“As you can see, the carriage is now mounted on a steel swivel stand, has the upper racer aprons and electric controls, and has the catwalks & rails installed. The gun now raises & lowers at the touch of a switch. Soon it will traverse and elevate automatically as well.
By watching videos of DC carriages in operation, I was able to match the speed of the model to the firing of an actual gun. I find that observing the model as it works gives you a great admiration and respect for the tremendous engineering talent of the men that designed and built the disappearing carriages.
When triggered, the barrel begins to raise slowly, then the gun levers rapidly accelerate the barrel to the in-battery position. Once fired, that accelerating facet of the design in reverse forces a quick starting lift of the counterweight and then gradually slows the inertia of the barrel backwards down to the rest position in recoil. An absolutely perfect pattern for the recoil of a large weapon…
I believe the museum staff has a place picked out for the display so hopefully we can have it installed soon. The completed display will need at least a 6X8 ft. footprint but an 8X8 footprint would be much better.”
This post was written by JohnStanton on October 30, 2008