10 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 ...
  • 4,882
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 ...
  • 652
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 ...
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 ...
  • 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 ...
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 ...
  • 110k
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 ...
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. ...
  • 24.1k
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 ...
  • 13.5k
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 ...
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, ...
4 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 ...
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 ...
  • 7,616
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:
  • 946
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 ...
  • 50.9k
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 ...
  • 151
3 votes

Garmin Edge 1030 and Di2 Connection

You need to install a D-Fly unit. Probably this one: EW-WU111 Being able to use the Garmin in rain and cold weather with gloves is brilliant. However check if you have the right components: these ...
  • 193
3 votes
Accepted

Are 9150 shifters and wireless compatible with 9100 Rear Derailleur?

The Shimano Dura-Ace 9100 series components are mechanical; the 9150 series (Di2) are electronic, so you can't mix a 9150 shifter with a 9100 derailleur.
  • 4,591
3 votes
Accepted

Is it possible to add a TT shifter to Di2 junction box?

Yes, of course, that's possible. You just plug the cables into the brifters. Peel the grip-covers forward and you'll see unused ports underneath. Those may be used for sprinter buttons or for climber ...
  • 8,203
3 votes

Should i upgrade from Skultura 400D with 105 to giant tcr advanced with ultegra di2?

My rides are generally 80kms a week usually by myself at an average of 23kms per hour with average cadence of 65. Would an aero bike make a difference? For the type of riding you are doing, aero bike ...
  • 30.1k
3 votes
Accepted

Shimano Di2 Minimum Junction Setup

According to Slowtwitch Shimano needs one junction A in the system otherwise it won't work. You can skip junction B. It may cause some interesting wiring. The 6700 series (EW6770) junction may ...
  • 1,313
3 votes
Accepted

Are there any Male to Female DI2 wires / exetensions?

No, there are not any male-to-female "extension" wires available for the Shimano Di2 E-Tube system. You can use a junction as you said, or you can use the two-port ANT module. You could also modify ...
  • 2,308
3 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 ...
  • 31
3 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 ...
  • 44.6k
2 votes
Accepted

Can shimano di2 be programmed to be automatically readjust shifting for different hub/wheel types?

Quick answer: You would need to use a PC, and you would need to make sure that the wheels had reasonably close original chain line positions for this to be possible. If not, then no, you can't do ...
  • 29.6k
2 votes

Are there any Male to Female DI2 wires / exetensions?

Extension (Male/Female) wires are now available since a few weeks. You can ask your reseller, they are not on general availability yet. I got one of them because I moved my aerobars forward and needed ...
2 votes

The best way to connect aerobars with Di2-shifters to bike w/ Ultegra 8000 Di2 and the junction box in the bar end?

Yes, you can. You can have as many SM-JC41s as you like. It's basically just a 'dumb' connection box. Each shifter has 3 ports, so are you really in need of more ports? I think your current setup is: ...
2 votes

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

Using Parallels, I was able to get the system to recognize the USB connection by going to the Parallels menu, selecting Devices > Shimano BCR2, repeatedly. After about eight times (4x on/off ...
2 votes
Accepted

Will Shimano Di2 synchro shift work with an XT (Mountain) rear derailleur with an Ultegra (Road) front derailleur on the same bike?

No, Shimano's software intentionally disallows you from setting your bike up with a mix of mountain and road derailers. Boycott-worthy, I say. It's very common for touring tandemists to wind up ...
2 votes

Shimano Ultegra CS-6800 11/32 replacement?

I think you must be referring to the new cassette on the second set if wheels. Sprocket spacing remains the same on Shimano 11 speed across generations. The new Ultegra R8000 cassette will work ...

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