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Step 5Putting Some Of It Together
EDIT: As of recent, I have removed the back "stock" of the chamber. This is the bit with the 90 degree and two 45 degree elbows at the back. I removed this for a few reasons: to save weight (weighs about 12kg all up IIRC), more efficient (less air required to fill up the chamber to X PSI) and because I like it better without the stock.
If you are building this cannon from the start, it will also save you money as you don't need the extra elbow fittings. You can either have a 90 degree elbow going from the front chamber up to the piston valve Tee fitting or you can still use a tee fitting but block off the port where the "stock" would be with a simple end cap.
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Now you just need to put some of the fittings together. I started out with the stock and mid point.
Step 1:
Cut a piece of 2" pipe about 14cm long and solvent weld it to one of the horizontal ports on the 50mm PVC tee. The solvent weld one of the 45 degree 50mm PVC elbows to the other. Make sure the other socket of the 45 degree elbow is pointing up, not down when you glue it. Just look at the pictures. You should end up with a 6cm gap between the tee and the 45 eblow fitting as shown in the picture.
Step 2
Cut a piece of 2" pipe 20cm long and solvent weld one end to the 45 degree elbow connected to the tee, and then solvent weld the other 45 elbow to the other end of this pipe. Make sure the end port faces horizontal, as in the pictures.
Step 3
Cut a piece of pipe 7cm long and solvent weld it to the spare port on the 45 elbow. Solvent weld the 90 degree elbow to the other end of this pipe so the elbow faces down in relation to the 45's. The 90 degree and 45 degree fitting should now be flush. (no gap between them)
Step 4:
Cut a piece of 50mm pipe 11cm long and solvent weld it to the 90 degree fitting so it faces down, then solvent weld one of the end caps to the bottom of this pipe. Again just look at the pictures for reference.
Step 5
Cut a piece of 50mm pipe 800mm long (31"). Solvent weld this to the other horizontal port on the 50mm PVC tee. Look at the pictures for reference.
If you are building this cannon from the start, it will also save you money as you don't need the extra elbow fittings. You can either have a 90 degree elbow going from the front chamber up to the piston valve Tee fitting or you can still use a tee fitting but block off the port where the "stock" would be with a simple end cap.
______________
Now you just need to put some of the fittings together. I started out with the stock and mid point.
Step 1:
Cut a piece of 2" pipe about 14cm long and solvent weld it to one of the horizontal ports on the 50mm PVC tee. The solvent weld one of the 45 degree 50mm PVC elbows to the other. Make sure the other socket of the 45 degree elbow is pointing up, not down when you glue it. Just look at the pictures. You should end up with a 6cm gap between the tee and the 45 eblow fitting as shown in the picture.
Step 2
Cut a piece of 2" pipe 20cm long and solvent weld one end to the 45 degree elbow connected to the tee, and then solvent weld the other 45 elbow to the other end of this pipe. Make sure the end port faces horizontal, as in the pictures.
Step 3
Cut a piece of pipe 7cm long and solvent weld it to the spare port on the 45 elbow. Solvent weld the 90 degree elbow to the other end of this pipe so the elbow faces down in relation to the 45's. The 90 degree and 45 degree fitting should now be flush. (no gap between them)
Step 4:
Cut a piece of 50mm pipe 11cm long and solvent weld it to the 90 degree fitting so it faces down, then solvent weld one of the end caps to the bottom of this pipe. Again just look at the pictures for reference.
Step 5
Cut a piece of 50mm pipe 800mm long (31"). Solvent weld this to the other horizontal port on the 50mm PVC tee. Look at the pictures for reference.
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For the current barrel length, more chamber volume would do nothing. For a bigger barrel, it would be better.