Every couple months my Lelya goes unregulated. I have to replace my reg orings then it’s fine for a while. Was just curious if anyone else experienced this with a reg in their Edguns.
Anyone else have Edgun reg issues?
- Thread starter Vetmx
- Start date
I had several issues with the regulator in my Leishy Classic when it was new. I reported the problems to Edgun West, but never received a satisfactory response. I ended up swapping out the factory reg with a Huma. No reg creep, better shot to shot consistency, and a much better shot count.
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Crazy how many 1500$+ guns come with inadequate regulators that end up being humaliated (pun intended)
-Matt
-Matt
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I always replace the two orings on the piston and the gun is fine for a while. I replace them with Buna 70 but I’m beginning to believe they might need to be Buna 90’s. Where is a good @nervoustrig when you need one?
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I don’t have experience with the Edgun regulator specifically but most regulators (e.g. Huma) have only a single O-ring whose failure can cause it to go into bypass mode. A failure of any of the others will simply cause a leak to the outside world.
The suspect O-ring is the one on the adjuster screw. It’s a static O-ring so the most likely cause of an early failure is extrusion, meaning you are on the right track with the thought of stepping up to a 90 durometer.
If you find little wings on the original O-ring, you can be certain you’ve identified the culprit.
The suspect O-ring is the one on the adjuster screw. It’s a static O-ring so the most likely cause of an early failure is extrusion, meaning you are on the right track with the thought of stepping up to a 90 durometer.
If you find little wings on the original O-ring, you can be certain you’ve identified the culprit.
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I haven't noticed any odd behavior with my Lelya (.22). But then, I also don't keep a super accurate account of the pellet speed.
If I notice an odd sound during a shot, then yes, I will look into pellet speed as the first step into its problem solving.
Pretty much the same thing with all of my guns.
Mike
If I notice an odd sound during a shot, then yes, I will look into pellet speed as the first step into its problem solving.
Pretty much the same thing with all of my guns.
Mike
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Hi,
I'm shooting 4 R5M design guns (2x Lelyas, 1 Matador, 1 Long). Purchased in 2019 w/o any trouble so far. OTOH, I only fill to 200 bar with dry breathable air and run at lower power levels.
Enjoy,
Nugria
I'm shooting 4 R5M design guns (2x Lelyas, 1 Matador, 1 Long). Purchased in 2019 w/o any trouble so far. OTOH, I only fill to 200 bar with dry breathable air and run at lower power levels.
Enjoy,
Nugria
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What’s funny is the darn gun will still drill pests shooting unregulated if shooting at normal distances. So yes, it does take a chronograph to snitch out the reg is in there taking a nap. The piston has a 8x1.5 on the big end and a 5x1.5 on the small end where the seat is. I didn’t have a 90 for the 8mm but I did have a 90 for the small end of the spool. Guns back together and it’s its little hot rod self again. I’m headed in no to inspect the orings I pulled off the spool under a magnifying glass. I’m 54 and the peepers aren’t what they used to be.
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Unless it’s a regulator design I haven’t seen before, the O-rings on the spool cannot cause it to go into bypass mode. All those do is keep each the high side and low side from leaking out, establishing an atmospheric reference chamber for the spring to operate within.
Does it have an adjuster screw for altering the setpoint? That’s where you need to look if it’s passing the reservoir pressure to the output side.
Otherwise I’m inclined to say the cause of the velocity change is due to something else.
Does it have an adjuster screw for altering the setpoint? That’s where you need to look if it’s passing the reservoir pressure to the output side.
Otherwise I’m inclined to say the cause of the velocity change is due to something else.
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Only reason I can see a spool/piston o-ring causing a regulator to fail in the fashion of becoming unregulated is if its sticking/stuck. Would be very apparent upon disassembly though that it was stuck.
-Matt
-Matt
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Mines always been messed up but didn’t realize it till watching videos changing in a huma reg. Pic is of reg stack theres not supposed to be a gap the aluminum shell and the black plug. They are supposed to screw together. when I tried unscrewing it wouldn’t budge. Locked it up in my 7x10 lathe and busted it loose. What a mess
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The outer (housing) oring can fail and cause loss of regulation. Regardless, if you are not using the gun for a period of time, it’s a good idea to shoot it down to your chosen reg pressure such that the rings are under equilibrium pressure.
