Tuning Post your Leshiy 2 tunes

[Hobbyman2007]

350mm .25 

130 bar regulator 

.5 and .6 jets 

.25.4 kings at 840 FPS 

33.9 MKII jsb at 770 FPS

38 gn BBT HP cast at 722 FPS

getting around 56 shots before refill with a 350cc bottle with all projectiles. 

 

[bigHUN]

350mm .22

120 bar - original Edgun Reg (non EAR)

0.3 and 0.5 jets (stock from MFG)

16 grain AA Field 980 fps

I have not counted the number of max shots yet but I can feel a large waste of air. This will need some work.

currently Reg re-set to 104 bar but I did not had a comfortable time to test these speeds yet, planning to get down to about 860.

 

[brawler1588]

350mm .25 

130 bar regulator 

.5 and .6 jets 

.25.4 kings at 840 FPS 

33.9 MKII jsb at 770 FPS

38 gn BBT HP cast at 740 FPS

getting around 56 shots before refill with a 350cc bottle with all projectiles.

Is this a non repr setup?

 

[Hobbyman2007]

Yes this is a non REPR. And factory set regulator from a 250 bar fill. 

 

[brawler1588]

Yes this is a non REPR. And factory set regulator from a 250 bar fill.

Juse curious because I just got my repr version reg came super high at 195 glad I checked it dropped it and settled around 123b, I am getting 870-875 with the 25.39gr jsb pellets.

 

[madeintheuk]

350mm .22

120 bar - original Edgun Reg (non EAR)

0.3 and 0.5 jets (stock from MFG)

16 grain AA Field 980 fps

I have not counted the number of max shots yet but I can feel a large waste of air. This will need some work.

currently Reg re-set to 104 bar but I did not had a comfortable time to test these speeds yet, planning to get down to about 860.

350mm .22

120 bar - original Edgun Reg (non EAR)

0.3 and 0.5 jets (stock from MFG)

16 grain AA Field 980 fps

I have not counted the number of max shots yet but I can feel a large waste of air. This will need some work.

currently Reg re-set to 104 bar but I did not had a comfortable time to test these speeds yet, planning to get down to about 860.

my REPR reg setup is at 135bar getting 860fps with hades. Same caliber and barrel as yours. How are you getting so much higher speeds at much lower reg pressures?

 

[bigHUN]

my REPR reg setup is at 135bar getting 860fps with hades. Same caliber and barrel as yours. How are you getting so much higher speeds at much lower reg pressures?

I have no idea, everything was stock from Edgun. maybe something to do with jets, 0.3+0.5 what I measured with needles. I am also noticing a large air blows from mag side, assume these from the two transfer ports (in between the puck to mag and in between mag to chamber).

This is still a learning curve for me:

- the Reg is feeding a total amount of air to the plenum, and

- the jets separating what/how much amount of air will go for the indexing mechanisam and

- the rest of remaining air goes to propel the projectile.

Some logic is telling me the indexing mechanisam have a priority all the way until you make a balance with the jets. I have no spare jets, I was planning to re-drill.

This is my best understanding, you let me know if I am wrong.

 

[madeintheuk]

my REPR reg setup is at 135bar getting 860fps with hades. Same caliber and barrel as yours. How are you getting so much higher speeds at much lower reg pressures?

I have no idea, everything was stock from Edgun. maybe something to do with jets, 0.3+0.5 what I measured with needles. I am also noticing a large air blows from mag side, assume these from the two transfer ports (in between the puck to mag and in between mag to chamber).

This is still a learning curve for me:

- the Reg is feeding a total amount of air to the plenum, and

- the jets separating what/how much amount of air will go for the indexing mechanisam and

- the rest of remaining air goes to propel the projectile.

Some logic is telling me the indexing mechanisam have a priority all the way until you make a balance with the jets. I have no spare jets, I was planning to re-drill.

This is my best understanding, you let me know if I am wrong.

I can’t pretend to know how this system works. It’s all completely new to me. I feel that just reg pressure alone won’t give you the efficiency or “balance” you’re looking for even if that’s what the EDgun boys tell you. I feel it’s similar to a hammer and regulator setup, where you have to find a sweet spot between reg pressure and valve dwell. The jets are the only way to change dwell, so I’m sure that’s where I need to concentrate my effort. BUT with the cycling mechanism needing air also, if I were to modify too much, would it effect the cycling of the mag? Ive hear of some higher power guys blocking off a jet, and using 1 .2mm jet to get the power for the bigger calibers. Should this apply to a higher power tune on a .22? I mean, in the end all I’m looking for is 900-915 with 15.89 hades, but after fiddling with my reg, it seems I’d need reg pressures in the 165-175b area to achieve this. Seems a little excessive for such a light projectile. Especially with numbers like yours at such low pressures guys shooting .25 with heavier stuff at lower reg pressured. I’m confused. 

 

[bigHUN]

350mm .22

104 bar – original Edgun Reg (non EAR)

0.3 and 0.5 jets (stock from MFG)

16 grain AA Field 920 fps

Jump from 120 bar to 104 I am noticing a wider st spread of 5.8 fps. more to come.

 

[bigHUN]

350mm .22

104 bar – original Edgun Reg (non EAR)

0.7 and 0.5 jets (drilled one 0.3 jet to 0.7)

16 grain AA Field 902-895 fps max/min

started somewhere about 280 bar on bottle (300 ml 300 bar CF) and the speed was consistent even when dropped below the Reg @104, ended up somewhere about 60-70 bars according to Edgun gauge.

8 mags + one empty shot at the end of each mag = 72 shots before the fps started dropping on 9th mag.

