soundclip of 30 bps blowback cycling (no paint yet)

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  • nerobro
    Registered User
    • Oct 2001
    • 923

    #46
    First to answer hitechs point.

    As pressure drops off in the spyder it will take longer and longer to cycle. It will also run into cycling issues. It will never "get better" with time. When we did the testing to see how long the spyder would take to recock it was running less then 400psi. With the current setup it's being fed 800+psi.

    The gun won't take longer than 20ms to cycle. Now Given that 20ms is the time it takes to cycle, that points that the gun is resting for 15ms between shots at 30bps. And that seems to agree with the data we've been shown. If the gun were not cycling properly, there would be a "beat down" effect, and you'd see the period between bursts of air drop.

    Also, if the gun were not catching the sear, it the rate of fire would most likely not match the 30bps we have it set for. and that the gun IS fireing.

    There are many possiable reasons for the solinoid not unlatching for that last shot. We're running 12volts through a solinoid that normally would only see 6-8volts. Given the 6ms pulls and that it fires for half a seccond the innner coils on the solinoid could be heating enough that it's not pulling the sear far enough. Though that's something we'll be working on this weekend. The frame is still being debugged.

    What would help is constructive criticism instead of the "we dont' believe you" factor. Though it appears we're on our own for the tuning.

    Shartly:

    You bring up many valid points. What it comes down to is that the gun is functioning fine. It's the frame that's the issue. It's failing the drop the sear on that last shot. the gun IS recocking though.

    From what I've seen no matter what evidence is provided, it will not be believed.

    I'm anoyed because it's questions that have been answered before, several times. Same as "why dont' mags have more range"

    And then just to quell any questions if the gun were cycling or not.

    If the gun were not catching the sear, due to the pressure dropoff the gun's cycle time would change. Also if the gun were not cycling properly it would not engage the sear at the end of the burst. Also if the gun were not cycling properly it would be cycling at a rate of about 20ms instead of 35ms. *sighs*

    for us to produce a sound file of a spyder doing 30 bps without the frame functioning as we say we'd need to add massive weights to the bolt and hammer. The bolt and hammer are both stock peices.

    The gun can't be "partially" cycling. We can also post a demonstration of the gun at 20 and 25bps to show we have control of the rate of fire.

    Before 314159 made the 30bps sound file. He called me and demonstrated the gun at 20 bps as well. We have control of the rate of fire. If the gun were not fully cycling we would not have this control.
    To be an AGD supporter, one cannot be an AGD bigot. -Nero

    Truth is a complex thing. One must govern by simplicity. -M. Mercier, special counsel to his Majesty for domestic matters. The Brotherhood of the Wolf

    "You can't outrun Death forever, but you can make the bastard work for it."

    Comment

    • hitech
      Not a shedder of vortices
      • Nov 2001
      • 4775

      #47
      Originally posted by 314159

      in the end, there is no data that anyone can post that can be 100% concrete.
      Doesn't need to be 100%. However, the fact that you timed a single cycle that took 20ms and the 30bps cycles are taking longer is just not good enough, IMO. Get it to fire paintballs on video (even at 24fps), combine that with the sound clip and you would have something. Maybe not 100%, but it would impress ME.


      Hey Hitech your starting to sound like me! - AGD
      Hitech is the man.... :eek: - Blennidae
      The only Hitech Lubricant

      Comment

      • 314159
        Registered User
        • Nov 2001
        • 555

        #48
        Originally posted by nerobro
        We're running 12volts through a solinoid that normally would only see 6-8volts
        all of this was done with the power supply set to 9 volts
        As society and the problems that face it become more and more complex and machines become more and more intelligent, people will let machines make more of their decisions for them, simply because machine-made decisions will bring better results than man-made ones. Eventually a stage may be reached at which the decisions necessary to keep the system running will be so complex that human beings will be incapable of making them intelligently. At that stage the machines will be in effective control. People won't be able to just turn the machines off, because they will be so dependent on them that turning them off would amount to suicide

        sometimes I just freaking hate people. which means the next day I will love them for the sake of balance, but right now I will just concentrate on the hating. Hate hate hate. Blaaaarg! ;)

        turborev - with ai like this, if it controlled any more than a paddle, it would kill you and everyone you care about. ;)

        Comment

        • hitech
          Not a shedder of vortices
          • Nov 2001
          • 4775

          #49
          Originally posted by nerobro
          First to answer hitechs point...
          I posted before reading this. I'm on my way out, but I will read what you wrote and reply later, if anyone cares.


