Seems like this engine is putting out about 165 hp @ 440 rpm, and about 3800 nm of torque. But I noticed this engine also weighs about 750 kg, and the first two flywheels rotate in the opposite direction of the second two, which causes a lot of inefficiency because the gears slip and a lot of power is lost. Why've you done this?
The engine would probably be significantly more stable if you used one geom per cycle for each chamber. Sometimes it spawns a crapload more than it should and everything explodes and goes straight to hell
I actually created the transmission several years ago and have just been dropping it in different vehicles, mostly just for testing purposes. The coding in it isn't terribly complex, though inefficient.
The crane functions decently most of the time, but the gears are prone to very occasionally jump teeth which can cause it to have a stuttery action sometimes. Why didn't you use cgears?