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About jud

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    Lexington, Oregon
  • Interests
    If it is old, I have an interest, have done enough different things to appreciate most.

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  1. Been waiting for someone to let it out of the bag about how Fiber Rope is measured. My 5th edition of the American Merchant Seaman's Manual lists as 12" in circumference as the largest manila rope in their sizing table, its says it is 3 3/4" in diameter, manufactured in 1200 ft coils weighing 5,225 pounds +/-, breaking strength of 102,000 pounds.
  2. The Teak Decks aboard the Helena CA 75 were bleached to get them a light color, Boiler Compound, Scouring Powder, Salt Water Soap plus anything else the Boatswain Mates put in it. Modern times so the concoction was mixed in a garbage can with salt water and let sit and age overnite, would eat a Whitehat. That stuff was put down with a swab before the Holy Stoning began, that mix was used about once a month unless we were being bombarded with stack soot, the holy Stoning itself was done once a week and it never bleach anything by itself, carrying the Flag, all had to look good. Once had Mount 32 a 3"50 Dual Purpose Gun located on the Port Side aft of Turret Two on the main deck right outside the Admirals door to his living spaces, had several different Admirals and all were friendly and respectful to us working on that Mount, it was the Junior Officers that gave us fits. Photo a section of our Teak Deck.
  3. Traverse PC and Generic Cad is what I have used for a very long time, Started out with a COGO on an IBM 1130, writing the program, punching the cards, feeding them into the card reader, waiting for them to reach the machine, monitor the printer as the program ran, tear off the printed sheet, recover the punch cards, debug and run it again, magic it was. We even acquired a drum plotter that printed all diagonal lines like a stair step, what a wonderful machine Punch Cards on an IBM 1130. The programs I first noted work for me and I have owned them a long time. You are getting some good ideas above, I stick to what I have, it is paid for and I am familiar with it, follow the above advice. Whatever you choose, it will be obsolete soon along with the software and data storage media, Store important stuff on acid free paper, you will be able to read it in 10 years, I expect a huge hardware change soon, it is past due.
  4. I removed my post and the attached photo of a Twin Bofors because it lead away from the modification to the model being discussed and that was not my intent. Bad habit, see something that triggers a memory or opinion and I post it, usually inappropriately. Photo reveals why I did not like the shields in the drawings, regunning, replacing worn out barrels.
  5. In my world, felt is hair, washed steamed and pressed, adding tar would make it impervious to water, My felt hats will eventually soak through and I have washed my work cowboy hats with soap and water in a bucket, pat most of the water out and wear them dry, later using steam from an iron and the iron itself to reshape, hair, tared and used in a joint to waterproof the end grain sounds reasonable to me. Tared felt in the stem above the waterline and coppering makes sence to me, water getting into the endgrain, then drying and wetted again leads to dry rot.
  6. Brings back memories; One I drove when I was back from RVN. 250 block bored to 335 with a blower and the pyrometer ruled, 5 speed main and 3 speed auxiliary, nice truck. Joe Bowen, Springdale. Arkansas; Owner
  7. 1926, breach loader days. Device to hold ready service cartridges, dropped in and stopped by the cartridge rim. Hole in the center used as a holder so the holding plate could be removed and replaced by a different caliber if the Ammo Cart was used for a different sized gun. Don't know, pure speculation. Maybe some evidence of compression on the bottom of the small hole, it may have been set on top of a cylinder and secured, Possible compression showing on the brass plate around the large holes. Hope someone with better research skills can solve the mystery.
  8. Great pictures wefalck. Now time for a stupid question. Those boats were open to the elements, so would collect rain or melted snow water in the bilges, also they would ship water under oars or sail in calm to moderate seas then there are the lively seas that might come aboard anytime from any direction, No pump wells or dipper wells, water looks like it was allowed free movement in the bilges. Has any means to dewater those boats been found in the remains now on display, modern or ancient? Closest I ever was to seasick was when I had my head in the bilges just forward of the engine of a 34' Troller in SE Alaska. There because the pump could not keep the bilges pumped because it was rough and the bulge water was running back and forth in the bottoms, coming up the sides and getting into out bunks and cooking area, I was there with a flattened on one side gallon can catching some of that water as it went by, made it through 3 gallons and had to get out of there, from the wheelhouse my head and belly returned to normal, since that experience in 1965, I always look to see how water in the bilges is managed and the reason for my inquiry. Cans and scoops have their limits.
  9. I would put little reliance on the photos of the model to determine projectile weight, the close up reveals little uniformity and I suspect they and their bores are not to scale. 3 Pounders would create plenty of destructive force to overcome the swivel mounts, I say that because of the forces generated and strongly believe for that setup, (as it is later displayed in drawings), to be reliable for extended periods, would require 1 pounders, Lots of half inch lead balls in a 1 pound shot load. Take another look at those guns, crudely displaying configuration and mounting method makes for a poor detail guide..
