Subdeacon Joe Posted September 27, 2021 Share Posted September 27, 2021 As I was sitting at work thread gauging 82 parts with 22 8-32 holes (ok, 11 but tapped from each side), I got to thinking: What are the thread dimensions of the breach of a 16 inch,50 caliber Mark 7 gun? Major OD, Minor OD Pitch Diameter Threads per Inch And, what size thread wires would you use? Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 ....... bloody big ones ........ Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 ... please note: I am not a gunners mate, nor am I a gunner ..... Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 ...... I'm just gunner try to sneak off quietly ..... Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 ...please pretend that I wasn't here .... Link to comment Share on other sites More sharing options...
Pat Riot Posted September 27, 2021 Share Posted September 27, 2021 No idea. Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 27, 2021 Author Share Posted September 27, 2021 12 minutes ago, Wallaby Jack, SASS #44062 said: ...please pretend that I wasn't here .... NO! Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 4 minutes ago, Subdeacon Joe said: NO! ....... well, in that case, ....... I'm YOUR problem now .... Link to comment Share on other sites More sharing options...
Trailrider #896 Posted September 27, 2021 Share Posted September 27, 2021 1 hour ago, Subdeacon Joe said: As I was sitting at work thread gauging 82 parts with 22 8-32 holes (ok, 11 but tapped from each side), I got to thinking: What are the thread dimensions of the breach of a 16 inch,50 caliber Mark 7 gun? Major OD, Minor OD Pitch Diameter Threads per Inch And, what size thread wires would you use? No idea myself, but are you planning on building one? I don't think the Navy is using any of them anymore. Link to comment Share on other sites More sharing options...
Marshal Mo Hare, SASS #45984 Posted September 27, 2021 Share Posted September 27, 2021 Here’s something to contemplate. Everything that screws into a projectile in an upward direction, I.e. from base to nose, has left hand threads. as regards the weapons I worked on that would have been base plugs and time delay fuses. Link to comment Share on other sites More sharing options...
Tex Jones, SASS 2263 Posted September 27, 2021 Share Posted September 27, 2021 Here's some information from a manual from the 24th annual Technical Symposium of 1987, Department of the Navy. Table 111-2. 16'/50 Gun Barrel Data. on the BB-61 Component Gun Rear cylinder Slide cylinder MuzzleLiner at muzzle Liner at rear Slide cylinder Bore Powder chamber Rifling Dimensions Length 816 inches Weight 239,156 lbs (with screw box liner) 292,000 lbs (with recoiling parts) Outside diameter 49 inches Outside diameter 23 inches Outside diameter 23.5 inches Outside diameter 18.46 inches Outside diameter 22.10 inches Length 337 inches Diameter 16.00 inches Length 800.00 inches Length 105.82 inches Volume 27,000 cubic inches Choke diameter 17.50 inches Bore diameter 18.35 inches Length 682.46 inches Plating length 690 inches Groove depth 0.15 inches Number of grooves 96 Uniform right-hand twist Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 27, 2021 Author Share Posted September 27, 2021 21 minutes ago, Trailrider #896 said: No idea myself, but are you planning on building one? I don't think the Navy is using any of them anymore. No. Just one of those random thoughts. Using GO-NOGO thread gauges is somewhat mindless so my mind gets to wander. Today it went to REALLY BIG THREADS. Another question for Machinist Mates is what are the thread dimensions on the screw shaftson an Iowa Class BB? Do they even use a nut to hold the screw on? Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 27, 2021 Author Share Posted September 27, 2021 15 minutes ago, Tex Jones, SASS 2263 said: Here's some information from a manual from the 24th annual Technical Symposium of 1987, Department of the Navy. Table 111-2. 16'/50 Gun Barrel Data. on the BB-61 Component Gun Rear cylinder Slide cylinder MuzzleLiner at muzzle Liner at rear Slide cylinder Bore Powder chamber Rifling Dimensions Length 816 inches Weight 239,156 lbs (with screw box liner) 292,000 lbs (with recoiling parts) Outside diameter 49 inches Outside diameter 23 inches Outside diameter 23.5 inches Outside diameter 18.46 inches Outside diameter 22.10 inches Length 337 inches Diameter 16.00 inches Length 800.00 inches Length 105.82 inches Volume 27,000 cubic inches Choke diameter 17.50 inches Bore diameter 18.35 inches Length 682.46 inches Plating length 690 inches Groove depth 0.15 inches Number of grooves 96 Uniform right-hand twist Almost everything except the dimensions of the threads for the breach block. Link to comment Share on other sites More sharing options...
