EdGun R5M/Lelya Regulator & Valve Component Pics

[Feinwerk]

Hello All,
I recently serviced & re-sealed the regulator in my 2019 Edgun R5M and used the opportunity to take and annotate some photos of the parts. Annotations include O-ring sizes, notes for polishing and deburring, part orientation, and regulator screw adjustment. This should also apply to the Leyla, as I believe all these components are the same in both models.

I hope that some of you performing service on these guns will find some value here.

Regards,
Feinwerk

PS: here is a link to an older post that I placed in a different section of the forum, describing my troubles with a creeping regulator and broken valve that has a few more pictures. Further down in this older thread are also photos of the disassembly of the bolt block. I think I will repost them here in the resources section in a new thread.

Edgun R5m Fill Pressure, Regulator Creep & Broken Valve Lessons

Hello all, I thought I'd take a moment to share a story of a surprise failure of my 3yr old Edgun R5m in .25 caliber. I originally tuned this gun to shoot JSB 25.4 gr at 875 fps (54 clicks CCW from full CW, for those of you who have worked on Edguns), where it has performed beautifully until the...

www.airgunnation.com

 

[MAUMAU]

That was a lot of work and I'm sure your fellow EDGUN owners will appreciate your effort.

 

[BigVitamin]

Thank you, great detailed info and photographs!

 

[Ezana4CE]

@Feinwerk Very nice photos, labels, and instructions!! Do you happen to know the correct length of the poppet? I recall reading somewhere on the forums that the poppets come longer than they should be and must be cut down. I'll have to find that link some other time, but wanted to ask while it's on my mind.

 

[kayaker]

Feinwerk, nicely done in great detail, you have great computer skills as I suck, I'm lucky enough to log on lol. I have just one question, is their a difference in using silicone grease verses silicone oil ? I've always heard on here that it can gall the threads on air tubes. TIA Darell

 

[GeneT]

Thanks!
GsT

 

[Feinwerk]

Thanks for the kind words fellas...

@Ezana4CE , I did not measure the overall length of the valve poppet/stem. I bought replacements from Edgun West and used one as is, it matched the old broken one with no trimming. Should fit the Lelya also. The Leshiy classic valve is longer than the R5M/Lelya valve. I don't know if the body is interchangeable or if you could trim the stem of the Leshiy valve to put into the R5M.

@kayaker, the reason for the note about greasing the threads at the bottom of the reservoir is to allow the o-rings of the regulator to slide over the threads and into the reservoir with minimal damage during assembly. It's convenient to use the same grease as for the regulator components and o-rings. It's true that in general silicon grease is not the best for threads, especially threads under load. These pneumatic components in this area are threaded together finger tight and threaded apart under no load conditions when the reservoir is degassed, so there is minimal friction on the threads that could damage them. Sometimes the regulator is a little hard to unscrew to open, even if not torqued when assembled. Dry aluminum threads on dry aluminum threads is not a good combo. I usually wipe a film of silicone grease on them because I'm using it on the other components in the regulator. A touch of anti-seize paste might actually be better on these aluminum threads, but I was a little concerned about the petroleum distillate vehicle in the anti-seize paste. Probably wouldn't be a problem.

BTW, All of these pictures were taken with my ageing Samsung Note 8 phone (recently retired to make way for a new S23 Ultra 512 GB!), and edited on my tablet using an excellent Android app called Photo Editor by Dev.Macgyver. It has good tools for adding text and image overlays on a picture, as well as lots of other good editing tools. It's pretty rare that I go to the computer anymore to fire up Photoshop. I used to make a lot of annotated technical photos like these in my career, now my legacy for the next generation to maintain the machinery.

icon for the Photo Editor app....

Regards,
Feinwerk

 

[kayaker]

Thanks for the info on the silicone grease too the threads I missed that part (finger tight) as I fully understand where you are coming from. If I still had my R5M I would of had paid more attention to detail MY FAULT. Thanks again sorry for the misunderstanding.

 

[Ezana4CE]

@Feinwerk That's what I was hoping to hear. I'm just unsure if I ordered my spare poppet from Brian or Francisco.

 

[nervoustrig]

Outstanding photos and annotations. Your technical accuracy about the various regulator features is excellent and a joy to witness.

 

[Feinwerk]

@nervoustrig thanks, man. Paying it forward to the group. I have learned a lot here from you and others and I wanted to share.

Feinwerk

 

[JungleShooter]

This kind of thread just makes me smile.
Nice. Very nice, Feinwerk.


This is the kind of thread that I hoped to find under the sub-forum named RESOURCES:
Major posts, with substantial information, instructionals, vital or difficult-to-obtain information, original illustrations, research, etc.

Instead, there are many posts that are very "light" (vs. substantial), or clearly belong in other sub-forums, like the posts that ask questions instead of providing resources.

Moderators — would you consider cleaning this up?
I have at least a dozen detailed write-ups, mostly topics that are of interest to a large audience, not just the owners of a certain gun model.
➠ But so far I have felt it to be a waste to post these write-ups in a sub-forum that has been clogged up by non-relevant posts from users who misunderstood the purpose of the sub-forum.


Feinwerk, thank you for your efforts in giving our community an excellent resource!

Matthias

 

[Feinwerk]

Thanks @JungleShooter ,
I had previously posted photos of the breakdown of the R5M bolt block assembly during an overhaul and I don't think I put them in the proper forum. I may repost here in resources which, as you point out, is the correct place.

Feinwerk

 

[woogie_man]

How has the regulator treated you? Have two R5M rifles, .177 and .25, and haven't donne any kind of maintenance on them. Looking at upgrading the .25 to a Huma regulator and try to get some slugs flying out of her.

 

[Ezana4CE]

How and why did this thread get moved to the "General Discussion" forum? Had I not bookmarked it, I would have no clue where to find it.

@Airgun Nation

 

[Feinwerk]

@woogie_man , The factory regulator seemed to hold up just fine and I was perfectly happy with the factory setting of 125 bar. Originally, I used to pump it up by hand between 250 and 300 bar, which stresses the o-rings more. After about 5 years, I started noticing the velocity dropping off which turned out to be leaking o-rings/regulator creep. This problem is what finally led me to disassemble mine, learn about it, by o-rings and make my posts. Nowadays I only charge it to about 230 bar max to take some load off of the o-rings.

I have a 25 cal and I shoot JSP 25.4 grainers at 875 so have not desired to change the regulator setting at all. I shoot it only occasionally for pesting.

@Ezana4CE , hey, you're right! What the heck? I placed this and other technical posts specifically in the resources section. I did not request them to be moved.

Regards
Feinwerk