[QUOTE=DAEpperson;5902898]Cool counter-rotating props. What plane is that? Someday I hope to be smart enough to understand how they make those spin both ways!
/QUOTE]
I may be wrong, but I think the information you are seeking has to do with the concentric prop shafts.
Imagine the shaft driving the rear propeller is hollow and open in the back end. That shaft is driven by a gear. A second shaft is fitted inside that one and sticks out farther in front. The leading propeller is attached to the inside shaft.
This Gannet is at the Yorkshire Air Museum. The big 4 engine beast in the background is a Halifax bomber.
Les