While there is some validity to the extra air tank or volume idea the water tank idea is dangerous. I know of two deaths in our county alone that stemmed from using water tanks for air pressure storage. A water tank is designed for 60psi and is probably tested to 1.5 times that (normal testing practice) which is 90psi. Most air compressors shut off at 130psi so eventually you will have a problem depending on your luck. Propane tanks are tested to 240psi which is OK but the perfume propane odour is almost impossible to get rid of. A better idea is to buy an air pig used for carrying air to flat tires etc and they are available almost at any supply store. They can be plumbed into the line and are a safe way to increase volume as well as an inexpensive one. Horsepower ratings on the new compressors are often bogus. There are 750 watts in a horsepower (in round figures)so a 6hp motor would draw 4530 watts which is almost 40 amps. I say this because I just bought a Sears 5hp to replace my old Camp Haus 2hp but when I checked the specs they are identical units both drawing 15 amps and producing approx 6 scfm at 90psi. Don Dulmage |