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  1. M

    HELP with adding Di2 rear derailleur

    Do you t Do you think the eTuning app with the full license will let ME do that? We are a long way from a Shimano service center.
  2. M

    HELP with adding Di2 rear derailleur

    I have a Da Vinci Symbiosis e-assist mountain tandem with a Shimano EP8 motor. I have a 1 x 11 drive and I'm trying to add a Di2 rear derailleur. After I connected my derailleur to the motor and the left assist switch and right shifter switch I get an Error Code E-030. If I disconnect the...
  3. M

    Cassette range - 10-51t v 10-45t

    I had an 11-46 on a da Vinci Symbiosis e-tandem and it worked good for everything...except the 16% climb we had to do everyday at the end or our rides. An 11-51 solved the problem and I didn't have to add any links to my drive chain. although we don't use the 51 much, it's always there...one...
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