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Have a bicycle with sram rival shifter and sram gx mech which I recently changed handlebars on with new gear cable. There is supposedly a 1to1 ratio here however the shifting performance is not great. I can at most use 10 out of 11 gears. My theory is that there is something which flexes in the gear line that cause this problem.

I don't think there any issues with my mech hangar as it worked perfectly a few days ago with another shifter.

Any other things that could be the culprit? Or tips to how to find the issue?

I just wrapped the bars with new and expensive handlebar tape so if possible I'd like to keep that untouched ;)

Edit: Began from scratch and changed the cable. However the problem persists.

So I'm getting clueless now, only thing I haven't checked is the mech hangar alignment with the dag tool.

Seems like the issue now is gearing from the fifth to sixth cog.

Gears worked perfect on the older handlebar with an xo shifter. However since then I have changed the cassette and chain as well.

What's my next move? Can't let the bicycle win. :)

  • Are the gear cables routed under the bar tape? If wrapped too tightly it can cause extra friction. If you can only use 10 gears though it is likely something more basic like cable tension - best just to undo the cable at the mech end and start over. – Andy P Jul 2 '18 at 8:37
  • Just to clarify - you changed the handlebars, bartape, and gear cable inner wire? Did you change the shifter? ("it worked perfectly with another shifter") Did you change gear cable outers? Are they seated in the ferrules correctly ? Does it change properly if you pull the exposed inner wire while slowly pedalling ? – Criggie Jul 2 '18 at 9:33
  • Changed handlebars, shifter, cable inner wire and housing. Internally routed in the frame. Have no exposed wires to pull. They should be seated in the ferrules correctly. One change I did is that I added a barrel roll on the wire. – netbrain Jul 2 '18 at 9:36
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    Before you wrap up everything again, lash the rig together with adhesive tape and test it out. – Daniel R Hicks Jul 2 '18 at 12:34
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    Redid everything now. See edit. – netbrain Jul 2 '18 at 19:28
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Gears worked perfect on the older handlebar with an xo shifter.

XO shifters were 9 speed and were matched with derailleurs that used the "SRAM (1:1)" actuation, which is a pull ratio of 1.1.

SRAM rival 11 speed shifters are part of SRAM road series which all use a rear derailleur pull ratio of 1.3. (Yes 10/11 SRAM road derailleurs are interchangeable.)

SRAM Rival road shifter matched to a "SRAM (1:1)" rear derailleur will never work properly due to the difference in pull ratios.

Finally, which "GX" derailleur do you have? I don’t know of any GX derailleurs that use the “SRAM (1:1)” actuation ratio. It was my understanding that the "GX" moniker was only used on 10/11 speed SRAM mountain bike derailleurs (see full list)? A 10 speed GX mountain bike rear derailleur should be compatible with SRAM Rival 10 or Rival 11 road shifters as they all use a pull ratio of 1.3. An 11 speed GX derailleur (pull ratio 1.12) will not be compatible with Rival shifters (10 or 11 speed).

NOTE: An 11 speed GX derailleur (pull ratio 1.12) would have been close enough to work with a 9 speed XO shifter (which expects a pull ratio of 1.1), but will not be compatible with a 10 or 11 speed Rival shifter, which are both expecting a rear derailleur with a pull ratio of 1.3.

UPDATE the OP actually had an XO1 (not XO) shifter which uses "X-ACTUATION" and should be matched to a derailleur with a pull ratio of 1.12. SRAM Rival shifters expect a derailleur pull ratio of 1.3. This difference is likely causing the shifting issues.

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