I just got a great deal on a brand new 2009 Hammer 29er frame and I am going to build it up as a rigid single speed. I want to leave the option open to go to a 1x9 so I will be getting a 9 speed hub and SS conversion spacers. The main reason for this is I was originally looking for 1x9 but because the frame fell into my lap, I would like to give a SS a chance since I have the right tool at my disposal. Have any of you built one of these frames up? Is there anything in particular that worked well, or didn't work well?