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Old 01-11-2020, 11:41 PM   #1 (permalink)
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Suggestions for Cram N Jam

I'm looking for a cram n jam for my GZ2000 pistol, and want to know what my best option for an elbow would be. It's a 45 elbow type gun, and I would like the tube to be fairly flush and parallel against the side of it, and have a slight downward angle (see picture). Would a 90 copper pipe fitting be my best bet? How is feeding going from the tube to the 45 neck? Would balls get stuck there?IMG_20200111_223911.jpg
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Old 01-12-2020, 01:32 PM   #2 (permalink)
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Lots of people (used to) go that route since it was cheap and easy. If you've got access to a 3d printer there are many alternatives you can go with that would match the aesthetic of your marker.
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Old 01-12-2020, 02:42 PM   #3 (permalink)
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45/90 degree PVC fitting will work and is super cheap and near indestructible.
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Old 01-12-2020, 04:37 PM   #4 (permalink)
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Originally Posted by Grendel View Post
45/90 degree PVC fitting will work and is super cheap and near indestructible.
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So cheap you can make a few to try slightly different design/angle and still be under $10
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Old 01-14-2020, 09:24 PM   #5 (permalink)
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if you have a lathe or are handy with a dremel, PVC fitting go a long way. i made one for my last spyder from a straight coupling. bored one side to be a snug slip fit over the powerfeed, bored and put o ring grooves in the other side and two o rings to hold the tube. worked beautifully. the same can be done with a dremel with a little more time/patience.
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Old 01-15-2020, 08:58 AM   #6 (permalink)
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I used a copper 90* elbow.

feedneck 3.JPG

feedneck 2.JPG

feedneck 1.JPG
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Old 01-16-2020, 10:20 PM   #7 (permalink)
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That looks like what I'd want, but just a bit closer to the body. Would the non coupler end fit in the feedneck?
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Old 01-20-2020, 02:38 PM   #8 (permalink)
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No it's smaller.

The only way I could get it lower would to cut down both my powerfeed and the elbow.
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Old 02-02-2020, 02:33 AM   #9 (permalink)
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So in order to get better feeding, I cut a chunk out of the front of the elbow, but it was a bit too much, and it allows paint to fall out. I've remedied this problem with some tape, but any suggestions for a more permanent solution?
Also, if I insert the tubes any further then what is shown here, it will not feed. Any suggestions for a stop on the tube?IMG_20200202_003945.jpgIMG_20200202_004008.jpg
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