New dura-ace R9100

Discuss light weight issues concerning road bikes & parts.
ipenguinking
Posts: 466
Joined: Sun Jan 09, 2005 5:14 pm
Location: Sunny So Cal

by ipenguinking

The rear wheel goes in and comes out on my 9150-equipped C60 just like any bike I’ve ever owned. The wheel is Fulcrum Speed 40 with Vittoria 25mm.


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Calnago
Posts: 5263
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

ipenguinking wrote:The rear wheel goes in and comes out on my 9150-equipped C60 just like any bike I’ve ever owned. The wheel is Fulcrum Speed 40 with Vittoria 25mm.

That’s because there’s loads of room between the rear tire and the BB lug. But there are other frames where the molded BB area is pretty massive and extends back towards the rear tire. It is primarily these situations that can experience a problem.

TurboKoo
Posts: 390
Joined: Wed Oct 29, 2008 7:55 pm

by TurboKoo

ipenguinking wrote:The rear wheel goes in and comes out on my 9150-equipped C60 just like any bike I’ve ever owned. The wheel is Fulcrum Speed 40 with Vittoria 25mm.


Same with my Scott Foil (2017)
DURA ACE C60 tubular wheels and Vittoria 25mm tires.

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wheelbuilder
Posts: 328
Joined: Wed Feb 08, 2017 2:10 am

by wheelbuilder

Calnago wrote:
ipenguinking wrote:The rear wheel goes in and comes out on my 9150-equipped C60 just like any bike I’ve ever owned. The wheel is Fulcrum Speed 40 with Vittoria 25mm.

That’s because there’s loads of room between the rear tire and the BB lug. But there are other frames where the molded BB area is pretty massive and extends back towards the rear tire. It is primarily these situations that can experience a problem.


What Calnago speaks of is a thing. I have encountered a few frames where rear wheel removal is very difficult with 9100.

ooo
Posts: 443
Joined: Sat May 21, 2016 12:59 pm

by ooo

ST-R9170 catalog weight updated:

2017-11-01 catalog ST-R9170 weight 360 g / pair
2017-12-08 catalog ST-R9170 weight 320 g / pair

(Ultegra ST-R8070 catalog weight 360 g, real weight 364,7 g)
'

Broady
Posts: 246
Joined: Thu Jan 03, 2013 5:02 pm

by Broady

ooo wrote:ST-R9170 catalog weight updated:

2017-11-01 catalog ST-R9170 weight 360 g / pair
2017-12-08 catalog ST-R9170 weight 320 g / pair

(Ultegra ST-R8070 catalog weight 360 g, real weight 364,7 g)


Approx 150g saving over R785 with the Ultegra, nearly 200g saved with DA, might treat myself in the new year.

Just the question of whether it's worth paying a bit more for the Dura Ace, anyone know how they compare ergonomically? I've heard good things about the feel of 9170 and have never been completely happy with R785 as my hands aren't huge.

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TonyM
Posts: 1707
Joined: Thu Jan 22, 2015 4:11 pm

by TonyM

I love the feel of my 9170 shifters. You really cannot tell it is an hydraulic shifter. If you are a big guy however you may prefer a bigger shifter. For small hands it is ideal imho.

hannawald
Posts: 141
Joined: Sat Dec 17, 2016 7:28 pm

by hannawald

Is there a way to "hack" E-tube so I can set 11-30 cassette with 9070 rear derailleur? It would be nice to have proper gear ratio on my Garmin..
Thank you.

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MayhemSWE
Posts: 85
Joined: Thu Mar 12, 2015 12:44 pm
Location: Stockholm, Sweden

by MayhemSWE

hannawald wrote:Is there a way to "hack" E-tube so I can set 11-30 cassette with 9070 rear derailleur? It would be nice to have proper gear ratio on my Garmin..
Unless Shimano has updated the wireless protocol it doesn't include actual cog sizes, only something similar to "2nd cog front, 5th cog rear". In order for your Garmin to translate this into actual gear ratios you need to set the size of the cassette and chainrings in the settings on the Garmin itself.

hannawald
Posts: 141
Joined: Sat Dec 17, 2016 7:28 pm

by hannawald

Thanks! I have found the settings in Garmin:) E-Tube doesn´t offer 11-30 cassette when setting synchro shifting, just 11-28 max. for 9070, but Garmin can be set for 11-30, which is more important to me..

ooo
Posts: 443
Joined: Sat May 21, 2016 12:59 pm

by ooo

Photo galleries:
ST-R9170 with hoods removed
ST-R9170 vs ST-R785

http://handsonbike.blogspot.com/2018/01 ... aulic.html
'

simplemind
Posts: 31
Joined: Mon May 04, 2015 11:06 pm

by simplemind

Tristan wrote:
Thu Mar 23, 2017 10:36 pm
I'm using the sw-r9150 switch shifters as climbing shifters under the tops of the bar. I'm playing around with different positions - the right shifter is further back and easier to use with the thumb but harder with the index finger. With one side I cut the bar tape, the other side I wrapped the tape around the shifter...I'm not sure which method works best but the cutting is probably a bit cleaner. Both shifters plug directly into the 5-port junction box.

ImageSuperSix Di2 sw-r9150 by Tristan Thomas, on Flickr
Tristan, what did you end up with as far as the shifter button position goes? It looks like you have the button pointing in the opposite direction to what the Shimano manual shows, not that it matters. If you're not thrilled, what would you change? Asking because I started the install and there are so many options, I'm getting analysis paralysis! At least I decided to shift with just thumbs! :noidea:

ooo
Posts: 443
Joined: Sat May 21, 2016 12:59 pm

by ooo

ooo wrote:
Mon Jan 01, 2018 9:16 pm
Photo galleries:
ST-R9170 with hoods removed
ST-R9170 vs ST-R785

http://handsonbike.blogspot.com/2018/01 ... aulic.html
More detailed comparison of ST-R9170 vs ST-R785:

http://handsonbike.blogspot.ru/2018/01/ ... e-di2.html
'

dricked
Posts: 11
Joined: Tue Jan 09, 2018 1:57 pm

by dricked

Is it me or do they both look like they’re the same reach? My R785 levers seem very long, even with a 10mm shorter stem I think it’s a longer reach than my 105 5800’s.


Nefarious86
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by Nefarious86

How is there a clearance issue? Image

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