[Ironwrench]

A radiator flap/shutter crank like the starting crank on a Model "A" Ford?! However, radiator control makes sense; that is why it only cranks in flight. If you watch closely, when you move the throttle the crank responds to the throttle position. It seems pretty strange to have the radiator crank in a position where it interferes with the gunsight. I have never seen anything like this in any real aircraft, but then I never sat in the cockpit of a real Japanese aircraft of this vintage. They definitely had a different way of thinking about engineering in those days.

The Wrench