compatibilty of 10 speed dura ace bar end shifters and xt 10speed rear derailleur on my new surly cross check i have installed the following:


10 gear Dura Ace Barendshifters (7900), 
26-36-48 crankset, 
xt front derailleur, 
10 gear xt shadow rear derailleur 
11-32 casette.


while shifting the front derailleur works fine, the rear derailleur does not shift all 10 gears. i have read about the incompatibility issues of road and mtb components and have come across the following hack:

This is a pretty popular hack. If you’re using 10-speed triple road shifters (Tiagra, 105, Ultegra), you can hook them up to a 9-speed MTB derailluer, a 10-speed MTB cassette and a 10-speed chain. As the 9-speed MTB derailleur pulls in the same way as a 10-speed road, you are essentially just increasing the derailleur cage length to increase the overall capacity. Keep in mind the 10-speed shifters will ONLY work with 10-speed road triple front derailleurs.
Crankset: 50-39-30t
Cassette: 11-36t
Setup Capacity: 45t
Smallest Gear w/ 700×38 Tyres: 23 Gear Inches

thankyou cyclingabout.com

would this work with my setup (when i exchange the rear derailleur)? the dura ace shifters are not mentioned and i have different crankset and cassette setup.
Your bar-end 10s-shifters must have the same index (cable-pull ratio per shift) as the normal STI 10s-levers: 2.3mm. That leads to the incompatibility with the MTB 10s-derailleur, which is build for the 3.4mm cable pull of Shimanos 10s MTB shifters. Using a 9s-derailleur, which requires 2.5mm cable-pull, brings you close to the index of your 10s-shifters, so that kinda works. Adjust it to align perfectly with the middle gear and the outer ones wont't be too far off. (ref: artscyclery)

If you want to use your 10s-MTB-derailleur (probably for the shadow+ capability?) with your 10s-RR-shifter, you'll need to change the derailleurs cable-pull ratio. You can do that either by re-routing the cable through a small hole in the derailleurs lever (ref: mtb-news.de and in english pinkbike). Or by using a special excenter-pulley (ref: Jtek ShiftMate) which translates the cable pull-ratio to the needed 2.3mm.