HI!
I'm actually making some satsuma wine right now! This is the recipe I'm making (#2)
http://winemaking.jackkeller.net/reques33.asp. I actually had a bunch of satsumas b/c a friend has a tree and gave me some. What I did to convert from orange to satsumas is I weighed a medium size orange and multiplied that weight X8 for how many lbs of satsumas I needed. I think it was like 7 lbs/gallon. I'm going to be making a 2 gallon batch and will be doubling all of the ingredients. Since I haven't gone to the LHBS lately, I don't have my yeast and other additives yet, but yesterday I peeled, seeded, and froze all of those dang satsumas (took like an hour and a half). Whenever I get my yeast and stuff, I'll be making it though.