I've just purchased a nice new Boardman Cyclocross carbon frame ( here ) and I'm looking to make it up with a SRAM Hydraulic disc group. At the moment I'm riding a Boardman alloy CX with a 10X2 speed Rival set with a 50-34 on the front and a 11-36 on the back.
(By the way, I noticed an earlier thread where this combo was questioned- all I can say is that it works flawlessly for me even to the point that I could (though wouldn't) ride silently on both small rings or both large rings. Before I upgraded it also worked with SRAM 10 speed Apex mechs.)
I'm near 66 and I must be one of the worst climbers even taking into account my age, and the thought of having less that my current 34-36 bottom gear combo fills me with some dread (for those who think no one needs such low gears all I can say is - lucky you!).
So the question is- has anyone tried the same trick with SRAM 2X11 speed sets? If the only difference is the spacing between the cogs, surely the 11 speed mid cage rds could cope with the same cog sizes as the 10 speed? But has anyone tried it? The only cassette which might fit the bill is the PG1170 ( here ) which SRAM say is only compatible with their Force 1X11 system and RD. But is this going to be different from and completely incompatible with all their other PG1170 cassettes made for road bikes?
I know I could have the 1X11 with a 10-42 cassette option but these sets have smaller single chainwheels. While I'm slow up hills I don't want to be spinning out on enjoyable descents.