          Hey Hitech your starting to sound like me! - AGD
          Hitech is the man.... :eek: - Blennidae
          The only Hitech Lubricant

          Comment

          • 314159
            Registered User
            • Nov 2001
            • 555

            #50
            Originally posted by hitech
            IMO. Get it to fire paintballs on video (even at 24fps)
            I don't have a video camera, i did buy a webcam on ebay that could do 640x480 @ 30 frames, but got f***ed and am stuck with a bunk camera. I just payed tuition, i think that i am going to be a little poor for a while.

            Originally posted by 314159
            right now i am going to put my time into my projects, and let the unbelivers fall where they may.
            As society and the problems that face it become more and more complex and machines become more and more intelligent, people will let machines make more of their decisions for them, simply because machine-made decisions will bring better results than man-made ones. Eventually a stage may be reached at which the decisions necessary to keep the system running will be so complex that human beings will be incapable of making them intelligently. At that stage the machines will be in effective control. People won't be able to just turn the machines off, because they will be so dependent on them that turning them off would amount to suicide

            sometimes I just freaking hate people. which means the next day I will love them for the sake of balance, but right now I will just concentrate on the hating. Hate hate hate. Blaaaarg! ;)

            turborev - with ai like this, if it controlled any more than a paddle, it would kill you and everyone you care about. ;)

            Comment

            • Butterfingers
              PhD in Automagology
              • Jan 2001
              • 2263

              #51
              Nero,

              if a constant lower pressure air supply than what is required to cock the gun is implemented into a system it will result in freecycle oscilations at a rate that is adjustable by tank pressure as long as the pressure is constant.

              Am I NOT saying this is what it is happening.

              But I am saying that a spyder will not "beat down" if it fails to catch the sear. Given a steady air supply it will go into freecycle oscilation.

              I am pretty sure you know what happens if you wedge the sear down. If you put a co2 tank into hot water and release the hammer it will freecycle until the thing is nearly empty.
              Did you hear about the new european weapons contracts? France is going to make the wooden sticks Spain making the little white flags

              Comment

              • Muzikman
                Everything AGD
                • Dec 2000
                • 6229

                #52
                Are you guys going to be available to demonstrate this gun to me in person when I am out there for Shatner? I will have my vid cam and I will throw a decent mic and my potable mixer in my bag and bring it with me. We can get it on video and with decent audio (or at lease audio that doesn't sound like it was done with a tin can and shoe string)

                Greg, as you know I am a believer. I know you well enough to trust what you say. I just want to see for myself and maybe capture enough to impress the non believers

                You think it will be working well enough to do this? You also think that it will be working well enough to put some balls through it? I have some Nylon balls that I will bring so that we don't have to make a mess. These balls have pretty close to the same size and weight as a paintball.

                Comment

                • nerobro
                  Registered User
                  • Oct 2001
                  • 923

                  #53
                  we'll have a gun that's testable in time. right now it seems the biggest issues stem from the fact it's on a breaboard and components are working loose.

                  right now there is some valve damage on the gun that needs to be repaird... but being a spyder clone that's not too difficult. I'll update you later on that progress.
                  To be an AGD supporter, one cannot be an AGD bigot. -Nero

                  Truth is a complex thing. One must govern by simplicity. -M. Mercier, special counsel to his Majesty for domestic matters. The Brotherhood of the Wolf

                  "You can't outrun Death forever, but you can make the bastard work for it."

