Lego Pneumatic Engine - 4 cylinder Ross yoke (II4)

This is a four cylinder version of the Ross yoke engine I built earlier. The design extends very elegantly to a 4 cylinder; it becomes a very compact structure. It is quite powerful as well, as is also visible in the clip, with all the deformation of the frame and all that :-)
I was thinking how to call this configuration, and since it's two rows of cylinders I think II4 is the best choice. Onwards to the II12 then :-)

Видео Lego Pneumatic Engine - 4 cylinder Ross yoke (II4) канала DrDudeNL