My IOD M01 design which is similar to Andy Gustafson's PAC4
but has a few modifications. My first modification was to reduce the ammount of stress points the high air pressure had to flow
through after being fired. At the 2" T, I turned it at a 45 degree angle and added a 45 degree elbow to put the firing
chamber parallel with the air chamber.
I also added a ball valve and air compressor hookup right above the second
solenoid valve.
I went a little whacked out on the electrical firing system for the IOD M01.
I have three rechargeable 9volt batteries which fire the solenoids when
two monetary switches are pressed and the keylock switch is in the ON
position.
But thats just the beginning of it. The bottom switch (harder to press) triggers a 24v DPDT relay
that not only activates the second switch, but also activates the 3v laser pointer attached to the
cannon. When the laser dot is where you want it, you just press the second switch and KA-BLAM-O!
"What there's more?" Yup, I also threw in a 25ft wired remote switch that can activate the laser
and fire the cannon. Talk about the best of both worlds!
Now I do regret on skipping one of the items Andy includes on his PAC4.
The item is the 1" union. In fact, before I was going to build my new IOD M02, I
was going to add two unions to the IOD M01. Except I ended up blowing all the money
for the IOD M01 on the new IOD M02. Oh well, I will probably fix it later ($8.00 fix).
The reason for wanting the unions is the ability of making the firing
mechanism square and straight. I was having so much fun glueing
everything together, that I ended up glueing the 2"x1" couplers into the 2" T's
before I realized what I had done. Looking at this picture you will notice what
I had to do to fix it. It was not pretty and took some muscle, while at
the same time hopeing the pipe wouldn't snap.
Key: S = Solvent connection, T = Threaded connection.
Items needed for air and firing chamber:
ITEM: | COST: | QTY: | Total: | LOCATION OF PRODUCT: |
| 4ft. 3" PVC pipe | $4.58 | 1 | $4.58 | (Once I find out) |
| 10ft. 2" PVC pipe | $3.90 | 1 | $3.90 | Eagle Hardware |
| 3" PVC Cap | $4.05 | 1 | $4.05 | White W R Company |
| 3" Coupler SxS | $2.16 | 1 | $2.16 | Eagle Hardware |
| 3"x2" Reducing Bushing SxS | $2.06 | 1 | $2.06 | Eagle Hardware |
| 2" PVC Tee SxSxS | $0.99 | 2 | $1.98 | Eagle Hardware |
| 2" Female Adapter SxT | $0.52 | 1 | $0.52 | Eagle Hardware |
| 2" Male Adapter SxT | $0.54 | 1 | $0.54 | Eagle Hardware |
| 2" PVC 45 ELL SxS | $1.19 | 1 | $1.19 | Eagle Hardware |
| 2 3/8" long, 1/4" wide metal rod | $0.00 | 1 | $0.00 | Already had |
Sub Total: $20.98
Items needed for firing mechanism:
ITEM: | COST: | QTY: | Total: | LOCATION OF PRODUCT: |
| 2"x1" PVC Reducing Bushing SxT | $1.16 | 4 | $4.64 | Eagle Hardware |
| 1" PVC 90 ELL TxT | $1.38 | 3 | $4.14 | Eagle Hardware |
| 1"x3" PVC Nipple | $0.42 | 7 | $2.94 | Eagle Hardware |
| 1" Electric Inline Valve TxT | $11.95 | 2 | $23.90 | Eagle Hardware |
| 1" PVC Male Adapter SxT | $0.46 | 1 | $0.46 | Eagle Hardware |
| 1" TEE SxTxS | $0.85 | 1 | $0.85 | Eagle Hardware |
| 1"x1/2"x1" TEE SxTxS | $0.00 | 1 | $0.00 | Eagle Hardware |
| 1/2"x1/4" Galv Bushing | $1.19 | 2 | $2.38 | Eagle Hardware |
| 1"x1/2" PVC Bushing SxT | $0.31 | 1 | $0.31 | Eagle Hardware |
| 1/2"x2 Galv Nipple | $0.36 | 1 | $0.36 | Eagle Hardware |
| 1/2" Ball Valve | $4.89 | 1 | $4.89 | Eagle Hardware |
| 5PC Brass Couplers 1/4 | $4.99 | 1 | $4.99 | Eagle Hardware |
| Water Hose Pressure Gauge 200psi 1/4" | $8.99 | 1 | $8.99 | Home Depot |
| 1/2" Teflon Tape | $0.96 | 2 | $1.92 | Eagle Hardware |
| 1ft. 1" PVC pipe | $0.37 | 1 | $0.37 | Eagle Hardware |
Sub Total: $61.14
Total Cost: $82.12
That is the complete cost for the base unit of the IOD M01 air cannon. Pricing for the electrical battery box won't be
posted until I find the majority of the receipts. The sad part, is that I know the battery box w/switches cost almost half of what the
base unit cost is!
The schematic's for the electrical system will be posted as soon as I figure out what I did with them. Its not too complicated though.
The relay could be omitted if you get a hold of a DPDT monetary switch,
but I find the relay kind of cool! I originally wanted a DPDT switch but
I couldn't find one when I needed the switches right away.
Copyright © 1997-2018, Imperium of Darkness BBS
I also added a ball valve and air compressor hookup right above the second
solenoid valve.
I went a little whacked out on the electrical firing system for the IOD M01.
I have three rechargeable 9volt batteries which fire the solenoids when
two monetary switches are pressed and the keylock switch is in the ON
position.
But thats just the beginning of it. The bottom switch (harder to press) triggers a 24v DPDT relay
that not only activates the second switch, but also activates the 3v laser pointer attached to the
cannon. When the laser dot is where you want it, you just press the second switch and KA-BLAM-O!
"What there's more?" Yup, I also threw in a 25ft wired remote switch that can activate the laser
and fire the cannon. Talk about the best of both worlds! 
The reason for wanting the unions is the ability of making the firing
mechanism square and straight. I was having so much fun glueing
everything together, that I ended up glueing the 2"x1" couplers into the 2" T's
before I realized what I had done. Looking at this picture you will notice what
I had to do to fix it. It was not pretty and took some muscle, while at
the same time hopeing the pipe wouldn't snap.