inonickname wrote:Do you plan to use a small bore and long stroke, or short stroke with large bore and a lever?
Initially air would start in a low pressure stage (large bore, short stroke) then move into progressively higher pressure stages (small bore, long stroke).
iknowmy3tables wrote:do you mean a plate backing the diaphragm to prevent bulging, or a general flange construction
how were you planing to power the diaphragm?
My thought is it would reduce the surface area of the membrane, while still utilizing the flexibility of the membrane.
Crankshaft, multiple stages. Got a 1HP motor with a 60:1 gearhead on it.
psycix wrote:When going 500+ psi, I think two-stage is the way to go.
HP for 1 CFM
2-stage-500 PSI output, cylinder ratio: 5.91, .342 HP
3-stage-500 PSI output, cylinder ratio: 3.27, .327 HP
3-stage-1,000 PSI output, cylinder ratio: 4.11, .383 HP
3-stage-1,500 PSI output, cylinder ratio: 4.69, .43 HP
^15% friction added to the theoretical HP.
jimmy101 wrote:You could make a 1000 PSI compressor from small id pipe and a suitable piston. With a 1/8" cylinder it would take just ~12 pounds of force and a ~70:1 compression ratio to get to 1000 PSI.
So now that I've been nudged off diaphragm pumps, back to piston style pumps. BTW, my interest is not to manually run pumps, so no shock pumps.
kenbo0422, that is a great idea. Now so I don't get any exercise, biggie size it