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This is the Stern gun of Jason Quinn's German Z Boat. The gun uses three position traversing and mechanical elavation.
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The Clippard Regulator is available at your local Clippard dealer, Fleming or Cozart can get one for you.
Building Loaders
Fleming's Barrel holding Piston loader
I can not cut threads. So I use half of a 1/4 inch (1/8 27 thread) pipe union to screw the loader into the valve.
1. Cut a piece of 3/8 hex brass to about 2.5 inches.
2. Cut 1/8th 27 union in half.
3. Place hex brass in lathe. Reduce one end of brass hex so the half union will slide on about 1/4 inch.
4. Drill #11 hole all the way through the brass.
5. Drill the magazine port about 3/4inch from the bottom (union end), drill a 1/4 inch hole at an angle of 80 degrees. This gives a 10 degree magazine angle.
6. Drill a #12 hole down from the top and intersect the magazine port.
7. Measure the distance from the top down to where the magazine port intersects.
8. Using the dimension in step 7 drill a 1/4 (this assumes you are using 1/4 ID steel break line for your vertical and turn) hole .375 of an inch less than the dimension. This will let you install the barrel steel into the loader.
9. Solder the threads on the hex and a one inch magazine tube.
10. From 1/4 inch brass stock make a piston. Drill a #9 hole through the center.
11. Place piston stock in lathe. Reduce one end to fit loosely in the #11 hole in the loader. This part of piston when topped out must bock enough of the magazine to prevent shot from entering. It should be slightly less than half of the shot diameter. If the piston is too tall it can be jammed and held in the up position.
12. Cut bottom of piston off even with the bottom of the threads.
13. Screw into valve roll a ball in. Ball should not rest on piston, it should drop into the #11 hole.
The photo below shows the two forward guns of the HRMS Isaac Sweers that use this type of loader.
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Shaw/Harter's Method ...No Piston
1. Silver solder a ten degree magazine tube about 3/4 inches from the end.
2. Run a drill bit through to open the hole. Run the bit up the vertical tube also.
3. Cut 1/4inch pipe union (1/8th 27 threads) in half and silver solder on the lower end.
4. Slide a small piece of brass tubing inside for the ball to sit on. Adjust so the second ball in the magazine will not get over center on the fisrt ball. Glue or solder tubing in place.
An alternate method of preventing the ball from dropping down the tube is center punch a small dimple in the tube opposite the magazine tube. Be careful here, with this method is you must get it exactly right. Too high and it won't load, too low an it will fire multiples.
It should be noted these two different types loaders can not be matched up on the same ship. They use different firing pressures. One or the other will not pass the peneteration test. Either one will have too much pressure or the other not enough.
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The piston loader pictured above is designed to attach to the barrel with flexible tubing for adjustable elevation or can be used in the Single Traversing Gun Method in the drawing above.
The dimensions and drill sizes shown here are for 3/16 shot. The same designs are used for 1/4 inch shot.
These are two variations on making loaders. The best design is one that works for you.
Guns in general
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Jon Charbonneaux came up with this variation of a trunion mounted gun.
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This is the stern turret of HMS Exeter belonging to
the Honorable Sir Ralph Gibbons MBS, MSB VDL. Bob Cozart designed and
built the guns using Lexan and PVC. The only commercial parts are the
Clippard Actuators. Paul Fleming mounted the gun on an aluminum bar
which bolts into the ship. The gears are molded using casting resin.
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Cliff Shaw built three ship sets of this gun. This
is the stern turret of his DKM Lutzow. This is a radically different
design from other large caliber guns. It uses a single large valve to
fire all three barrels. It features a vacuformed magazine and is the
first gun to use the rolling barrel bar for elevation.
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Mike Harter built these guns for British Battle class Destroyer HMS Solebay. True enough the Solebay is a 724 class vessel and is only allowed to operate three guns at any one time. Depending on the mission Mike activates the guns that will function most effectively, or so he says.
I believe the real reason is if his ships are not just packed tight with lots of complicated stuff he is not happy. At this rate his USS Wyoming will not need lead balast Mike will use STUFF.
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Mike Harter built this gun for X Turret in his USS
Louisville. The gun is our standard Clippard fixed gun mounted on a
traversing unit. The barrel depression assembly was specially built by
Gary Powell. This gun has an extream amount of depression. It is
intended to discourage Destroyers from trying to run in under the main
guns.
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B turret on the USS Houston is a two gun unit that
fires through the outboard barrels. The magazine holds 140 rounds. Both
barrels are fired by the simgle internal valve. The trasverse is 240
degrees and the barrel elevation allows broadside engagement ranges
from 10 feet forward to 75 feet.
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This is the forward turrets drive for the Battleship Prince of Wales. Both turrets are driven by a 12vdc motor attached to reduction gearbox with an output of 60 rpm.
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