R/C Naval Combat

So, basically all I need to do is find a compressor that goes pretty far above 150 psi, mount an accumulator and put one of BC's regulators on the other end? Then just have a cutoff in the accumulator so it dosn't explode? Sounds pretty sweet!

You can also make your own pressure cutoff, if you want. You just need a spring pushing one way, a piston pushing the other way, and a N.C. momentary switch. When the compressor starts up, part of the pressure goes into the piston. As pressure rises, the piston pushes against the spring, and once the pressure is high enough, the piston pushes the momentary switch, shutting off power to the compressor. Adjusting the pressure can be tricky, but by switching springs or adding an adjustment screw, you can reach legal pressures. This is how they used to make cutoff switches before Dwyer and others were readily available.

You can see one of these old-style cutoff switches in the photo showing the all the different designs. Depending on your skill and material choices, it may be lighter than the Dwyer switch.

As for which Dwyer switch to get, just think of adding pressure as pressing the button. So the "normal" state is without pressure. I believe you will want a normally closed model.

Are there any specific models of donor compressors that you know of (such as those at auto parts stores) that have guts on the smaller end of the small compressor spectrum?