The pictures in my original thread on this topic were compromised.
How to build a naval carriage.
Pick up the wood 2" X 12" X 12'
Red Oak
Rough out the sides and wheels and front transom
transom is cut with a 2 1/2 degree angle on each end. This will make the carriage narrower at the front and wider at the rear.
This part is easy.
Glue stock for axles
turn axles on the lathe
Make the cuts to mate the side cheeks with the axle. All cuts have to be done at 2 1/2 degrees also. Same with any hole drilled in the cheeks.
Also make the leveling platform.
The angles make everything harder.
Drill the 2 1/4" trunnion pockets where the barrel will sit at 2 1/2 degrees.
The barrel will be secured in these pockets with capsquares. These are secured to the cheeks with bolts that run vertically through the cheeks and the axle also. Since these bolts are long (16" in two cases), I mark where I want the hole to start and where I want the hole to end, then connect with a line. Notice the pencil line on the cheeks.
I have to drill from both sides, top and bottom and get the holes to meet in the middle. I start with a spade bit but can only get 4 1/2" deep.
Then I flip the piece and drill from the other side. Note that I had to tilt the table to get the right angle. I put a straight edge in the drill press and tilt the table till it matches the penciled line.
Then I put a 15" spade bit in a hand drill and finish the cut. Total length of the cut was 11 1/2".
Then the holes have to be continued at the proper angle through the axle. I use the long spade bit to start the hole taking care to stop before I drill through the shop floor.
Then finish the hole with a regular bit .
All holes line up.
Note the 2 1/2 degree cut in the axle picture.
Front bumper guard is made to go under the transom and lock into the axle for strength.
I don't have the barrel, which in this case was made during the war of 1812, so I have to make a simulated trunnion to make sure everything fits together properly.