  10. Jaager, glad to see someone expanded on my chainsaw post, modeling kits certainly have made many power tools overkill. Some start scratch building at the cured log, end product may resemble a kit, but it requires much more effort. Some mighty fine models were produced long ago without power tools as you know. Your list of methods clarifies my statement about goals much better than I did, that is the primary starting point for acquiring and it sets the limits for useful power tools.
  11. A good chainsaw would be a big help in harvesting your raw material, I would ask someone in your area what they use for that job. Opened up a big subject, without a hint about what your goals are, sometimes the tools you are using are the best choice, supplemented by a good rotary tool with a selection of chucks to broaden the usefulness of the thing might be a good start but not much good for cutting out Frames. Adding various fixtures that the rotary can be clamped into is often a step taken to refine cuts. You need to refine your goals to obtain useful information or you will end up with lots of chainsaws and a few axes hanging on your wall. Good luck. Use the right tool for the job.
  12. Parrott's and other rifles were the tools of our Civil War after stronger iron was available and improved casting methods were developed, Used it mainly because of the impossibility or intent of these ships intentionally coming under fire from shore guns or even larger guns afloat in ships. These ships were never intended to be the targets of shore batteries or ship in a slugfest, expect they operated along rivers and within sheltered waters against small craft filled with men armed with cutting weapons, perhaps some muskets, but mainly equipped for boarding. If you notice the design, the pivoting part of the mounts were just dropped into place. A half dozen pivots with guns could just be dropped into the solid fixture, another dozen without the guns for a slower but still quick change. These guns I expect were 1 pound guns, don't think a 3 pounder would allow repeat firing and this vessel was set up for sustained intense fire and that would require more men than could comfortably be carried as Ships Company for extended periods, manpower was probably supplemented from support vessels, they manned the guns while the crew worked the ship or oars.
  13. Trunnions are where they are to act directly into the mass to their rear when firing, Looks like the they are held in place from the front by that block secured in place by bolts. Well designed mounting intended for a specific, but repeatable use.
  14. Swivel guns also had no provisions for recoil movement and I am sure that if an oversized propelling charge, coupled with to much shot were used, damage would be done to these guns as well as Swivel Guns. Because of that, I suspect that complete cartridges containing powder and shot were made up in advance to avoid inadvertent overcharging also with the benefit of faster reloads. Recoil energy is always there, it can be controlled in several ways using mass, time and distance. Mass alone can be used and any residual forces that pass through to the ships hull would cause it to do its thing and flex. Ships hulls are flexible things or they would be quickly destroyed by all the reversing forces acting on them, so residuals remaining from firing these small guns would not cause any excessive stress to the hull. From the drawings, it would appear that the flexibility of the hull was used to do just that. We know that Swivel Guns did their jobs in spite of no recoil system other than the flexibility of the ships hull and the timber it was mounted to, we also know that the people using this equipment had some first hand experience and knew what the upper limits of loading would be to avoid immediate destruction of the mounting. Our Saluting Battery aboard the Helena CA 75 was a 40MM Bofors Breech Housing and all the Breechblock operating system, using a modified sear, originally designed to fire when the breech was latched on closed, (ram a round, the rim on that round released the extractors setting the block free to close and fire the round), needed modification so the firing pin was released using a lanyard so the timing could be controlled with a closed breech. A short section of barrel was screwed and locked into the housing and the whole thing bolted solid, with a bit of elevation to a mount with 4 legs bolted to a ring welded to the deck, all rigid except for the hull it was mounted to, a lot of energy was stored into those 40MM full sized blanks. This gun arrangement looks like a legitimate and useful rig in the hands of trained crews and leaders, will there be failures, yep, to long in service, defects and overcharges would be expected, but even a 10 percent failure would not put this vessel out of the fight it was intended to be in. Now some clown with his 30 pound Parrott Rifle would quickly would quickly ruin their day. .
  15. Like the swivel and elevation system. Trunnions are set so the gun could be aimed down very close to the ships hull and if aimed forward or aft could get closer, would expect some boarding hazards to be part of the rigged for action arrangement, also would expect 3 guns to be assigned one target and move on together to the next, at least that is how I would start the action were I in charge of the battery. Photo; M 79, M 16 and concussion grenades were our anti boarding tools, swimmers did get through once and left 3 mines, comand detonated, one of the 3 had a low order detonation, made us hard to approach unannounced. What do you tell your gun crew, when you and they all heard the SEAL holler up from the water below you, say there was a mine under us and he was going to attempt to disable, then recover it, while we kept the gun manned?

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