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PostPosted: Thu Jun 09, 2016 10:08 pm 
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Joined: Sat Jan 23, 2010 1:24 am
Posts: 106
Location: Evansville, IN, USA
The title question pretty much is what I'm asking. I'm about to start an unconventional 6870 Di2 arrangement. The BTR2 battery would be internal to the headtube. The EW90 would be under the seat. So would like to plug the BTR2 directly into one of the extra shifter plugs. Connect the LS to the RS. Then run an E-tube from the RS down to a JC41 junction near the BB that connects to the FD, RD, and EW90.
(Not planning on sprint shifters.)
Workable?

_________________
2015 Specialized Crux Pro
2013 BMC TMR01 custom build
2013 Cannondale F-Series 29'er, Carbon 3
2012 Cannondale CAAD10-1 custom build, 14.06 lbs
1980 Palo Alto custom build


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PostPosted: Fri Jun 10, 2016 5:00 pm 
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Joined: Sat Jan 23, 2010 1:24 am
Posts: 106
Location: Evansville, IN, USA
Haha...I'm guessing by the number of views and no replies that this hasn't been tried before. I'll post back on the results in a few weeks. Have a 'Plan B' if it doesn't work out.

_________________
2015 Specialized Crux Pro
2013 BMC TMR01 custom build
2013 Cannondale F-Series 29'er, Carbon 3
2012 Cannondale CAAD10-1 custom build, 14.06 lbs
1980 Palo Alto custom build


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PostPosted: Fri Jun 10, 2016 5:08 pm 
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Joined: Fri Jun 01, 2012 3:00 pm
Posts: 107
Location: San Sebastian
should operate


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PostPosted: Thu Jul 07, 2016 3:14 am 
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Joined: Sat Jan 23, 2010 1:24 am
Posts: 106
Location: Evansville, IN, USA
So...
BTR2 inside the steerer tube, plugged to LS
LS to RS
RS to internal B junction in downtube
RD, FD, A junct (under seat) plugged into B junction
Works great

_________________
2015 Specialized Crux Pro
2013 BMC TMR01 custom build
2013 Cannondale F-Series 29'er, Carbon 3
2012 Cannondale CAAD10-1 custom build, 14.06 lbs
1980 Palo Alto custom build


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PostPosted: Thu Jul 07, 2016 3:53 am 
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Joined: Fri Dec 05, 2014 2:08 am
Posts: 403
Location: San Diego Ca USA
Gearhead65 wrote:
So...
BTR2 inside the steerer tube, plugged to LS
LS to RS
RS to internal B junction in downtube
RD, FD, A junct (under seat) plugged into B junction
Works great


What bike did you do this set up on ?

Sounds clean, how about some photos ?

_________________
BMC TMR01 --> viewtopic.php?f=10&t=131523&hilit=tmr01

Colnago Master X Light --> viewtopic.php?f=10&t=140479


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PostPosted: Thu Jul 07, 2016 5:59 am 
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Joined: Sat Aug 02, 2014 1:54 pm
Posts: 2
You can put the battery and junction anywhere.
I have the battery in one of the handlebar extensions on my TT bike. It is connected to a JC41 together with one TT shifter, then through another JC41 (in the other extension) to the EW90. From then on it is a normal setup.


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PostPosted: Fri Jul 08, 2016 5:46 pm 
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Joined: Sat Jan 23, 2010 1:24 am
Posts: 106
Location: Evansville, IN, USA
KarlC wrote:

What bike did you do this set up on ?

Sounds clean, how about some photos ?


Was on a Specialized Crux Carbon. My dual purpose gravel bike/road bike, depending on wheelset. I'll shoot some pixs over the weekend.

_________________
2015 Specialized Crux Pro
2013 BMC TMR01 custom build
2013 Cannondale F-Series 29'er, Carbon 3
2012 Cannondale CAAD10-1 custom build, 14.06 lbs
1980 Palo Alto custom build


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