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Reviving a parted out SL74

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    Reviving a parted out SL74

    I purchased a parted out SL74 a few months ago in hopes of bringing it back to life. The hardest part was tracking down a solenoid for it and I didn't want to buy a used gun just to part it out.
    Instead, I designed a manifold for it to use a LV1.6/LV2 solenoid and gasket. The only tweaks I made to the solenoid was sanding down the screw retainer slots and screw heads for it to fit the frame, as I didn't want to modify the frame in any way. Also, I designed a voltage regulator circuit to drop the output voltage of the ego board from 5V to 3.3V and added JST connectors to make it plug and play.

    I don't have shooting videos of it yet, but I've had it ramping at 15bps with no issues. Currently, it's set to 10.2bps for local play.

    I've added a black SL3 reg, feedneck, and pops asa. I couldn't track down any reasonably priced QEV's, so instead I added some banjo barb fittings from McMaster-Carr. Next, it'll be off the anno.

    Let me know what you guys think of it. I have two manifolds and a few voltage regulator boards left, but I can get some more made if there are any interest.

    #2
    Good work!

    Comment


      #3
      I didn’t realize the new LV solenoid used a 3v pilot.. good to know

      Comment


        #4
        Would you consider selling the voltage regulator and manifold as a kit? There are lots of older egos currently relegated to paperweights because of solenoid issues. I would buy a kit for sure.
        My Feedback
        RIP Riot 2012-2020

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          #5
          Oh wow. This is really great work.
          The SL74's are so fun. Really love that era ego.

          I think I may have seen that up on ebay? Too bad the seller took the ASA.

          I would love to get one of your custom manifolds and regulator boards. PM sent <3

          Comment


            #6
            Originally posted by Moodog View Post
            Would you consider selling the voltage regulator and manifold as a kit? There are lots of older egos currently relegated to paperweights because of solenoid issues. I would buy a kit for sure.
            Yeah for sure. I need to get barbs for them first.

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              #7
              I am pretty sure my old ego 7 still works, but I'd also buy a manifold just to have back ups.
              https://www.mcarterbrown.com/forum/b...khaus-feedback

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                #8
                Also that manifold will work for the etek solenoids which will save you about $100 or even more because you can find them used

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                • Nugepb
                  Nugepb commented
                  Editing a comment
                  Probably not. Screw hole locations are different between the two.

                #9
                I have one manifold and board left on hand, ready to be shipped out. PM me if you're interested.

                Comment


                  #10
                  So, the new solenoid, does it have metered flow valves on it? I'm just wondering if you ant make the ego 7 smoother with this change.
                  https://www.mcarterbrown.com/forum/b...khaus-feedback

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                  • Nugepb
                    Nugepb commented
                    Editing a comment
                    It does have the valves on it but I feel like it acts more like a QEV.
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