Dura-Ace R9200

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rides4beer
Posts: 690
Joined: Wed Nov 28, 2018 5:27 am
Location: VA

by rides4beer

eins4eins wrote:
Tue Jan 21, 2020 11:47 am
I use it with di2. Works perfect.

At bike24.com its also listed as 11-/12sp compatible.

https://www.bike24.de/p1271583.html
Good to know, thanks!

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AnkitS
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Location: Santa Cruz, CA

by AnkitS

Nefarious86 wrote:
Tue Jan 21, 2020 11:52 am
Went to a 10 to reduce weight... With a heavier rear mech...

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apples to oranges. axs mechs have a clutch thingy

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Alexbn921
Posts: 751
Joined: Wed Apr 10, 2019 6:39 pm

by Alexbn921

rides4beer wrote:
Tue Jan 21, 2020 2:55 pm
eins4eins wrote:
Tue Jan 21, 2020 11:47 am
I use it with di2. Works perfect.

At bike24.com its also listed as 11-/12sp compatible.

https://www.bike24.de/p1271583.html
Good to know, thanks!
It is not old 11 speed compatible. It is intended for use with 12 speed spacing 11 speed that never came to market.
Ride fast Take chances

eins4eins
Posts: 699
Joined: Wed Sep 28, 2016 11:49 am

by eins4eins

Whatever. Its working great with current 11sp road drivetrains for me and other people, so i guess you could say it is compatible.

Aeo
Posts: 668
Joined: Wed May 25, 2016 2:06 am

by Aeo

Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
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Alfus
Posts: 462
Joined: Mon Jan 21, 2019 4:34 pm

by Alfus

Aeo wrote:
Thu Jan 23, 2020 6:37 am
Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
No...Shimano abandoned this way on mtb for other resasons.

AnkitS
Posts: 1456
Joined: Wed Jan 09, 2019 5:03 am
Location: Santa Cruz, CA

by AnkitS

Alfus wrote:
Thu Jan 23, 2020 7:44 am
Aeo wrote:
Thu Jan 23, 2020 6:37 am
Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
No...Shimano abandoned this way on mtb for other resasons.
why?

BdaGhisallo
Posts: 3261
Joined: Wed Mar 17, 2004 1:38 pm

by BdaGhisallo

icantaffordcycling wrote:
Thu Jan 23, 2020 10:44 am
Alfus wrote:
Thu Jan 23, 2020 7:44 am
Aeo wrote:
Thu Jan 23, 2020 6:37 am
Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
No...Shimano abandoned this way on mtb for other resasons.
why?
I suspect it's because MTB components see more abuse than road components do and the sales volume may not have been there to justify it. XTR DI2 was expensive and perhaps many folks weren't so excited at the increase chance of incurring damage on such expensive kit.

Ritxis
Posts: 1119
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

BdaGhisallo wrote:
Thu Jan 23, 2020 11:10 am
icantaffordcycling wrote:
Thu Jan 23, 2020 10:44 am
Alfus wrote:
Thu Jan 23, 2020 7:44 am
Aeo wrote:
Thu Jan 23, 2020 6:37 am
Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
No...Shimano abandoned this way on mtb for other resasons.
why?
I suspect it's because MTB components see more abuse than road components do and the sales volume may not have been there to justify it. XTR DI2 was expensive and perhaps many folks weren't so excited at the increase chance of incurring damage on such expensive kit.
Couldn't it be what? await the departure of Dura-ace 12?.........with the XTR 12, they would not have any new developments.........

I ask, from ignorance

in the patents that are published you see "things" but nothing definitive, just ideas ...... that can see the light, or not

XCProMD
Posts: 1125
Joined: Sat Jan 26, 2008 10:25 am
Location: Cantabria

by XCProMD

icantaffordcycling wrote:
Alfus wrote:
Thu Jan 23, 2020 7:44 am
Aeo wrote:
Thu Jan 23, 2020 6:37 am
Semi-wireless Di2 also explains why there was no XTR M9100 Di2 release
No...Shimano abandoned this way on mtb for other resasons.
why?
In road applications the occurrence of excessive potentiometer noise causing constant PLL variation which in turn can damage batteries or worse,cause motor failure can remain at a level that is still considered acceptable by many users. In most cases it passes unnoticed and is experienced only as the odd faulty battery or derailleur quirk.

In MTB applications though, this problem becomes evident rather quickly and is clearly experienced as a faulty derailleur (which in any case is exactly what it is). This has put many users away from the system and i think Shimano did the right thing discontinuing the product before it tarnished further their reputation.

Or simply put: with road Di2 you can have a malfunctioning RD and not know it, with MTB Di2 you will wind out, most likely quite soon.


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madik
Posts: 308
Joined: Sun Jan 08, 2017 12:44 pm

by madik

I would assume that Shimano simple found out that they sell to little XTR di2 and stopped producing it for the current generation. di2 on MTB side had to be more agressively priced (in comparison to Road di2) to be competitive with SRAM so it was most likely financialy unsuccessful product. But they might reintroduce it in next generation with semi or fully wireless di2 since SRAM went to Eagle AXS and finally increased the prices of the top groupset.
Functionality > Performance > Weight

S6ED
Posts: 334
Joined: Sun Jun 30, 2019 1:22 pm

by S6ED

Dan Gerous wrote:
Wed Jan 08, 2020 12:08 am
madik wrote:
Tue Jan 07, 2020 11:56 pm
di2 brake is quite interesting. Its not wireless tho :) So its basically brake by a wire system. Calipers would be pretty huge and expensive since it includes some electronics, electronic motor, lots of gears to drive the hydraulic piston. Not sure how much it could be miniturise.
Probably not for non-motorized road bikes... And think of it, brakes requiring battery power and electronics can't be a good thing. If your Di2 battery dies on a ride, it sucks but it's not that bad, you survive and get a story to tell about that time you climbed 2 cols stuck in your 53x16... if you run out of battery on your brakes during a ride? You might not be able to ever tell that story! :unbelievable:
Lol. Given that my usual routes are up/down a couple of mountainous areas with speeds up to 85km/h, I don't thing I'd ride a bike fitted with wireless brakes.

S6ED
Posts: 334
Joined: Sun Jun 30, 2019 1:22 pm

by S6ED

TobinHatesYou wrote:
Wed Jan 08, 2020 1:27 am
Also electronics housed in the caliper? Calipers get burning hot to the touch...
:exactly:

ipenguinking
Posts: 743
Joined: Sun Jan 09, 2005 5:14 pm
Location: Sunny So Cal

by ipenguinking

madik wrote:
Thu Jan 23, 2020 2:39 pm
I would assume that Shimano simple found out that they sell to little XTR di2 and stopped producing it for the current generation. di2 on MTB side had to be more agressively priced (in comparison to Road di2) to be competitive with SRAM so it was most likely financialy unsuccessful product. But they might reintroduce it in next generation with semi or fully wireless di2 since SRAM went to Eagle AXS and finally increased the prices of the top groupset.
Di2's biggest advantage is fast and precise front shifting. Why complicate the system when most of new XTR users are running 1X? I'm sure many Shimano engineers believe in the same thing.

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XCProMD
Posts: 1125
Joined: Sat Jan 26, 2008 10:25 am
Location: Cantabria

by XCProMD

Again,

The problem with both XT and XTR Di2 has been the large proportion of guarantee claims due to malfunctioning RD’s.


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