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The symptoms go like this. There’s 210b in the tank and I start shooting. A 10.3 pellet is now only shooting 795fps. And it will stay there very nicely for quite a few magazines. Then when the tank pressure gets to around 160b the speed starts climbing. By 150b the gun is shooting at the speed I originally set it for when the gun was healthy, like 920fps. Replace the spool orings and the gun is spot on 920’s fps. Gun just sat for almost 10 hours since I replaced those orings. Just fired a shot, 919fps. Go figure.
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At least you know the issue and the fix kinda. But why it keeps happening is frustrating. Honestly I might have an old spare reg if you want it. I'll need to confirm if I do have it but I believe I do. Replaced a R5 .30 Long with a Huma for the larger plenum.
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when New I’d start with 300b in the tank shooting 10.3 1st 1000+ 2nd 940+ 3rd 870+ would shoot around 870 till you stopped. Wait 5 mins or 5 days always the same. I had my mutants they took all my attention. So I left the Lelya alone. Only pulled it out to check if holding air and still shot the same. So this year has been try and fix time. What type of o rings is everyone else using? in the regulator?
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I've never had a real problem with my Leshiy 2 regulator (stock). I also have the repr regulator, but I tend to use it only in short spurts when hunting for an ideal regulator pressure for a given jet configuration. So I haven't had troubles with that, either, but I have limited experience with it. That said, if the gun hasn't been shot for a few weeks, the first shot sometimes runs a little hot.
I have not disassembled any of my regulators. Other than adjusting the pressure screw, they are as-purchased.
I have not disassembled any of my regulators. Other than adjusting the pressure screw, they are as-purchased.
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Sounds like we have at least two potential sources of regulator bypass.
Number one:
Be advised extrusion failure isn't always a hard permanent failure. An O-ring can gradually stretch and allow a slow seepage of pressure to get by it. Having depressurized the regulator to work on it, the problematic O-ring may have relaxed and is now sealing properly, and then after a while it thins out again to allow air to bypass it.
I remain skeptical the piston/spool O-rings are at fault. Like Matt said, it would be obvious if they were sticking.
Number one:
Number two:
The pressure screw being the thing I previously referred to as the adjuster.
Be advised extrusion failure isn't always a hard permanent failure. An O-ring can gradually stretch and allow a slow seepage of pressure to get by it. Having depressurized the regulator to work on it, the problematic O-ring may have relaxed and is now sealing properly, and then after a while it thins out again to allow air to bypass it.
I remain skeptical the piston/spool O-rings are at fault. Like Matt said, it would be obvious if they were sticking.
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Nearly ALL high pressure systems that are kept at high PSI levels will trash o-rings. While 90d hardness is more ideal in dealing with this extrusion issue, fitting a 90d in many applications simply can not be done because 90d o-rings have very little stretch and simply break in the attempt.
O-ring hardening is a natural process of material breakdown akin to the type o-rings we most commonly use and best suited to PCP systems.
Wish to prolong use of a PCP and need to reseal & rebuild regulators ? .. charge up to use, discharge to store. Yes impractical, but the above paragraphs / posts is the cost of not doing so
O-ring hardening is a natural process of material breakdown akin to the type o-rings we most commonly use and best suited to PCP systems.
Wish to prolong use of a PCP and need to reseal & rebuild regulators ? .. charge up to use, discharge to store. Yes impractical, but the above paragraphs / posts is the cost of not doing so
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The wider the range of adjustment a regulator has the softer the piston seals against the seat as well, which makes it more prone to orings potentially sticking prior to sealing.
-Matt
-Matt
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I didn’t take any pics of my spool when I had mine apart so I dug up this pic. Like Motorhead mentioned, stretching that 90 over the small end was taxing the oring. The only thing I didn’t like was the oring groove on the big end was cut way too wide. In the hydraulic world, there is plenty of room for a backup oring. I didn’t have a 90 for the big end of the spool. I almost looked for another oring that would fill the groove better. All I know is replacing these two fixes my gun for a while. I screwed up and should have checked the adjuster for an oring and replaced it. Weather is crap, maybe I will do that now.
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