I just got dun with building the 2nd steam enjoin. I have it Brock in and thought id hook them up to run off one throttle valve. Well after tweaking the timing on both enjoins they will not run at the same rpm. Because it is an air piston enjoin if one has more revisions or load the other picks up speed. Now with two throttles you could compensate one for the other but with now way to see the rpm on the transmitter of the enjoins im thinking of just linking the two enjoins together. If I fix two gears on to the flywheel of each enjoin and put then next to one an other they will be counter rotating. Don’t worry, I have it all in my head. Now on two the boiler.