POLAND_SPUD wrote:well I wasn't referring to the back pressure only... I meant that turning them on/off all the time puts more wear on the parts and the motor
I am not saying that you have to get a tank... I am only suggesting that it makes life easier in the longer run...
I usually start the compressor under no load as I have two ball valves on the setup.. one between the tank and the compressor and one for venting the volume between the tank and the compressor..
so actually I can close off the tank, vent the air that on the air output, turn the compressor on and then open the tank (it's usually already at 250 psi as I see no point in venting it after each use) and I have lots of air at hand, which translates to -> no waiting
There is no real wear issue with start stop.. It tends to eat the contacts in the start relay. Many AC motors are built for constant start stop operation including machine tools and elevators.
Refrigerators don't like it due to the heat build up from repeated use of the high current start up and high head pressure. The motor in the can isn't very well cooled for repeated short cycling.