                  Comment

                  • rikkter
                    • Jun 2002
                    • 1804

                    #54
                    i jsut read this whole thing because i found t he aruging interested. both people are smart and know what they're doing. but i only understand 10% of what they said!
                    viking #619

                    Comment

                    • 314159
                      Registered User
                      • Nov 2001
                      • 555

                      #55
                      Originally posted by nerobro
                      we'll have a gun that's testable in time. right now it seems the biggest issues stem from the fact it's on a breaboard and components are working loose.
                      actually what was happening was in the control circuitry for the solenoid. the first mosfet was trying to draw a little too much power from the pic microcontroller. doubled it's resistance, works great now. you want to go with as low of a resistance as you can, because it affects the switching speed of the mosfet, it would appear that i was on the borderline of slightly too low. i guess that it is not really a big deal, because the switching speed is usually measured in nanoseconds but still, every little bit helps.
                      As society and the problems that face it become more and more complex and machines become more and more intelligent, people will let machines make more of their decisions for them, simply because machine-made decisions will bring better results than man-made ones. Eventually a stage may be reached at which the decisions necessary to keep the system running will be so complex that human beings will be incapable of making them intelligently. At that stage the machines will be in effective control. People won't be able to just turn the machines off, because they will be so dependent on them that turning them off would amount to suicide

                      sometimes I just freaking hate people. which means the next day I will love them for the sake of balance, but right now I will just concentrate on the hating. Hate hate hate. Blaaaarg! ;)

                      turborev - with ai like this, if it controlled any more than a paddle, it would kill you and everyone you care about. ;)

                      Comment

                      • AGD
                        The man from AGD

                        • Oct 2000
                        • 5916

                        #56
                        After reading this for the first time I too am questioning if it is cycling full stroke. It is possible for a blowback marker to run low on air pressure during full auto and short stroke. The shorter stroke releases less air and the regulator can catch back up where the gun starts going back to full strokes.

                        The sound profile does not seem to indicate that subsequent shots are lower but you really need to put a senosr on the stroke for every shot.

                        AGD
                        sigpic

                        Comment

                        • Muzikman
                          Everything AGD
                          • Dec 2000
                          • 6229

                          #57
                          Tom,
                          you willing to lend us some sensors in a little more than a week?

                          Comment

                          • 314159
                            Registered User
                            • Nov 2001
                            • 555

                            #58
                            got bored on sat, and threw a little something together





                            let's just say that as far as heat disipation while soldering, on top of the location i ended up creating my gorund busspoint is not the ideal location for small devices. next weekend, or whenever i have some time, i will throw together another board differently that will alow me to swap out something easily if i overheat it a little.

                            i am thinkin about being lazy and just ordering some boards from http://www.olimex.com/pcb/index.html
                            As society and the problems that face it become more and more complex and machines become more and more intelligent, people will let machines make more of their decisions for them, simply because machine-made decisions will bring better results than man-made ones. Eventually a stage may be reached at which the decisions necessary to keep the system running will be so complex that human beings will be incapable of making them intelligently. At that stage the machines will be in effective control. People won't be able to just turn the machines off, because they will be so dependent on them that turning them off would amount to suicide

                            sometimes I just freaking hate people. which means the next day I will love them for the sake of balance, but right now I will just concentrate on the hating. Hate hate hate. Blaaaarg! ;)

                            turborev - with ai like this, if it controlled any more than a paddle, it would kill you and everyone you care about. ;)

                            Comment

                            • -=Squid=-

                              #59
                              You guys know that you can hit 20bps with paint EASILY (we used some crappy steal PMI tank) aand my halo on some kids dragun, no chops, no problems. It was the "snipar" edition that has a multifunction board and an lCd.

                              Comment

                              • FutureMagOwner
                                Registered User
                                • Dec 2001
                                • 3354

                                #60
                                um this thread is almost a year old squid..

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