New dura-ace R9100

[jeffy]

But in no scenario that I'm aware of has it made rear wheel removal easier.

have you tried removing the wheel with a DM hanger?

[notaero]

Unfortunately I discovered that the R9170 shifters only have 2 ports in the lever for DI2 cables, i.e. I cannot run climbing and sprint buttons out of the levers and will have to add an additional junction box to the assembly. (despite what the User manual shows - an image with 3 ports and the words R9170)

If this was covered earlier, apologies, but just a note for anyone going down this path.

Correction to myself: pg29 http://si.shimano.com/pdfs/dm/DM-R9150-01-ENG.pdf
"Port for remote sprinter shifter (ST-R9170 does not have this port.)"

[MoreRideTime]

@notaero, Yup, the R9170 levers do not have the special port for the "sprint" shifter buttons. I don't why Shimano chose to do this. I find these buttons to be very handy on the non-hydro setups. I know I'd miss them if I had a hydro-Di2 equipped bike. I suppose if you are handy with electronics you could somehow modify one of the SW-R600 climbers switch units to work. These units have the "brains" in them to plug into one of the normal DI2 lever ports. I envision hiding the circuit board from the climbers switch in the bars and running wires from a switch back to it and then into one of the levers.

[Ritxis]

@notaero, Yup, the R9170 levers do not have the special port for the "sprint" shifter buttons. I don't why Shimano chose to do this. I find these buttons to be very handy on the non-hydro setups. I know I'd miss them if I had a hydro-Di2 equipped bike. I suppose if you are handy with electronics you could somehow modify one of the SW-R600 climbers switch units to work. These units have the "brains" in them to plug into one of the normal DI2 lever ports. I envision hiding the circuit board from the climbers switch in the bars and running wires from a switch back to it and then into one of the levers.

Maybe it's because when you put the hydraulics in the levers, the levers are the same size as the non-hydraulic, have reduced the junction box to accommodate the connection area of the hydraulic hose.......they keep keeping the top buttons

[jeffy]

no reason (i dont think) to not use SW-R9150 in the sprint shifter position.

the SW-R9150 look pretty similar when set up

[ms6073]

That is what I did for our bikes, but the caveat is that these are stand-alone shifters, thus are more expensive and have a larger footprint than the sprint shifters. I had even thought about shedding weight on my cross bike by swapping out the Shimano ST-R785 Di2 shifters for a set of the remote shifters and TRP's now discontinued Hylex hydraulic road brake levers/calipers. Note the image below is of world tour team bike:

[ooo]

Catalog weight info update for Dura-Ace TT shift-brake hydro levers

2017-09-26 ST-R9180 weight 114 g (228/pair)
2017-11-01 ST-R9180 weight 99 g (198/pair)

[ooo]

My R9170 & Open U.P.P.E.R. Weight: ST-R9170 160g each & BR-R9170 w/ Fin brake pad 113g each

just for reference:

ST-R9170 170.2g @ r2-bike (with photo)
(340/pair=360/catalog-20g or -5.5%)

ST-R9170-L 156g @ bike-import
ST-R9170-R 155g @ bike-import
(311/pair=360/catalog-39g or -10%)

ST-R9120-L 261g @ bike-import
ST-R9120-R 264g @ bike-import
(525/pair=538/catalog-13g or -2.5%)

ST-R9100-L 183g @ bike-import
ST-R9100-R 185g @ bike-import
(368/pair=365/catalog+3g or +1%)

ST-R9150-L 126g @ bike-import
ST-R9150-R 128g @ bike-import
(254/pair=230/catalog+24g or +10%)

[lovemyway]

My R9170 & Open U.P.P.E.R. Weight: ST-R9170 160g each & BR-R9170 w/ Fin brake pad 113g each

just for reference:

ST-R9170 170.2g @ r2-bike (with photo)
(340/pair=360/catalog-20g or -5.5%)

ST-R9170-L 156g @ bike-import
ST-R9170-R 155g @ bike-import
(311/pair=360/catalog-39g or -10%)

ST-R9120-L 261g @ bike-import
ST-R9120-R 264g @ bike-import
(525/pair=538/catalog-13g or -2.5%)

ST-R9100-L 183g @ bike-import
ST-R9100-R 185g @ bike-import
(368/pair=365/catalog+3g or +1%)

ST-R9150-L 126g @ bike-import
ST-R9150-R 128g @ bike-import
(254/pair=230/catalog+24g or +10%)

My ST-R9170 levers are 161g each, guess r2-bike has some scale problems.
// EDIT: I just read the previous comment, wanted to brag how lucky I am

[sun]

Was there a consensus on how to setup the rear derailleur? I just bought a bike with 9150 and rear wheel changes are definitely much slower and require more effort when moving the RD out of the way. I move back and forth from riding indoors and outdoors and have a Wahoo Kickr. It was much easier on my 6870 setup.

[Calnago]

No consensus. Rear wheel removal can be much more difficult for existing road bikes, particularly those without a lot of clearance between the bottom bracket/seat tube and rear tire. It's a pain in the ass for sure... another thing kind of like the eating of derailleur cables in the shifters that Shimano just sort of chooses to ignore. And with the newest Di2 where you may be prevented (depending on how you have it configured) from leaving the chain on small/small for wheel removal, it can be doubly confounding. Maybe with discs and longer chainstays and through axles, it might not be as much of a problem since the wheel (I assume), can just drop out vertically and doesn't have to be pushed forward to get out the dropouts. But if you have nice tight road bike geometry, maybe with some slightly larger tires than normal (say 28's or even the most common 25's), then you could have issues with the new rear derailleur. Thanks Shimano. You're getting ever closer to the full mountainization of the road bike. When can we expect knobby street tires.

[sun]

Thanks for the info. I was making sure it wasn't just me. I recall several pages ago that people were talking about this and didn't know if there was a conclusion.

No consensus. Rear wheel removal can be much more difficult for existing road bikes, particularly those without a lot of clearance between the bottom bracket/seat tube and rear tire. It's a pain in the ass for sure... another thing kind of like the eating of derailleur cables in the shifters that Shimano just sort of chooses to ignore. Maybe with discs and longer chainstays and through axles, it might not be as much of a problem since the wheel (I assume), can just drop out vertically and doesn't have to be pushed forward to get out the dropouts. But if you have nice tight road bike geometry, maybe with some slightly larger tires than normal (say 28's or even the most common 25's), then you could have issues with the new rear derailleur. Thanks Shimano. You're getting ever closer to the full mountainization of the road bike. When can we expect knobby street tires.

[TonyM]

After all I read about RD 9100 etc... and the difficult rear wheel removal especially with discs I was a little concerned but the rear wheel change on my new BMC Roadmachine02 with DA 9170, thru-axle, 25mm Open Pavé (and fenders) is pretty much ok.

[benjaminm3]

Is that because BMC has their own hanger in place of the b-screw on the rear derailleur?

[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.