jud

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About jud

  • Birthday 08/27/1942

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

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  1. Many are a form of Quaker, or dummy. The ports being just cavities with the Quaker in place, some models have model guns in place. You will find a wide spectrum of materials and numerous rigging arrays. The answer for this one is, it depends, it depends on the modeler, his skills, available materials and the modelers wishes. jud
  2. Sounds like your math is right, your assumption that the 2013 publishing date was the copyright date or the date he completed the book probably is a poor assumption. Believe a little research might reveal when the book was copyrighted and a little more the date of death, I don' have enough interest in researching it for you, more intrested in peeling some spuds for hash browns. jud
  3. Welcome back. Revive the old, short explanation on the interlude if you wish, but not necessary. Things happen in life, we all know that. jud
  4. Have to admire the Auxiliary Fleet, they got little glory but worked about 24, 7s. GM 2, 7 years active. 4 year hitch + a 2 year hitch with a 1 year extension. Have a good one 'Boats'. jud
  5. Built the Revell Cutty in 64, only did the standing rigging, damaged during dusting and gave it away, not near the job you have done with yours, a keeper.. The Navy granted all of us at NTC San Diego weeks Christmas Leave in 1959 so spent Christmas leave at home. Company 537, orders to DD 527 after graduation, born on the 27th, lots of 7s . jud
  6. We have been able to get muzzle velocity up to and above 4000 ft/sec but at those speeds the bore erosion become excessive and the heat generated on the projectile can melt it like was happening with the 17 bee if loaded a little fast. Bore wear and rotating bands effectiveness is what limits maximum velocities at the bore, other projectile design factors will contribute to stability and down range retention of speed. Changing a gun tube is not usually done aboard ship, did change barrel's on the ready mount on the Harnett County, LST 821 because of wear, easy change, didn't even unload the loaders.
  7. Both Black and Smokeless powder produce gas to launch a projectile, we can put more potential energy into smaller packages of modern smokeless powder than we can using Black Powder but provided enough room we can place the same amount of potential energy in a gun tube using either mix. Using smokeless powder instead of Black powder, the advantage is mainly because the rate of burn can be controlled much better and slowing down that rate of burn allows smokeless powder to deliver an increasing power push against the projectile for the full length of the bore, Black powder is packed tight against the projectile because it is much closer to an explosion, its rate of burn and the packing prevents a void from being pressurized before the projectile begins to move, smokeless powder acts on the projectile like a compound bow does on an arrow, the push starts slow and increases with travel so a void does not create an over pressure point as the projectile begins movement. Pick up a Black Powder cartridge and shake it, you won't hear the powder moving inside the case like you often can in a smokeless cartridge, there are compressed loads produced today using smokeless powder so exceptions are out there. Anyway the energy released at the time the projectile leaves the bore can be equal using either powder, the speed of the projectile will be different, the forces with black powder peak sooner and the projectile acts more like shrapnel traveling down the bore than a projectile brought up to speed slowly and pushed out. The crack or womph is sound waves emitting from the blast, there can be some supersonic crack added from the projectile and hot gasses at the muzzle passing through the air but that projectile crack is added because of velocity not pressure. Does not matter the propellant type, hearing damage can happen even when using a high pressure air gun, pressure can build unheard, the release of that pressure is always forceful. Sound waves can be caused by any number of things creating potential damage to hearing, they don't need to be accompanied by blast to compromise your hearing. Keep in mind everything I have written is out of the memory banks, I did no research while making these posts. jud
