instagram takipci satin al - instagram takipci satin al mobil odeme - takipci satin al

bahis siteleri - deneme bonusu - casino siteleri

bahis siteleri - kacak bahis - canli bahis

goldenbahis - makrobet - cepbahis

cratosslot - cratosslot giris - cratosslot

Announcement

Collapse
No announcement yet.

The Crusty KP3 - some interesting rental rebuild notes

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    The Crusty KP3 - some interesting rental rebuild notes

    A local field had a small fleet of KP3s for a "sniper" package with unlimited paint. When they put these up for sale, I decided I didn't want one, but the other guys in the group bought some. Little did I know that I would end up working on six of them plus a newer KP+. I figured it would be in my own best interest to fix these, since I had been shot with one or more with a bad reg. Very hot.

    I found the KP3s interesting. Lots of semi-auto hold over parts. I like the poppet design. The balanced pressure and huge hammer means it will shoot at very high pressure.

    One of the things that were relatively maintenance free was the front o-ring for the poppet stem in the pump arm. I replaced a few, but they were all in decent condition and never leaked after. Same with the pump arm sealing o-ring. The valves and valve bumpers were good. Detents were good. The valve body set screws were pristine (it was weird).

    Valve o-rings were generally trashed, as well as the reg piston o-ring.

    As a maintenance thing, don't leave paint on the powder coated bodies, the screws, or the hammer/mainspring. The screws are just plated, and they will rot. The hammer can grow enough rust to bind itself in place, especially with some powder coat flakes added. You also have to keep the trigger group clean, as it has several steel parts.

    I rebuilt all of the reg seats with 3d printed versions. I found the stiffer TPU, Prusaflex 98A, more responsive than the softer classic Ninjaflex. The softer seal would consistently creep to the setpoint for the last 25-50psi. The stiff TPU was more direct in sealing off.

    Replacement regulator seat for the KP3 (and similar) regs


    The thingiverse file has some notes on heating up the old seat and prying the top off, then pressing it all back together. None of the printed seals leaked, and I was on the receiving end of three of these KPs recently so I know they are working. 🙄

    I kept a pyrex dish with WD40 on the bench to drop steel parts into. These are the clean parts.



    This is what happens when they are not cleaned.




    The Chinese are pretty bad about the stabilizers they use in their urethanes, like the valve o-rings.


    Most of the seats looked like this, completely gone.


    Here's a seat that was partially there. The bits came from the top of the reg piston.


    Heating it up to pry off the top.


    The inside of the assembly.


    After cleaning it up and putting the new seat in, I squished it back together with some leather in the vise.

    If you don't have a printer, you could find a piece of urethane (6mm thick iirc), sharpen a brass tube on a rock, and drill yourself a new seat. It is mechanically held together, so it is fairly tolerant if you take care of the top cap (go slow, go around).

    Snap-ring pliers are very nice for getting the reg apart.
    Last edited by Spider!; 09-24-2023, 03:26 PM.
    Feedback

    https://www.mcarterbrown.com/forum/b...der-s-feedback

    #2
    Didn't know these had a balance valve, good to know.

    Sent from my Pixel 4a using Tapatalk

    Comment


    • Spider!

      Spider!

      commented
      Editing a comment
      That big metric wrench on the bench was for taking the pump arm off, 18 or 19 mm. There's an outer o-ring for the body and an inner o-ring for the poppet. Don't scratch the poppet.

    #3
    My reg just ate itself last night. I think I have the local high score on the chono. I was shooting at 472fps. I can't believe the balls weren't annihilating themselves at that speed! I'm printing/rebuilding it tonight. Glad you had this resource on here for that!
    Fred aka ChoSanJuan
    Team: With Intent
    Paintball parts and 3D Printed items!
    My Feedback

    Comment


      #4
      Had a teammates KP3 reg seat go out. Tried to test fire it with the reballs into my catch box. Ended up having enough speed to push through the hanging material, to the back wall of the catch box, bounce off the wall behind it, then ricochet back at me and nearly smacked me in the chest. They can shoot VERY fast if that seat goes off, haha.

      Comment


        #5
        So I followed the guide from good ol Rory and the seat retainer removal was much easier than using heat. Since it's press fit, it's not a big deal to use piece of leather or webbing to twist it off, without a torch. My reg pressurizes and holds without leaks now. Need to chrono, but it's worth it to print the seat and rebuild if you have access to a printer (or someone that has one)

        In this video we are looking at a Azodin KP3 with Regulator IssuesTo Get One Now Visit : https://www.ansgear.com/category_s/5520.htmFor more great paintball...
        Fred aka ChoSanJuan
        Team: With Intent
        Paintball parts and 3D Printed items!
        My Feedback

        Comment


        • Spider!

          Spider!

          commented
          Editing a comment
          I'll try without the heat again and add more twist next time. These markers were extra crusty and I was being careful with the tops.

        • ChoSanJuan
          ChoSanJuan commented
          Editing a comment
          Probably true with your crust level. Was just offering an alternative.

        #6
        Any more updates?

        Best,
        smiley

        Comment


          #7
          We played with the whole lot of them a couple of months ago. The only one that gave us trouble was the kp+ reg that I didn't rebuild because I didn't have a seat for that style and it looked ok. So much for looks.

          Not only did the kp3s Chrono well, but they felt normal too.

          I need some more ninja flex.
          Feedback

          https://www.mcarterbrown.com/forum/b...der-s-feedback

          Comment


            #8
            Yo was that purple one so crusty it at e the anno away

            Comment


              #9
              Originally posted by Psycho91 View Post
              Yo was that purple one so crusty it at e the anno away
              Yes, it was powder coated. The paint was left on some scratches to get it started, I imagine. Same with the plating. add a little storage container heat in downtown Houston.

              Overall, it's not the killer. There are several unplated parts inside that don't like paint/water. You need to keep them.... More clean than no cleaning at all.

              Some of these markers came back to me this summer with sear engaging "flipper" on the trigger crusted up, which i had failed to take apart and sand smooth before. These get stuck back in the crust and the trigger won't grab the sear; it just moves back and forth.

              Click image for larger version  Name:	IMG_20230612_133520035.jpg Views:	0 Size:	3.26 MB ID:	427918
              Feedback

              https://www.mcarterbrown.com/forum/b...der-s-feedback

              Comment

              Working...
              X