So this is what I actually wanted to know....dropped below the 104 Reg at about 7th mag and still it was a consistent speed up to guessing down to 80ish bars. Analog Edgun gauge I cannot exactly estimate the numbers.

 

[madeintheuk]

350mm .22

104 bar – original Edgun Reg (non EAR)

0.7 and 0.5 jets (drilled one 0.3 jet to 0.7)

16 grain AA Field 902-895 fps max/min

started somewhere about 280 bar on bottle (300 ml 300 bar CF) and the speed was consistent even when dropped below the Reg @104, ended up somewhere about 60-70 bars according to Edgun gauge.

8 mags + one empty shot at the end of each mag = 72 shots before the fps started dropping on 9th mag.

So this is what I actually wanted to know....dropped below the 104 Reg at about 7th mag and still it was a consistent speed up to guessing down to 80ish bars. Analog Edgun gauge I cannot exactly estimate the numbers.

That’s stellar numbers! I think you’ve found the sweet spot for efficiency and power for your setup. 
im not sure what jets I have, but at 130bar reg (repr reg) it’s pushing 15.89 hades only to 850fps and with the stock tube I’m getting 5 full mags. Not bad, but I would really like to get my reg pressure down. I like the speed, makes the hades wicked accurate, but I would like less reg pressure which equates to more shots. Am I stuck replacing jets at this point? Or am I missing something?

 

[bigHUN]

I don't think we can program the dwell timing in a conventional way like with other airguns.

(FX Impact comes to my mind first), with the hammer spring and valve adjustments we can fin tune the timing balance.

I got the impression that the jets flow rate actually drives the valve open/close timing needed for a projectile, I have no spare jet kit (yet) to confirm my theory.

 

[madeintheuk]

I don't think we can program the dwell timing in a conventional way like with other airguns.

(FX Impact comes to my mind first), with the hammer spring and valve adjustments we can fin tune the timing balance.

I got the impression that the jets flow rate actually drives the valve open/close timing needed for a projectile, I have no spare jet kit (yet) to confirm my theory.

I was under the impression jet changes was the only way to change dwell time. I just don’t know the correlation. Between jet sizes, dwell time, and caliber/barrel length. I’m surprised there isnt someone who has already experimented with this. Seems like for proper tuning, just like any other pcp, a mixture of reg pressure and valve I needed with the exception of hammer spring adjustment.

 

[Hobbyman2007]

I’m pretty sure , bullet or pellet weight has to be taken into consideration as well for tuning these rifles. Back pressure certainly plays a part. Between the price of pellets and the disassembly time for each jet size change . I’m going to wait until mine fails , if it ever does. I should be getting a 600mm barrel this week . This will add some more data points with my set up . 

 

[madeintheuk]

I heard back from Brian at Edgunwest after asking him about my setup and reg pressure compared to similar .25 numbers with lower reg pressure. He said the .22 has a dogbone and collar (don’t know what those are), and I supposedly have 2x 1.2mm jets, and the .25 has 2x .4mm jets. 
Does anyone know anything about this dogbone and collar? and if it’s removable on the .22

 

[bigHUN]

I have no jets kit in my hands and I cannot get any in a near future from my local dealer. I drilled one jet and I can enlarge a hole again but these changes are irreversible (no undo) so I am a bit hesitant to play in that erea until I get more parts to play with.

 

[madeintheuk]

After more research, the “new plug” came with these new dogbone and collar parts in the “low power” .177,.20, and .22 guns for improved operation. Not sure how they work, but apparently they greatly reduce the spread between shots. They also lower power. They are removable, but will cause larger spreads between shots. I’m going to experiment by removing these parts to test higher velocities with heavier projectiles. This is probably what’s causing my reg pressures to be so high at the low velocity, but also why my accuracy is phenomenal, and my standard deviation is below 3. 

parts 32, and 33 and those that I’m referring to. The older plug did not have these parts. 

 

[bigHUN]

Just a side note, you have that REPR or whatever is called these days I can see the words have some variations and repeating all depends who is using it

I am just unlucky we got the L2 w/o that thingy and I wanted to buy the adjustability for extra big bucks, so you saying now doesn't work that way? Me better spend those $$$ then somewhere else

 

[madeintheuk]

Just a side note, you have that REPR or whatever is called these days I can see the words have some variations and repeating all depends who is using it

I am just unlucky we got the L2 w/o that thingy and I wanted to buy the adjustability for extra big bucks, so you saying now doesn't work that way? Me better spend those $$$ then somewhere else

Oh it definitely does. It’s the updated parts in the valve I believe are causing my woes. When I first got it, it was shooting 830fps with hades with the reg at 115bar. I wanted to get it into the sweet spot for these hades so raised the reg till I got it to 860fps. That equates to 135bar. That seemed high to me for a low setting when guys with .25 and up are getting similar speeds with lower reg pressures. That’s when I stumbled (thanks to Brian) on the info about these added parts to the valve assembly. All of which I could remove, and get the speeds I’m looking for much easier, but from what he says, it will increase my spread, and with it shooting so darn accurate now, I don’t want to lose that. If I do however decide to go to slug testing, I will remove these to get the higher speeds I want without having ridiculously high reg pressure. 

 

[Hobbyman2007]

Just finished up with fitting an original FX smooth twist barrel. I cut it down from 600mm to 500mm as I really didn’t want the rifle to look like a Kentucky long rifle. After two full mags here’s what I got . Regulator same at 130 bar , JSB MKII king heavies shooting at 890fps. This is a serious gain in power from just adding the barrel with no other changes. From 43 fpe to just a hair over 60 fpe. Now let’s just hope it’s as accurate as the Alpha Precision . 


again no changes to the gun other than the longer barrel.