Not limited to 29's but I just changed my 2-10 to the One Design 1-10 with the 42 big and the 16 in the middle. I used the Rad cage as my bike was full Shimano XT and shifting without the cage is very iffy with a conversion. Two short rides so far and the shifting is great , no hesitation , no over/under shifting, and the gear jump in the middle is very reasonable. I will probably go 1-11 on my next build but this is pretty good considering the price. This conversion was on my TB2.