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Does this Shimano Di2 make sense or can it be improved?

by kimmetje
Sun, Dec 30, 2018 20:05
6

Hello, 

I am hoping people familiar with Shimano's Di2 system can help me out. I'm trying to come u with the cleanest setup for my bike. An Orbea Orca Aero Disc (size 55). 

At the moment I have a Junction A stuck underneath the bar-stem which I would like to move to the frame internally. I also have a Wireless Unit EW-WU111 which we weren't able to place due to a missing cable. 

My thinking was when I next bring my bike to the local bike shop for maintenance to ask them to optimise the setup. My thinking was to do as follows and I was hoping someone could confirm or correct my setup to make sure it works well:

Have the levers connected to via an EW - JC130 junction (the 1 x 450 mm, 1 x 350 mm dimension one), and then route that inside the frame to connect to the EW-WU111, and connect that via a 150mm cable to the EW-RS910 in-frame.

Is that set-up correct or do you think I am missing a trick?

Thanks for your help!     

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

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6 comments

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Pilot Pete | 6 years ago
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My Bluetooth sender is in the frame. Not an issue. Just make sure you wrap it in a bit of bike packing foam with a cable tie or something - if you leave it loose it may rattle around. I did this with it and the junction B on two bikes and have not suffered a rattle!

PP

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kimmetje | 6 years ago
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Thank you for the feedback! Feeling more reassured about the objective!

My intention is indeed not to place it on the bars but really in the frame where there is a slot foreseen for the Junction there, even though the bars I got actually are neatly foreseen for internal routing. 

Sounds good though for the putting the internal wifi bit inside the frame! My thinking is to put just before the junction A and keep it all nice and tidy there. 

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number9dream | 6 years ago
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Although the instructions for the wireless unit suggest it needs to be outside the frame I just put mine inside the bottom bracket area and I've never had any issues with it connecting to my garmin. 

+1 for the bar end junction though you need bars with the relevant holes in for the cable routing 

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maviczap replied to number9dream | 6 years ago
1 like

number9dream wrote:

+1 for the bar end junction though you need bars with the relevant holes in for the cable routing 

For absolute neatness, yes, it's nice to have all the cables routed through the bars, but you can just drill the end of the bars near the end and run the cables under the bar tape. It's only a small hole and won't affect the structural strength of the bar.

There's a YouTube video on how to do this, especially as very few alloy bars have internal routing, nor the cable hole at the end. Only Shimano Pro bars are set up for the bar end junction box, but it's not essential to use their bars

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maviczap | 6 years ago
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I got rid of the stem junction box, by using the bar end junction. You can bridge across the shifters with one long cable, then another to the bar end and then a long cable from the junction to the internal junction connector in the frame. This way you only have one cable leaving the bars into the frame.

http://Shimano Dura Ace Conector RS910 2XET 1XC

You could also house the wireless unit inside the bars using a really short cable between the shifter cable and the bar end junction? It'll still connect with the Garmin, but it'll be out of sight

You still retain an easily accessible charging port for the battery

Avatar
CXR94Di2 | 6 years ago
0 likes

Doesn't matter which connect s to what, just need access to charge point.  It's a  can bus system.  

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