Di2 wiring

Discuss light weight issues concerning road bikes & parts.
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Greatestalltime
Posts: 32
Joined: Sun Jul 02, 2017 12:47 pm

by Greatestalltime

Ok. I’ve read several of the threads on here and I appreciate them. I have a few more questions to help me decide the cable lengths.
This is for wu111 and the rs-110. Specially where to place the wu111. Can I put it in the bar? Is the downtube a better place?
The cable lengths recommended were:
350mm bar end to lever(shorter if I put the rs-110 in there?)
600mm lever to lever
1400mm to the b junction (shorter if I put the wu111 in there?)

Any tips and advice would be appreciated.

This is going in a 53 De Rosa Protos which couldn’t wait any longer for Eps to be back in stock.

cassard
Posts: 95
Joined: Wed Jan 24, 2018 12:31 am

by cassard

I just did it on a S-works Sl6 build. The customer wanted the WU111 to be hidden and wanted to use the RS-910 junction box. The best way I found to prevent clacking sound is putting the wu111 in the downtube without using the Y wire.

What I did :

From junction Box RS-910 in the handle bar (2 wires) :
- 1 wire goes to the right shifter
- 1 wire goes to the downtube connect the WU111

From the Right lever (2 wires) :
- 1 wire come from the RS-910
- 1 wire goes to the left shifter (up to you if you want to put the cable inside the handle bar)

In the downtube :
- The wire that comes from the cockpit is plugged with the WU111 and then continues to the Junction Box (B)

COCKPIT <------(dt)-------> WU111 <---(dt)-----> JUNCTION BOX (B)

An other option could be in the seat-tube between the batterie and the Junction box but I didn't tried it.

Greatestalltime
Posts: 32
Joined: Sun Jul 02, 2017 12:47 pm

by Greatestalltime

cassard wrote:
Thu Apr 19, 2018 3:44 pm
I just did it on a S-works Sl6 build. The customer wanted the WU111 to be hidden and wanted to use the RS-910 junction box. The best way I found to prevent clacking sound is putting the wu111 in the downtube without using the Y wire.

What I did :

From junction Box RS-910 in the handle bar (2 wires) :
- 1 wire goes to the right shifter
- 1 wire goes to the downtube connect the WU111

From the Right lever (2 wires) :
- 1 wire come from the RS-910
- 1 wire goes to the left shifter (up to you if you want to put the cable inside the handle bar)

In the downtube :
- The wire that comes from the cockpit is plugged with the WU111 and then continues to the Junction Box (B)

COCKPIT <------(dt)-------> WU111 <---(dt)-----> JUNCTION BOX (B)

An other option could be in the seat-tube between the batterie and the Junction box but I didn't tried it.
Thanks. This is the setup on the YouTube video, correct?
https://youtu.be/cON3w1IL_7k

CallumRD1
Posts: 85
Joined: Mon Apr 03, 2017 2:54 pm

by CallumRD1

I put my WU111 in the handlebars between the bar end junction box and the shifter. It seems to be working well there. I've had no issues with the connection dropping out or anyting like that. (I had a Y cable from the junction box to the shifters which I HIGHLY don't recommend using for interanally routed bars. It was a real pain to get it through all the right holes.)

djel
Posts: 38
Joined: Mon Apr 25, 2016 12:29 am
Location: Montreal, CA

by djel

I tied the WU111 with the Junction box B with some bubble wrap and zip ties...it's not moving.

cassard
Posts: 95
Joined: Wed Jan 24, 2018 12:31 am

by cassard

Greatestalltime wrote:
Thu Apr 19, 2018 4:03 pm
cassard wrote:
Thu Apr 19, 2018 3:44 pm
I just did it on a S-works Sl6 build. The customer wanted the WU111 to be hidden and wanted to use the RS-910 junction box. The best way I found to prevent clacking sound is putting the wu111 in the downtube without using the Y wire.

What I did :

From junction Box RS-910 in the handle bar (2 wires) :
- 1 wire goes to the right shifter
- 1 wire goes to the downtube connect the WU111

From the Right lever (2 wires) :
- 1 wire come from the RS-910
- 1 wire goes to the left shifter (up to you if you want to put the cable inside the handle bar)

In the downtube :
- The wire that comes from the cockpit is plugged with the WU111 and then continues to the Junction Box (B)

COCKPIT <------(dt)-------> WU111 <---(dt)-----> JUNCTION BOX (B)

An other option could be in the seat-tube between the batterie and the Junction box but I didn't tried it.
Thanks. This is the setup on the YouTube video, correct?
https://youtu.be/cON3w1IL_7k
the video doesn't show mutch but yes. I'll take picture tomorrow to show you

2old4this
Posts: 312
Joined: Mon Jan 13, 2014 7:26 am

by 2old4this

cassard wrote:
Thu Apr 19, 2018 3:44 pm
I just did it on a S-works Sl6 build. The customer wanted the WU111 to be hidden and wanted to use the RS-910 junction box. The best way I found to prevent clacking sound is putting the wu111 in the downtube without using the Y wire.

What I did :

From junction Box RS-910 in the handle bar (2 wires) :
- 1 wire goes to the right shifter
- 1 wire goes to the downtube connect the WU111

From the Right lever (2 wires) :
- 1 wire come from the RS-910
- 1 wire goes to the left shifter (up to you if you want to put the cable inside the handle bar)

In the downtube :
- The wire that comes from the cockpit is plugged with the WU111 and then continues to the Junction Box (B)

COCKPIT <------(dt)-------> WU111 <---(dt)-----> JUNCTION BOX (B)

An other option could be in the seat-tube between the batterie and the Junction box but I didn't tried it.
This approach works if you are going to limit (eliminate, in case of 9170) your choices for connecting climber/sprinter switches.

I know it is subjective but I find those switches very useful (so useful that I am building the latest 9170 bike with two pairs of sprinter switches, one pair on the handlebar and one pair on the horns, and a modified version of the climber switch on the handlebar. The setup uses two jc41 junctions in the bar. :smartass: )

dricked
Posts: 58
Joined: Tue Jan 09, 2018 1:57 pm

by dricked

My DA 9000 levers have 3 ports and one will only work with the sprint shifter. The new 9100 is different?

CallumRD1
Posts: 85
Joined: Mon Apr 03, 2017 2:54 pm

by CallumRD1

The Ultegra 8070 and Dura Ace 9070 hydraulic STIs only have 2 normal Di2 ports. The rim brake STIs still have the extra port dedicated for sprint shifters.

dricked
Posts: 58
Joined: Tue Jan 09, 2018 1:57 pm

by dricked

Well now that’s annoying.

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