Edgun R5M Magazine O-Ring Isssue

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jcote258

jcote258

Member
Dec 27, 2019
114
1
NH, United States
I am having an issue with the three magazines that I have. I'm using normal 25 Cal JSB Kings, and when I go to load the magazine, anywhere from three to five of the pellets are crushing the o-ring against the front of the pellet and the wall of the magazine as I push them in and the pellets are getting stuck. To give you a better idea of the issue, instead of the pellet riding over and moving past the two o-rings, the pellet is moving past the first o-ring and crushing the second o-ring against the wall of the magazine in front of the pellet. This "obstruction" of sorts, stops the pellet from advancing and I've had to use accessive force with a screwdriver in the reverse direction to get the pellet out. I have tried to troubleshoot the issue by using Teflon lubricant on the o-ring, and that helps the pellet get past the initial o-ring very quickly now, though many still get stuck on the second o-ring and have the same pinching effect. I have tried to remove one of the o-rings but using a single o-ring show to have the same issue. This issue is happening with all three magazines, and the problem will occur with random pellets within the loading phase. Not sure if these magazines are defective or the o-ring channel is cut too deep and the pellet is squeezing the o-ring against the edge of the magazine instead of riding over it. Has anyone else experienced this issue? Maybe a different type of o-ring could be used?

You can see in this picture that I was able to get three to seat properly and move past the two o-rings, the six that are not seated as far are stuck on the last o-ring as it pinches it against the wall:

1581726051_13716746665e473963daee87.56484574_IMG_20200214_191601.jpg


If this picture, you can see that the pellet is visible through the double o-ring as it is pinched and not visible on the pellet that has been seated properly, the two red circles on the left highlight the pellets that have been seated properly, the two circles on the right show the pinched o-rings:

1581726920_200701295e473cc81591b6.51796326_IMG_20200214_191658.jpg


In this final picture, you can see that the o-ring is stopping the pellet from advancing any further into the magazine. These were not simply pressed in, I am using a hex wrench to seat the pellets and once I experience resistance I stopped. This just so happened to be six in a row but often it's random when it pinches the o-ring against the wall of the magazine:

1581726809_16234621625e473c591a8cb4.56042528_IMG_20200214_191739.jpg

 
HI I own many Ed-guns , I know usually when the mag does not cycle your pellet is not set deep enough in your magazine , this will cause it to not cyle or to bend skirts on pellets ,

Load your 3 mags and give them a few taps on a table or something hard , they will move down so no skirt is near the breech side ,



OK now I do this with all my magazines , weather ED-gun or taipan or any other , I remove o rings and I drop ammo I use threw magazine ,all pellets or slugs Must fall threw on their own weight , This is tuning your mag for your ammo , it will increase accuracy as a tight mag can distort pellet skirt or even shave it ,then I reinstall orings ,

You can use very fine sand paper ,with a drill , I would use a dremmel , or hand file , I would not use a drill bit on a edgun plastic mag as you dont want to ruin anything , take time and in end you have got perfect mags for your ammo and confidence with it cycling and hitting your mark ,

Let me know if how it makes out or if you dont understand

LOU
 
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HI I own many Ed-guns , I know usually when the mag does not cycle your pellet is not set deep enough in your magazine , this will cause it to not cyle or to bend skirts on pellets ,

Load your 3 mags and give them a few taps on a table or something hard , they will move down so no skirt is near the breech side ,



OK now I do this with all my magazines , weather ED-gun or taipan or any other , I remove o rings and I drop ammo I use threw magazine ,all pellets or slugs Must fall threw on their own weight , This is tuning your mag for your ammo , it will increase accuracy as a tight mag can distort pellet skirt or even shave it ,then I reinstall orings ,

You can use very fine sand paper ,with a drill , I would use a dremmel , or hand file , I would not use a drill bit on a edgun plastic mag as you dont want to ruin anything , take time and in end you have got perfect mags for your ammo and confidence with it cycling and hitting your mark ,

Let me know if how it makes out or if you dont understand

LOU
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Hi Lou,

Thanks for the quick response. I did remove the o-rings from the magazines and the pellets fall through without effort on all the holes. The magazines have zero issues with cycling as the skirts are flush to the edge, even when they are pinching the o-ring. The main issue I am having is when I try to seat the pellets past the o-rings, some are catching the last o-ring and pinching them against the cylinder wall. Almost like there is too much o-ring showing and instead of riding over the second o-ring it pinches the rubber preventing the pellet from advancing.
 
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Try going with a thicker o-ring. A thicker one will be less likely to get trapped between the head of the pellet and the magazine wall.
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Agreed, I would like to try that as well. Is there a recommendation for what size I should get? I was going to order 12 of the 1.5mm x 22 standard magazine o-ring just to replace them but seeing how there are two o-rings, I am wondering if I can just order (1) 3mm x 22mm to take up the space of the two rings.
 
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you can swap out orings maybe the size is a bit thick and too tight ? did you ever swap it with wrong size ? If your pellets fall thew with no oring install 1 or 2 orings and it should have little drag popping threw with an allen wrench , sounds like they too tight take one off see if it pushes threw better , if not just use 22x1.5 . I run some edgun mags with 1 oring with slugs , with pellets I use the 2 sd sizes for pellets . ps make sure they are 70 hardness

LOU
 
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I personally use 1 thicker O- ring on all my edgun mags, INCLUDING on the eagle vision mags with ZERO issues.....Bought them at HOME DEPOT. Get yourself these....they fit PERFECT and you only need 1 in each mag.



1581775956_18520929025e47fc54528526.42645770_IMG_2325.jpeg
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Awesome, thanks for this info and including the pic! I'll stop by and pick a few up and see if it solves the issue, thanks again!
 
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I've had one of those kits for about 20 years. Price was a little more then but I can't count the number of times I was repairing something in the house or on the car that having one of these kits saved a trip to town. I don't know for sure but that 1 O-ring from Home Depot probably cost one quarter as much as the entire kit.

There are many different grades of O-rings and they are made out of different compounds which is determined by the fluids they are working against. All that's academic for what we do. For a leaky garden hose, a fill probe, or magzine, etc., those in the kit weould be just fine. I probably wouldn't get them and use them for an O-ring replacement for the innards of a PCP.

I used to go to a place called O-ring supply and carry the old one in with me. They'd measure it and then ask how many I wanted. Can't remember any I needed that cost more than 25 cents. They would usually throw an extra in as they are so inexpensive when they are bought by the hundreds.
 
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A multiple edgun owner here as well I use viton durometer 70 1.5.x22 they are slicker than buna...always tap edgun mags on the face and seat pellet foward...orings lose elasticity over time and you will see nothing at all wrong! Also good idea to buy from a large volume seal shop or jobber...I have seen a ton of haxzard frought orings that were not vulcanized properly and fail right off the hobb...rub with molykote 55 when you install. Just enough to feel not see,,,also store your spares in a cool dry place AWAY FROM anything that arcs a lot ozone kills rubber...throw em out after 5-8 years max if stored correctly...3-4 is all they last in the wild. We date and rotate stock on critical equipment...
 
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Thanks for all the feedback, everyone. I ended up removing the stock o-rings and used a Dremel tool with a grinding bit to further polish the inside the cylinder. Made sure the pellets fell through each cylinder with ease and replaced with the #17 o-ring from Home Depot, and I'm able to seat the pellets without an issue. I did have an issue with one pellet that still pinched the o-ring against the wall, so I tried with a different pellet, and it seated fine, not sure why that was, but I'm going to chalk it up to an anomaly.
 
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