Forty Rod SASS 3935 Posted September 27, 2021 Share Posted September 27, 2021 1 hour ago, Wallaby Jack, SASS #44062 said: ... please note: I am not a gunners mate, nor am I a gunner ..... Are you a mate, Mate? Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 5 minutes ago, Forty Rod SASS 3935 said: Are you a mate, Mate? ....... nah, I get seasick just looking at a glass of water ....... Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 27, 2021 Author Share Posted September 27, 2021 1 hour ago, Wallaby Jack, SASS #44062 said: ....... well, in that case, ....... I'm YOUR problem now .... We love you just as you are! That's "love" in a manly sort of way. Link to comment Share on other sites More sharing options...
Wallaby Jack, SASS #44062 Posted September 27, 2021 Share Posted September 27, 2021 3 minutes ago, Subdeacon Joe said: We love you just as you are! That's "love" in a manly sort of way. .... thank you for qualifying that, .... I was a little worried at first ... Link to comment Share on other sites More sharing options...
Tex Jones, SASS 2263 Posted September 28, 2021 Share Posted September 28, 2021 Joe, If you really want to know, contact: ASSOCIATION OF SCIENTISTS AND ENGINEERS OF THE NAVAL SEA SYSTEMS COMMAND * DEPARTMENT OF THE NAVY, WASHINGTON, D.C. 20362 Link to comment Share on other sites More sharing options...
Larsen E. Pettifogger, SASS #32933 Posted September 28, 2021 Share Posted September 28, 2021 I remember seeing Mons Meg in Scotland back in the early 60s. Shot a 20" diameter rock. Link to comment Share on other sites More sharing options...
Sedalia Dave Posted September 28, 2021 Share Posted September 28, 2021 4 hours ago, Subdeacon Joe said: No. Just one of those random thoughts. Using GO-NOGO thread gauges is somewhat mindless so my mind gets to wander. Today it went to REALLY BIG THREADS. Another question for Machinist Mates is what are the thread dimensions on the screw shaftson an Iowa Class BB? Do they even use a nut to hold the screw on? Being as your a machinist think about the tooling required to cut those threads. Link to comment Share on other sites More sharing options...
Texas Lizard Posted September 28, 2021 Share Posted September 28, 2021 4 hours ago, Wallaby Jack, SASS #44062 said: ....... nah, I get seasick just looking at a glass of water ....... That sir, is two of us...No boats or oceans for me....And I am not a gunners mate either...Air Force, we drop ours...And then get the he$$ out of the area.... Texas Lizard Link to comment Share on other sites More sharing options...
Pat Riot Posted September 28, 2021 Share Posted September 28, 2021 4 minutes ago, Texas Lizard said: That sir, is two of us...No boats or oceans for me....And I am not a gunners mate either...Air Force, we drop ours...And then get the he$$ out of the area.... Texas Lizard “Boats”? Must be confusing the Coast Guard and the Navy… That’s okay. Thin air will do that to ya over time. Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 28, 2021 Author Share Posted September 28, 2021 17 minutes ago, Sedalia Dave said: Being as your a machinist think about the tooling required to cut those threads. I have, and do. Boggles the mind. http://www.navweaps.com/Weapons/WNUS_16-50_mk7.php https://www.oocities.org/fort_tilden/16ingun.html Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted September 28, 2021 Author Share Posted September 28, 2021 9 minutes ago, Pat Riot, SASS #13748 said: “Boats”? Must be confusing the Coast Guard and the Navy… That’s okay. Thin air will do that to ya over time. Aren't boats the things that sink surface ships? Link to comment Share on other sites More sharing options...
Marshal Mo Hare, SASS #45984 Posted September 28, 2021 Share Posted September 28, 2021 Having been a 13B4N, Field Artillery Gunner, 8” howitzers (Army), I’ll guess that that kind of information is not wasted on enlisted folks (even in the Navy) because the threads of the breach are not field reparable. If it’s damaged you need to send it to a higher echelon maintenance depot. The former Ordnance Captain might confirm that. Forty? Link to comment Share on other sites More sharing options...
Pat Riot Posted September 28, 2021 Share Posted September 28, 2021 7 hours ago, Subdeacon Joe said: Aren't boats the things that sink surface ships? Like I said “thin air”. Submariners call them boats too. But we all know they ain’t wrapped real tight so we let them have their way. Link to comment Share on other sites More sharing options...
Pat Riot Posted September 28, 2021 Share Posted September 28, 2021 When I was aboard ship I helped change out a barrel on a 5” 54 gun. What a betchathoughtIwasgoingtocuss! I seem to recall, and I may be wrong, I worked on Missile launchers, that the 5” was the biggest gun that the barrel could be changed out on without the aid of a Destroyer Tender or in port. I was there as grunt work. It took a bunch of us to get the barrel up and aligned. I wasn’t part of the process for attaching the barrel. Just lifting. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.