Questions tagged [di2]

Questions referring to Shimano's electronic groupsets

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4
votes
2answers
77 views

Sticky/Not fully returning ultegra r8070 brake lever

Got this used di2 equipped bike with what seemed to be just a spongy front brake. Bleeding as per manual. Still "mushy". Emptied the line and disconnected the hose. The lever just don't ...
2
votes
1answer
81 views

Can Di2 only be tested as a complete setup?

I'm having problem testing my Di2 setup. Long story short, I got a pair of used but in very good condition Dura Ace Di2 9070 brifters for a cheap price. I then bought a new Di2 cable set with external ...
2
votes
1answer
87 views

Troubleshooting Ultegra Di2

I went for a ride in Zwift, afterwards, I thought I'd check for firmware updates, there was one, I flashed it, disconnected the bike from the computer. I then swapped out a cassette, went into change ...
4
votes
2answers
3k views

Di2 left shifter not working

I got myself a bike with Shimano di2, but I am new electric gearing. I have a problem, that Front derailleur (left shifter) is not working. Clicking any of the buttons on the left shifter, does ...
1
vote
1answer
194 views

Shimano Di2 Bleed Screw problem

My bleed screw has become damaged and I need a new one. My shifter is Shimano R8070 which according to the spec, the part number should be Y00898030, the screw turned up but it is too small, as in the ...
1
vote
0answers
88 views

Is my right DI2 shifter bad? It will shift “up” but not “down”

The left shifter and front derailleur work fine. The right shifter works fine if I shift to a smaller gear; the bike does not respond if I shift to a bigger gear. I plugged into my PC and from there ...
1
vote
1answer
128 views

Di2 front ring drop down when going uphill

Di2 ultegra front ring drop down when going uphill. No pressure is applied on shifters. System works just fine on flat sections. What could be a problem?
1
vote
1answer
2k views

Di2 not responding troubleshooting

My bike was on the trainer for a couple weeks. One morning, Di2 stopped responding. No shifting No light at junction box at all charger doesn't light up orange when plugged in etube doesn't detect ...
0
votes
2answers
844 views

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

The current installation (performed by the supplier) of the junction-box (EW-RS910) results in only one port left at the levers for what's usually used for sprint or climbing shifters. This port is ...
2
votes
1answer
808 views

Can I upgrade to Synchro shifting on a 10s Di2 bike? (Ultegra 6770)

I bought a second hand bike with an existing Ultegra DI2 6770 groupset, which is a 10-speed group. I would like to upgrade the components required in order to have syncro shift on it. As far as I ...
-1
votes
1answer
86 views

Are 9150 shifters and wireless compatible with 9100 Rear Derailleur?

I’m getting Di2 for the first time and have 9150 crankset, shifters, and front derailleur. I was hoping to leverage the wireless features to - do I need to get the 9150 rear derailleur or can I settle ...
1
vote
1answer
513 views

Ultegra 6870 Di2 Synchro Shift

I have an Ultegra 6870 Di2 groupset and I would like to use synchro shift. In e-tube project, I select Customize, then Shift Mode Setting. And I have an error message telling: If SM-BRM1/SM-BRM2/SM-...
5
votes
1answer
773 views

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?

Context: I'm designing a drivetrain for a touring triple-tandem that I'd like to have a very wide gear ratio. I plan to use the Shimano Di2 derailleurs (long cage RD-M9050-SGS and 3x11 FD-M9050) to ...
2
votes
1answer
925 views

Shimano STePS Di2 Shifting with Alfine 11 - will it be ever automatic?

The Shimano STePS with Di2 and Alfine 8 received a firmware update this year, which enabled automatic shifting (it was not automatic before). Does anybody know if Alfine 11 models will receive any ...