9 votes

The pulley is not close enough to the largest sprocket even when b-screw is all the way out

Something seems unconventional with the angle of the connecting link from the rear derailleur to the frame attachment point. It appears to be pointing up from the frame going back to the rear ...
Ted Hohl's user avatar
  • 6,142
8 votes
Accepted

Campagnolo EPS vs Shimano Di?

I'll declare an interest in that my company is the senior (Main) Technical, Service and Warranty Centre for Campagnolo in the UK - but having said that. the Service Centre work that we do for ...
Graeme's user avatar
  • 787
8 votes
Accepted

Are there any electronic shifters that decide front/back for you?

SRAM eTap has a mode for this. It’s called Sequential Shift Mode: Sequential Shift Mode simplifies the shifting experience by automatically controlling the front and rear derailleur as you upshift or ...
Michael's user avatar
  • 27.4k
7 votes

Trek Madone SLR Di2

Possibly the bike has a cassette size that the Dura-Ace Di2 rear derailleur does not support. The current DA RD-R9150 (short cage) rear derailleur has a max low sprocket size of 30 teeth whereas the ...
Argenti Apparatus's user avatar
7 votes

Are there any electronic shifters that decide front/back for you?

The Shimano di2 system does this if you want. Using their app you can program the buttons to sequential shift 2, which I am using. You can choose where the computer shifts the front chainring and ...
Ross Millikan's user avatar
6 votes
Accepted

Ultegra 6870 Di2 Synchro Shift

It is possible to upgrade your groupset to be Syncro-shift compatible. All you need is the new BT-DN110 battery. Once you have the new battery, you just need to update all the firmware, then set it to ...
Carbon side up's user avatar
6 votes

Is anyone able to connect Shimano Di2 SM-BCR2 to Windows inside VirtualBox on Mac OSX?

A late answer, but perhaps it helps some people. I used Vmware and not VirtualBox. However: I had to disconnect and connect the usb port in VMWare, even though Windows noticed that usb was connected ...
Pullie's user avatar
  • 193
6 votes
Accepted

Is the EW-SD50 connector exclusive to Shimano?

As far as I know it's a completely proprietary Shimano thing. When they break you buy a new complete cable of the correct length. Even if there were a hacky solution, the wires inside are tiny and ...
Nathan Knutson's user avatar
6 votes

Can I change small chainring to 30T with a 50T large ring on DI2? The mechanic says yes, just the shifting would be a tad slower on front derailleur

Presuming it's got one of the very few cranks that has any ability in terms of chainring mounting to go from 50/34 to 50/30, the first challenge is the ramping on the 50 won't be located with a 30 in ...
Nathan Knutson's user avatar
5 votes
Accepted

What parts do I need to use Di2 wireless shifting on a road bike

You require these items, all DI2 compatible: rear derailleur mechanism di2 controller box (normally strapped to the bottom of your stem) di2 brifters, or di2 shift buttons that strap to your ...
Criggie's user avatar
  • 124k
5 votes

Can I use Shimano's Di2 e-tube project software to do a custom lock out of additional small sprockets while in the small chainring?

My mountain bike doesn't have Di2, so this answer is based on my road bike Di2 experience.. 1) Whether there are options like 44/33/22 in the crankset dropdown, and The e-Tube project software ...
Terry Seidler's user avatar
5 votes

Di2 front ring drop down when going uphill

The general reason it might drop when climbing but not the rest of the time is that one of the jobs done by the front derailleur is keeping the chain from falling off by having the inner cage ...
Nathan Knutson's user avatar
5 votes

Shimano Dura Ace 12 speed to 11 speed Di2 shifter compatibility

Nobody has tried yet, but it's likely that some people will, one of them being Terry at Bettershifting.com. As background for other readers, the Di2 system battery contains the central processor. ...
Weiwen Ng's user avatar
  • 31.3k
5 votes

Shimano Dura Ace 12 speed to 11 speed Di2 shifter compatibility

From what I can see, the answer is no, at least directly. Shimano has made a new standard for the E-tube wire which is thinner and sleeker, but also has a new, smaller connecter. The new cable ...
MaplePanda's user avatar
  • 15.5k
5 votes
Accepted

How to reattach DI2 battery mount inside downtube of Canyon Endurace?

