[HumblePie]

Here's the result of our offseason project:

We have 4 fixed 3" barrels, all plumbed to a single manifold. The manifold has 3 Clippard tanks plumbed into it, giving approximately 100 cubic inches per shot. Each barrel is plumbed to the manifold through a fairly pricey 1/2" air piloted valve, salvaged from a piece of production equipment slated for disposal at our main sponsor. The manifold is recharged between shots via the compressor and a 2 gallon tank. Manifold refill takes 1.5 to 2 seconds. The ball valves shown are used to precharge the tank and/or manifold with shop air to lessen the load on the compressor (30% duty cycle). Short shots take about 40-50 psi and a full 100 psi charge results in distances of about 90 feet, depending on rolling skill. We use a short section of the barrel material to check the roll, looking for a slight interference fit.