Does Shimano suggest bluetooth module (Di2) be installed externally?

Discuss light weight issues concerning road bikes & parts.
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Noctiluxx
Posts: 772
Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

My mechanic installed the bluetooth module outside my aero bar. He told me Shimano recommends external install to avoid signal interference. Can anyone confirm this? BTW my other two bikes have the BT module installed internally with no issues.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

by Weenie


spdntrxi
Posts: 3128
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

yes they recommend external... mine currently is external, but yes I've had the older ones all internal with no issues.

TurboKoo
Posts: 537
Joined: Wed Oct 29, 2008 7:55 pm

by TurboKoo

If you install it internally I’d recommend to take it out during FW updates to avoid possible BLE dropouts.
Scott Foil
Shimano 9150
Shimano FCR-9100-P
Shimano C60 tubulars

kode54
Posts: 1619
Joined: Tue May 23, 2006 9:39 pm

by kode54

generally, yes. they give you clips to mount alongside brake cable housing. works internally with carbon frames. not much so with titanium or steel frames (weak BT signal).
- Factor 02 Disc + DA9170 + Enve 4.5AR CK CL hubs
- Moots Vamoots Disc RSL Titanium + DA9170 + Enve 3.4AR CK CL hubs
- Parlee Altum + DA9150 + Enve SES 4.5 Ene carbon hubs
- Argonaut Spacebike 2.0 + DA9170 + Enve SES 5.6 DT Swiss 240 CL hubs

Andres
Posts: 62
Joined: Mon Mar 09, 2009 10:10 am

by Andres

They recommend that, but it also ruins the look of the "all internal" thing they're trying to achieve. I've done multiple builds with a very short e-tube from the seatpost battery to the wireles unit, and one from the unit to the internal junction without any issues. I also haven't found it to rattle in this position.

Finx
Posts: 67
Joined: Wed Jun 15, 2016 1:14 am

by Finx

On my carbon bikes, I've run mine inside the top tube with no issues. I didn't even try it on my Ti bike. I don't really need Dfly while I'm riding much, so on the rare chance I need bluetooth, I'll just plug in the WU inline on the RD until the update is done, then remove it again.

Honestly though, I've had enough weird issues with the bluetooth software on my IPad that I don't even bother with it any more.

by Weenie


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nycebo
Posts: 127
Joined: Fri Nov 13, 2009 8:04 pm
Location: New York, NY

by nycebo

Finx wrote:
Mon Aug 27, 2018 5:35 pm
On my carbon bikes, I've run mine inside the top tube with no issues. I didn't even try it on my Ti bike. I don't really need Dfly while I'm riding much, so on the rare chance I need bluetooth, I'll just plug in the WU inline on the RD until the update is done, then remove it again.

Honestly though, I've had enough weird issues with the bluetooth software on my IPad that I don't even bother with it any more.
You make a valid point. I was so excited to get it when it came out, but the eTube app is just garbage. So slow and unintuitive. It's still loaded internally, and I had initially thought about including it on my new build, but I'm not of the mind that I'll exclude it. The only real advantage seems to be for Mac users and if one's traveling.

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