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gas powered air brush air compressor

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  • #16
    Originally posted by anotheridiot View Post
    Why is this based off of an air compressor and not just a vacuum pump? much fewer moving parts and slower rpm requirements.
    1) it's what the dentist wants.... never discount this, these people are risking their lives and not getting paid to do it.... even if it's a better idea, that better idea could result in the dentist saying "nope"
    2) because it's hard to fill an airplane tire with a vacuum pump - prior to this, they used a 12v air compressor I sent them (which got stolen)
    3) that said, volume and the need for oil in a vacuum pump. they do use the air compressor to create suction.
    4) weight - again.
    5) few parts? on the vacuum pump are fletches - each of those can wear, so I'm not sure where you get fewer parts.... two pistons, two reed valves is this air compressor.

    but even if you disagree... go back to number 1. and if next week the dentist gets a brilliant idea for a vacuum pump compressor - I'll build that too.
    Doing it all wrong since 1966

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    • #17
      Just asking, since its just being used for suction. I must have missed the airplane tire filling need in your earlier posts. Might even be a deterrent for theft since who wants a vacuum pump? I would think this gas driven deal is going to have a bigger bullseye on it.

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      • #18
        More "Sorry, can't help it" response from me.

        My vacuum pump weighs quite a bit .. not sure what that evil lady uses at the dentist office, but I'm betting it's more than 2.5 cfm too. I do *not* want her in my face with something designed to pull a medium vacuum for an AC system. haha.

        If we're talking primative, what about this thing? Sucks one side, blows on the other...

        Flying south, with a flock of bird dogs.

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        • #19
          Originally posted by Beagle View Post
          More "Sorry, can't help it" response from me.

          My vacuum pump weighs quite a bit .. not sure what that evil lady uses at the dentist office, but I'm betting it's more than 2.5 cfm too. I do *not* want her in my face with something designed to pull a medium vacuum for an AC system. haha.

          If we're talking primative, what about this thing? Sucks one side, blows on the other...

          you can use a vacuum to run air tools... why would you do that? I dunno - I'll have to see what happens with my vacuum pump (you know, the air powered one) tonight.

          I was surprised that such a small compressor could run air tools - that said, it's what they want; it's what they get. The weedeater should be here Thursday, so I'll know soon enough how it works.

          coincidentally, I just told someone that the welder that they bought was so old that it replaced bellows....
          Last edited by SuperBuickGuy; August 3, 2020, 11:06 AM.
          Doing it all wrong since 1966

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          • #20
            Originally posted by SuperBuickGuy View Post

            you can use a vacuum to run air tools... why would you do that?.
            I can think of one really good reason... if you run a grinder on a vacuum instead of positive pressure, it will add the metal you just accidentally removed back. I don't know if that will work with teeth though.

            Flying south, with a flock of bird dogs.

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            • #21
              Originally posted by Beagle View Post

              I can think of one really good reason... if you run a grinder on a vacuum instead of positive pressure, it will add the metal you just accidentally removed back. I don't know if that will work with teeth though.
              *snicker*
              bonus!

              that would save on filling material for the villagers.....



              now you own me a monitor....
              Doing it all wrong since 1966

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              • #22
                SBG is TOO polite. Not to say an idea sucks.....
                My hobby is needing a hobby.

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                • #23
                  Originally posted by RockJustRock View Post
                  SBG is TOO polite. Not to say an idea sucks.....
                  probably should mark that day on your calendar, it doesn't happen often... matter of fact, I can't remember once....
                  Doing it all wrong since 1966

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                  • #24
                    small engine electrical question... do you think the magneto on a 4 stroke gas weedeater motor has enough 'extra' juice to run a servo?
                    Doing it all wrong since 1966

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                    • #25
                      Originally posted by SuperBuickGuy View Post
                      small engine electrical question... do you think the magneto on a 4 stroke gas weedeater motor has enough 'extra' juice to run a servo?
                      They don't normally have charging coils, and the CDI is usually self contained... if it was like a bike rotor, you could probably add a charging coil but I think it's going to be external and that could be a treat to work out.

                      Pull the shroud and show us what you have to work with?
                      Last edited by Beagle; August 6, 2020, 12:20 PM.
                      Flying south, with a flock of bird dogs.

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                      • #26
                        Servo? As in R/C servo? Battery?
                        My hobby is needing a hobby.

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                        • #27
                          call this the mockup view. I keep thinking I should build this horizontally to keep the weight nearer the ground

                          whatever warranty this had.... it has no longer


                          weight is well within specs... 15 lbs

                          the flywheel is on the drive side...

                          just blowing all the warranties today...

                          I suppose it wouldn't be terribly hard to load test this - basically it shuts off the current flow - so if there was a tap, it'd be in this line



                          Originally posted by Beagle View Post

                          They don't normally have charging coils, and the CDI is usually self contained... if it was like a bike rotor, you could probably add a charging coil but I think it's going to be external and that could be a treat to work out.

                          Pull the shroud and show us what you have to work with?
                          your bike comment made me think of one of those generators .... hmmm

                          Originally posted by RockJustRock View Post
                          Servo? As in R/C servo? Battery?
                          yep.
                          Doing it all wrong since 1966

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                          • #28
                            I think you just pressed off a potential generator stator... ?
                            Flying south, with a flock of bird dogs.

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                            • #29
                              Originally posted by Beagle View Post
                              I think you just pressed off a potential generator stator... ?
                              yes but I needed the motor closer to the compressor... I did think of that...
                              Doing it all wrong since 1966

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                              • #30
                                just for giggles, I'd put the Milwaukee drill on that compressor and see if it would spin it.
                                Flying south, with a flock of bird dogs.

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