[lukelearmissile]

I'm not sure if anyone has noticed or mentioned this, but referring to the picture of the 2-bladed Spit, with stationary airscrew, I think the blades are feathered incorrectly, as the Merlin engine spins anti-clockwise from head-on. The blades in the picture are set for an engine that spins the other way.
Thought you ought to know.