I love mechanical things and have looked the at youtube AA130 videos many times, I am envious. The Marks Supply videos of EFMs running are another favorite and I would love to buy the motor rotor just to watch it run but I did not buy and here is why.
That AA 130 needs what say 50# of coal to get it running and you can't really underfire the beast too much. So Sept to Nov and March until May you just don't have the controllability you need. Sure you can control individual zones but even if they are all off the beast is still running not like a coaltrol running a carpet system. I know people use say oil or a wood fire until it really gets cold but that story is getting old as oil escalates and wood is a damned nuisance. So to me (if I wanted to go hydronic which I don't) I would like would be a great boiler (AA) controlled by a carpet/coaltrol/powervent system. IMHO of course. Looks to me like LL is putting together that system and I wish them the best of luck. At last we have permission to build another section of the farm (NY is the worst and our town must be a worst in state contender). I will need a ton of hot water. Don't be surprised if yours truly runs over to Berwick as I attempt to wrestle this beast away from Matts clammy hands. It's sure ugly, does not whirl around and so is not as much run to look at but it has the potential to be best in class. Well tested subsystems and I think I could be suckered into this one. Oh oh, I can here the incoming shells now - I am going into my foxhole for a while.