The main reasonable plan in your situation is just to do it the way it's intended to be done and pull the bottom bracket. Shimano press fit (and really all press-fit) bottom brackets are prone to ...
Nathan Knutson's user avatar
5 votes

Updating Shimano R8000 chainset from 50/34 to 50/39

If you don't need the 34/28 combination for climbing, you can switch to a tighter cassette such as an 11-25 or even an 11-23 and get more gears in the 50/16-17-18-19 range. You could then stay on the ...
Andrew Henle's user avatar
  • 10.5k
5 votes
Accepted

Upgrading a 105 R7000 to 105 di2 R7100

Shimano has a pretty good compatibility chart. These things are "incompatible" according to the chart 11/12-speed drivetrain, I guess that should be clear, so the rear mech won't deal with ...
DoNuT's user avatar
  • 4,431
4 votes

Sticky/Not fully returning ultegra r8070 brake lever

I had a similar issue with the right lever on a customer's bike after installing some new handlebars. I found the issue to be the bolt for the handlebar clamp was too tight; I backed off the 5mm bolt ...
Retrauxfit's user avatar
4 votes
Accepted

Can Di2 only be tested as a complete setup?

Okay problem solved. Apparently the NOS cable set that I bought came with an SM-EW90-A with really old firmware. After installing E-Tube Project v3.4.5 and restarting my laptop, I was able to update ...
Sir Christopher McFarlane's user avatar
4 votes
Accepted

Shimano Dura Ace 12 speed to 11 speed Di2 shifter compatibility

Update December 23, 2021 Shimano have given me a media bike to use for a month, so I thought I'd connect some of my old levers, to prove what I wrote below. I first disconnected the front derailleur, ...
Terry Seidler's user avatar
4 votes

How to reattach DI2 battery mount inside downtube of Canyon Endurace?

I did the same thing. Take a deep breath and don’t get frustrated. Get the BB at eye level and pull the plastic cover off. Get a very bright light so you can see well inside. Use something pointed in ...
Randy's user avatar
  • 41
4 votes

Ultegra Di2 rear shifting randomly stops working

I can't comment about Di2, but when the symptoms you describe arise in an electronic circuit between two boards, there is seldom anything wrong with the boards. The problem is invariably a poor ...
Sam7919's user avatar
  • 9,112
4 votes

Swapping a 12 speed 11-30t to 11-34t cassette Ultegra

You need to ensure your rear derailleur has the capacity and maximum cassette sprocket for the increased cassette - in this case you are going from a capacity of 36 to 40. I doubt any road derailleurs ...
mattnz's user avatar
  • 50.5k
4 votes

Updating Shimano R8000 chainset from 50/34 to 50/39

I have not tried it myself, but I would advice against doing it for the following reasons: You have an expensive high quality groupset that is engineered to perform very well when within specs. Going ...
olliebulle's user avatar
  • 4,109
4 votes
Accepted

Feasibility of upgrading a recent bike from a mechanical to an electronic groupset

On the technical feasibility: Note on brakes: most current electronic groupsets are provided for hydraulic disc brakes, so obviously, a frame designed for rim brakes won't work (Ultegra is for ...
Rеnаud's user avatar
  • 20k
3 votes
Accepted

Are all rear DI2 shifters / derailleurs / internal gear hubs interchangeable?

Looks like Shimano provides a handy guide: https://bike.shimano.com/en-EU/e-tube/project/compatibillity.html source Posted here since Shimano is already deleted it:
tir38's user avatar
  • 1,058
3 votes

Shimano Di2 Bleed Screw problem

which spec are you looking at? source/link? I cannot find any reference to that part number online. the correct part number is Y-0C6-98030, which is two characters away from your non-existent part ...
thelawnet's user avatar
  • 4,230
3 votes
Accepted

Di2 not responding troubleshooting

I've borrowed a charger from a bike shop nearby and it was my charger that was dead. Not sure how the battery drained itself completely in the first place but I charged the system and it came back to ...
Val F.'s user avatar
  • 141
3 votes

Di2 left shifter not working

I've heard of loose connections between the shifters and their cables causing this sort of issue. In one case in particular, the connector didn't latch properly and the bar tape pulled it out, so it ...
Chris H's user avatar
  • 58.9k
3 votes
Accepted

Troubleshooting Ultegra Di2

Turns out that an unnoticed connection from the e-tube app on my ipad blocks any type of connection via the e-tube app on my laptop, charging, or usage generally. So after you've checked all the ...
unn's user avatar
  • 151

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