I have a small air compressor I use for brad and pin nailers. I was thinking about connecting my AC with a 5 gallon air tank; the idea is to reduce the recover time the compressor runs. By doing this, do I really save on overall run time? With the tank, I can drive more nails before the AC cycles, but the AC runs longer to fill the tank.
Plus you need to understand that the actual "run time" when the compressor kicks on will double, triple, etc. depending on just how much larger your new tank configuration will be. You may want to consider that you will be asking that compressor motor to possibly work much harder than it may have been designed to run. In other words, extended run times will shorten the life of your compressor.
I have done this and am currently using a small Hitachi compressor tied to a 17 gallon tank that used to be a Lowes compressor that I cannot get parts for! It definitely does take longer to fill BUT, as jmartel says above, it takes a lot longer to get to the point when it needs a refill.
This has worked very well for me and I am glad I did this!
The tanks are tied together with an open air hose.
Good luck with yours!
I would be worried about exceeding the duty cycle of the compressor. You mentioned it was a "small" compressor, if adding a 5 gallon tank to a 1 or 2 gallon compressor I would certainly recommend against that. If it's a 20-30 gallon compressor, an extra 5 gallons wouldn't represent nearly as much extra work on the motor and pump.
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