Blowback on old style EDGun Lelya

[Centercut]

I recently bought a used .20 EDGun Lelya old version and have some blowback when I shoot. I’ve tried the screw at the rear as shown in the Ernest videos but in no screw position does it stop the slide from coming back a half centimeter and air blowing out the breech on a shot. Anyone have any ideas about this? Appreciate any advice. Thanks. 

Mike

 

[Endeavor]

This may help http://talonairgun.com/forum/search.php?st=0&sk=t&sd=d&sr=posts&keywords=lelya+blowback&fid%5B%5D=34

 

[AirRanger]

Same thing happened to me, I had a blowback when I first received it and adjusted the screw in the rear and no more blowback for months. A few months go by and same thing so I thought maybe the screw has backed off or something so a little loctite and some adjustment to the screw but I kept getting blowback. I ended up removing the sliding breech and pellet probe and found that the first o-ring closest to the tip of the pellet probe was cut, I replaced the o-ring and all was cool until my new o-ring was cut to. That’s when I did some research and found over on TalonTunes forum a guy posted about how he had the same issue and the culprit was a razor sharp breech entry, right where the pellet probe goes into the breech to seat the pellet, I followed his instructions and took a dremel and polished that sharp breech entry to a 45dg• angle and voila problem solved. The old Lelya has a few minor bugs but they can be resolved with a little TLC. I know it may take a little warming up too but if you can exercise patience and get comfortable with that little micro pup, she will deliver, mine is extremely accurate for its size. I replaced my factory reg with a Huma btw and am running it at 120bar for 32 shots at 770fps.

 

[Centercut]

@airranger, thanks. What caliber is yours? Mine shoots the 13.7 grain .20 caliber JSBs at 835 FPS. And yes, surprisingly accurate. 

Mike 

 

[AirRanger]

Mine is also a .20cal and when I received it, it was shooting 13.73g JSB at 830ish also. The factory reg was set at 130bar and the Huma I put in was mislabeled and through my own testing I was able to figure out my correct reg setting and I relabeled it and set it to 120bar.

 

[Centercut]

Figured out after trying to do the adjustment shown in Ernest’s video that the problem was both probe orings were missing. You can’t see where the orings fit on the probe until you disassemble that part of the gun. Not sure if they were missing when I bought the gun or blew out when shooting. The orings are very small 1x3mm. Shoots great now with no blowback after I installed the two orings. 

 

[Centercut]

Installed a Huma in the .20 EDgun Lelya 1 yesterday. The stock reg that I removed was labelled "130 bar". Prior to changing out the reg, the gun was adjusted to approx. 790 FPS with the 13.73 grain JSB. I set the Huma to 120 bar, and assembled the gun. Without changing anything else. the gun shoots at exactly the same speed as before. I attribute the increased efficiency to the addition of the small plenum that comes with the Huma. Haven't run any shot strings but will do that soon.

 

[AirRanger]

Nice, can’t wait for those new heavy JSB’s!!!