Phase 1 begins

As with all projects, an initial proof of concept CAD design must be created, prior to making the detailed plan (this is a 3d CAD blog after all).

Voila,

The cannon:


This cannon is to scale (in that the correct barrel-Chamber ratio is present)

Parts:
50mm PVC 5-bar piping (barrel)
75mm PVC 5-bar piping (chamber)
75-50mm reducer
screw-in 75mm bushing

Piezo-electric ignitor
Screws (for internal spark-gap)
Computer fan (to ventilate the chamber, for the effects of a fan upon performance, see here)
12v lead acid battery (to run the fan)
Key switch (safety for the firing)
Big red button (or something similar)


And here's a concept carriage mechanism (this is completly concept).


Right, on to the purchasing stage...