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PostPosted: Wed Sep 13, 2017 3:08 am 
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Joined: Mon Jul 26, 2004 1:06 pm
Posts: 1072
Location: Melbourne, Australia
A busted right hand means left hand shifting is needed. Di2 is the only option. I've ridden SRAM for 15 years and haven't kept up to date with Shimano. Can anyone tell me if this will work or if I need more parts/wires/connections/junction boxes?

SM-EW90-A junction box under stem
SW-M8050 left hand shifter connected to SM-EW90-A junction box at stem with EW-SD50 wire
BT-DN110 battery in steerer tube connected to SM-EW90-A junction box at stem with EW-SD50-I wire
RD-M8050-GS rear derailleur connected to SM-EW90-A junction box at stem with EW-SD50-I wire
SM-BCR1 battery charger and SM-BCC1 charger cord

Will that setup still allow wireless configuration from an ipad with e-tube software?
Will I be able to charge the system through SM-EW90-A junction box at the stem?
Will I be able to put the system into adjustment mode at SM-EW90-A junction box at stem?

I want to keep it as minimal as possible and don't want a display.

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Posted: Wed Sep 13, 2017 3:08 am 


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PostPosted: Wed Sep 13, 2017 6:58 am 
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Joined: Fri Jul 30, 2010 7:08 pm
Posts: 231
Grover,
Yes it will work, and you can charge and micro adjust with the SM-EW90-A, only bit i'm not sure on is the Ipad setup.
Although some setup can be done with the SM-BCR1 battery charger,


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PostPosted: Wed Sep 13, 2017 7:04 am 
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Joined: Mon Jul 26, 2004 1:06 pm
Posts: 1072
Location: Melbourne, Australia
Excellent.

It looks like SM-BCR2 is a better choice for the charger.

I'll keep investigating the wireless capabilities. I suspect I'll also need a wireless unit in the system like EW-WU111. In that case I'm probably better off just buying the MT800 display which accounts for the junction box and the wireless unit. Can anyone shed any light on that?

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PostPosted: Wed Sep 13, 2017 7:32 am 
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Joined: Tue Jan 09, 2007 5:04 pm
Posts: 323
Yes, you need a EW-WU111 unit (aka D-Fly), otherwise it will not communicate wirelessly to for instance an iPad or a cycling computer.

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PostPosted: Wed Sep 13, 2017 9:03 am 
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Joined: Mon Jul 26, 2004 1:06 pm
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Location: Melbourne, Australia
But if I got MT800 display instead of SM-EW90-A as the 'junction box' then I wouldn't need the EW-WU111 as the MT800 does wireless communication itself?

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