The graph below shows the actual force of a competitive pump increasing on the downward stroke at 3000 psi. It takes a great deal of strength to push down the last 2 inches of this pump and doing it multiple times is exhausting.
Below is the same data for the Crosman Turbo Aire pump. Notice the force on the handle builds immediately to a maximum of 100 pounds and levels off. The work done is actually the same between the two pumps (area under the curves), but the Turbo Aire pump does a better job of distributing the force over the stroke of the pump. HOW?! When you press on the handle of the Turbo Aire pump you do not press directly on the piston rod; you are pressing on a system of levers that are specifically designed to minimize the peak force by creating the force profile you see below.
I use an inexpensive Harbor Freight compressor with regulator to boost the input pressure to the hill pump. I vary the boost pressure from 60 PSI to 10 psi depending on how high of a pressure I need. I use a kilowatt meter on the AC line to measure the amperage used by the motor. The 1 horsepower motor is rated for about 9 amps. So adjust the regulator for about 8 amps to not overdo it. The output of the Harbor Freight feeds through particle filter water trap and a desiccant filter then into the MK3. I'm still on my original O-rings. If I push it maybe I can go for two minutes to session but maybe you'll burn out the O-rings quicker. I never even break a sweat.
I'm asking if you can boost just the hand pump, not along with the automated machine.
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