Mr.P
oud<3er
Each pump is a very small amount of air - it is a three stage pump and force is required and air is driven on both the up AND down pump. There is a fat outer cylinder, looks like the diameter of a typical bike pump... but the inner tube that has the plunger that pushes air into the tank is pencil-thin and the plunger in that is maybe 1/8" diameter. The outer tube does some pre-compression before passing the air to the inner high pressure tube.bloody hell, I can only imagine! I inflate my bicycle tyres to 90-100PSI and that takes some pumping! Guess it doesn't push out as much pressure as yours though
I guess this creates mechanical advantage hydraulic style... once I get around 4000 psi I barely weigh enough (175 lbs) to depress the handle... the tanks can hold up to 4500 psi but I would have to gain 50 pounds to reach those pressures. I fear if I keep this up I will destroy my wrist joints. So a compressor is on the way. Maintenance of this compressor will be an adventure in itself. Inexpensive... so maintenance will be ongoing.
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