Of course an interesting project of a famous Swiss designed gun which was installed don thousands of USN vessels during WWII. I am surprised that PT 109 might have used the model with the solid base and center shaft elevating crank as this one required another crew member to operate the crank. But again that was early in the war and they would use what was available. The various one's I did in 1:192 and 1:120 are so much more simple than this large version you are doing. I did find on line somewhere (will have deleted it by now) a maintenance manual showing all the parts in disassembly and with 3D illustration.
The bag for catching the expelled cartridge brass would not be an easy subject!
I draw and print this gun for my friend Stephane who scratchbuilt an Elco 80, but this star will have no historical reality, Stephane does this for fun and let his imagination guide him.
They also have OP-909 for the base/mount and OP-1439 for the twin 20mm assemblies.
If I recall correctly a few years back someone posted a 1:24 scratch build of a PT boat on this forum. It was a beautiful and fantastically detailed model!
Phil
A collision at sea will ruin your entire day. Aristotle
I rather like your friends imagination! Often we can improve with our hindsight what could have been for instance a WWII ship. It's an interesting intellectual exploration. A warship is a series of compromisizes The hitch is the time to construct a warship suffers from a rapidly changing war scenario. Perhaps the magnificent Iowa's would have been better replaced as the new Kongo's by the Alaska's in greater numbers. The 16" 50 MK 7 never had an opponent. The Japanese giants equally never really had an opponent and were swarmed by gnats.
They also have OP-909 for the base/mount and OP-1439 for the twin 20mm assemblies.
If I recall correctly a few years back someone posted a 1:24 scratch build of a PT boat on this forum. It was a beautiful and fantastically detailed model!
Much of sophisticated military technology is outdated by the time it enters service due to the long planning and execution times ... a few pieces of basic technology on the other hand have survived in active service for decades - the German MG42 (now G3) and the Kalashnikov comes to mind, for instance.
Eberhard
Former chairman Arbeitskreis historischer Schiffbau e.V. (German Association for Shipbuilding History)
So I have some small mistakes to erase on the barrel, when you see how it works mechanically, you understand better the role of some parts and their precise shapes.
Yesterday I slowly resumed 3D modeling after a good break to recharge the batteries.
I've started to work on the cannon, without any real plan, but thanks to the excellent video presentation of this cannon from "Forgotten Weapons", I think I'll come up with something acceptable and credible in a while.
Your 3D work on this is really nice - I'm sure you have lots of references to use in the meantime while HNSA is down.
Hank
HMS III
Mocksville, NC
BB62 vet 68-69
Builder's yard:
USS STODDARD (DD-566) 66-68 1:144, Various Lg Scale FC Directors Finished:
USS NEW JERSEY (BB-62) 67-69 1:200
USN Sloop/Ship PEACOCK (1813) 1:48
ROYAL CAROLINE (1748) 1:47
AVS (1768) 1:48
Fortunately, I saved a lot of things several months ago.
The San Francisco Maritime Park Association has a webpage that is basically a copy of the HNSA's document pages, so one can try looking there: https://maritime.org/doc/index.php