  8. Pressure Wave, that is muzzle blast and you have it with BB guns, it is a measurable force. That blast alone can cause impact damage but it is damage caused by force, not sound waves which are directional and travel in sine type waves, the amplitude and length of sound waves can be measured and their frequency is then defined. I have observed muzzle blast blow loader covers off of 3" 50s, tear sound powered phone boxes and first aid boxes from the splinter shields. When you are on or next to the gun and attempt to record the sound all you will get is the splat from the blast forces as they impact the mike, that splat is blast effect, it overwhelms the sound waves acting on the mic., get well out of the blast area and you can then record the sound waves. Sound is detected by our ear drum being vibrated by sound waves, that vibration is detected by the nerve endings in the inner ear and we hear sound, different sound for different frequencies. Our ear drum is like a drum head or that microphone noted above, it can pass different frequencies or get blasted by the splat. That splat can cause pain or damage the membrane of the ear drum itself. What passes through the ear drum is what can damage the hearing nerves, it can happen with one episode or with an accumulation of repeated exposure. Muzzle Blast is accompanied with Sound Waves, blast can cause physical damage, sound waves typically pass by and through. Ears are designed to detect different sound wave frequencies and they all collectively feed information to our brains, when frequencies are lost, so is the ability to distinguish the finer subtleties in speech and bewilderment or request to repeat become irritating to the speaker and the listener. The hearing when lost is lost at the time of the incident, not years later, may be some exceptions to that but I know of none myself. My hearing was tested at above average in boot camp in 1959, in 68 at Cam Rahn Bay in 68 I had measurable high frequency hearing loss and was told that the ringing would never go away nor the lost frequencies return. I learned to read lips, avoid crowds or any other environment with background noise where I would be expected to interact with others. Had hearing aids only for the last 7 years, they help but do not replace the missing frequencies so my high frequency loss effect around background noise has not changed and I still need to watch you speak or I will be hearing some very strange comments coming from your mouth and spend some time attempting to figure out what you really said. No disability from the VA, although I just have started on the groundwork to make a claim. Two types of forces when working around guns, blast and strong sound waves. Each gun has different frequencies. Small arms, 40 MM, 3"50, 5" 38s and 8" 55 were the guns I was around, it was the 3" 50 and the 40 MM that did most of the damage. Was gun captain and had a headset over one ear and kept the other open to listen to the crew and loaders working, hours of this resulted in switching ears with the phone headset.
  9. Nice Turks Head on that anchor fluke, must have been some rib pain experience triggering it's being made and secured there. jud
  10. Was sent to the Air Force hospital at Cam Ranh Bay in 68. Watched a guy come out of the sound proof booth where he had had his hearing tested and boy did he get an *** chewing. I was sitting there thinking, I'm next. The first words that were directed at me as I was exiting that booth was a statement about having been around a lot of jet aircraft. I hadn't, just guns, same frequencies were lost as those on your flight lines apparently. jud
  11. In 59-60 the US Navy Recruit Depot in San Diego was still teaching how to handle a whaleboat under oars.
  12. Sounds bad to some of us, but when you think about what is normal at the time, that's life and few or any felt sorry for themselves. I don't feel sorry for the seamen of old because of the conditions and the times they lived, they were a tough bunch. Gunfire topside is hard on your ears, an explosion within a confined space also hurts eardrums but explosions in confined spaces destroy ships and were avoided. Gun muzzles were outboard when the gun was fired and the blast wave went outboard. Does concussion from guns harm hearing, yep, I wear two hearing aids, they help a little but some frequencies are gone and no hearing aid in the world can bring those frequencies back, perhaps a vibration device implanted in bone could, but don't expect the VA to pay for such an operation. Suspect that there was more hearing damage done on the weather decks than on the gun decks under normal conditions.
  13. Bought 100 feet of 1/4" cotton rope, tied a 8 turn Monkey Fist on the end, 'took 8 turns to cover the dog chew ball in the core', Drying now from washing and bleaching, be stretching it later. Plan on making it up and hanging on the wall for a decoration. Everyone needs to have a Heaving Line hanging on the wall. No squeaker in the ball, it's a stealth Heaving Line. jud
  14. Balance, good handhold, also a good place to lash rigging to while moving or securing the gun and Uncle Carly tied his teeth to them while sleeping, being a good fiddle player, allowances were made for him. jud
  15. A quick look also answered a long standing question about Wales. The recovered and photographed hull sections show that the Wales were beveled so they could slide off of the wales of another ship, docking structure or whatever they might encounter. Shows me that instincts were right about the edge shape of these important hull protectors. Thanks for the link. jud