 2022 12:02 am
I've the new 2021 DA C50 wheels and in comparsion to PCW 4540, 4550, Hunt 44 Carbon spokes, Specialized CLX 50, ENVE 4.5 and winspace wheels, the Hub by Shimano is supper smooth and momenteum is very solid. It is not the lightest 50mm but I would say as it is my preferred wheel now. The engagement and roll is so smooth :thumbup: makes CK hubs or whatever cermic bearing hubs obsolete! The wheel do not feel harsh, have set it up with Tubes with 25mm corsa and also now on tubeless GP5000 TRS.
BdaGhisallo wrote:
Tue May 17, 2022 11:10 am
Has anyone ridden the new DA 9200 wheels? What's the new freehub like? I haven't seen any mention of POE anywhere and I'm curious about that.
Thanks for the feedback.

Vincentsmoox
Posts: 60
Joined: Tue Feb 22, 2022 7:33 am

by Vincentsmoox

andreas wrote:Is this red substance in the caliper joint supposed to be there on the Ultegra 8100-series calipers? Got it both front and rear.
That’s looks like brake oil leaking. Better to go to your lbs to check them before something bad happen


Sent from my iPhone using Tapatalk

mf22433
Posts: 90
Joined: Sat May 10, 2008 8:35 am
Location: Belgium

by mf22433

ryanw wrote:
Wed May 18, 2022 10:33 am
That would be a RT-MT800, current Ultegra rotor.
Ah yes indeed!

ooo
Posts: 1373
Joined: Sat May 21, 2016 12:59 pm

by ooo

Prototype rotor with SM-RT900 spider + RT-MT900 blades

Image
'

User avatar
ms6073
Posts: 4014
Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

ryanw wrote:
Wed May 18, 2022 10:33 am
That would be a RT-MT800, current Ultegra rotor.
I was thinking that as well but the vents seem to be a different size/orientation.

Image
- Michael
"Solving problems you didn't know you had in ways you probably won't understand"

User avatar
ms6073
Posts: 4014
Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

ryanw wrote:
Wed May 18, 2022 10:33 am
That would be a RT-MT800, current Ultegra rotor.
I was thinking that as well but the vents seem to be a different size/orientation.

Image
Image
- Michael
"Solving problems you didn't know you had in ways you probably won't understand"

User avatar
robbosmans
Moderator
Posts: 2013
Joined: Sun Aug 26, 2018 12:40 pm
Location: Central Belgium
Contact:

by robbosmans

Its the same?

Cdavies102
Posts: 41
Joined: Thu Jan 17, 2019 10:21 am

by Cdavies102

ms6073 wrote:
Wed May 18, 2022 4:19 pm
ryanw wrote:
Wed May 18, 2022 10:33 am
That would be a RT-MT800, current Ultegra rotor.
I was thinking that as well but the vents seem to be a different size/orientation.

Image
Image
That's because you're comparing his rotor with the 160mm rotor when his is likely a 140mm. Check a photo of a 140mm RT-MT800 rotor and compare and it's probably the same

ghostinthemachine
Posts: 698
Joined: Thu May 07, 2015 9:18 pm

by ghostinthemachine

maxima wrote:
Wed May 18, 2022 12:02 am
the Hub by Shimano is supper smooth and momenteum is very solid. It is not the lightest 50mm but I would say as it is my preferred wheel now. The engagement and roll is so smooth :thumbup: makes CK hubs or whatever cermic bearing hubs obsolete! The wheel do not feel harsh, have set it up with Tubes with 25mm corsa and also now on tubeless GP5000 TRS.
Your first Shimano hub? Most of the higher end ones are like that...

BdaGhisallo
Posts: 2817
Joined: Wed Mar 17, 2004 1:38 pm

by BdaGhisallo

ghostinthemachine wrote:
Wed May 18, 2022 5:22 pm
maxima wrote:
Wed May 18, 2022 12:02 am
the Hub by Shimano is supper smooth and momenteum is very solid. It is not the lightest 50mm but I would say as it is my preferred wheel now. The engagement and roll is so smooth :thumbup: makes CK hubs or whatever cermic bearing hubs obsolete! The wheel do not feel harsh, have set it up with Tubes with 25mm corsa and also now on tubeless GP5000 TRS.
Your first Shimano hub? Most of the higher end ones are like that...
I was more interested in the engagement of the freehub. Shimano hubs always roll super smoothly, but I much prefer the working of at DT Swiss ratchet freehub to Shimano's traditional pawl freehubs. The 9200 wheels have moved to something more akin to the DT Swiss design and that look appealing.

powpow
Posts: 34
Joined: Tue May 12, 2009 5:14 am

by powpow

ill principe wrote:
powpow wrote:
Mon May 16, 2022 8:41 pm
Since this is my first time on an electronic groupset (and disc brakes) I need to ask a possibly dumb question: do I need to take special precautions when cleaning my bike? Or can I continue just to use a low pressure garden hose, soap and sponge on the entire thing?


Sent from my iPhone using Tapatalk
You want to avoid contaminating the rotors and brake pads (with lube/oil). I still use sponge and car schampo on rotors but always before contact with any part of drivetrain (new sponge every wash). Have washed electronic groupsets w. garden hose since 2014 without any issues.
Thanks!

BdaGhisallo
Posts: 2817
Joined: Wed Mar 17, 2004 1:38 pm

by BdaGhisallo

Has anyone seen any news on when the 9200 and 8100 powermeters will be available?

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



Post Reply