I did search as well as looked at http://sheldonbrown.com/dura-ace.html and http://www.ctc.org.uk/DesktopDefault.aspx?TabID=3946 and cannot figure this out.

I am doing a quick budget test build using some 8 speed Dura Ace brifters (I had them laying around) using a late model (read 9 spd) Ultegra rear derailleur. I tried an 8 speed DA cassette that seemed to work but with some rubbing. I had another wheel with a 9 speed cassette and threw that on and it seems to index perfectly. I know the 8 spd DA has a shorter cable pull but I haven't been able to figure out how the pull equates to a 9 spd pull.

I am going out on a test ride tonight with the bike but I am wondering if anyone knows if I have a workable setup or am I destined to be stranded on the side of the road.