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Discussion Starter #1
I am looking for opinions for converting a 3x8 Trek T900 Tandem. I love the simplicity of a 1x system. Any thoughts or opinions?
 

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I’ve got GX Eagle on a tandem. The frame is boost spaced. The BBs are Eccentric bb front and BSA bb rear. I used raceface atlas cranks because they have the arm length and spider options I wanted. The timing chainrings are 40T. The drivetrain inner chainring on the stoker's crank is 32T. Let me know if you have any questions.


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Discussion Starter #3
Nice. Great config. Thank you for the tip. I was going through my parts bin and I found an old Sunrace 11-46 and Deore XT. I am going to try that first. Does anyone know if there's a way to connect Shimano DL T610 (mechanical brake) to a SLX or an XT Spec shifter?
 

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Discussion Starter #4
1x11 Conversion successful! Shimano, Sunrace and XT Setup

It is done. The T900 has been converted from a 3x8 a 1x11 setup. Can't wait to try it on the local climbs. Here's my parts list.


  • Shimano XT RD-M8000 Rear Derailleur
  • Shimano XT M8000 11 Speed Shifter
  • SRAM 1170 11 Speed
  • Dekas Round 30T Chainring 104BCD
  • Sunrace 11x46 CSMX8

Now I just need to find a way to route the cable so that it is not exposed.


 

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