Shorty at 29 FPE….
so i had to go ahead and do some fuxing….. 820s with 18.1’s was just to slow for me. and i don’t want to be buy 10 different pellets for all my guns….
so they all eat 18.1’s …..
so i made a new plenum spacer for the regulated chamber that is a lot thinner walled. and looks like swiss cheese. This in turn should get me a higher velocity at a lower pressure. not sure how much it helped but i think it did.
Then i went ahead and turned the regulator from 145 bar up to 160.
did a little messing around with the HST…. probably could get a little better but this is what I’m getting now …
37 shots between 845 and 855…..
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so enlighten me, how does having the spacer like swiss cheese do 4 the gun?
and what do u mean by, having the spacer like swiss cheese? 🙄
then i will be able too snatch the pebble from your hand. 
So when it comes to regulating the air chamber needs to be a certain size Good rule of thumb is 1cc per FPE.
so if u don’t have that room then what happens is the volume wont be there so to increase the volume they turn up the Pressure.
anyhow cut a long story short the Reg chamber is tiny on these.
the spacer that sizes the regulator chamber has a wall thickness of around IDK may .100
so by going with a stronger alluminum and making it .040 Wall then drilling a bunch of holes through it like swiss cheese. it makes the chamber larger.
which in turn gives more Air pressure on tap ready to flow through the valve.
Is the valve spring tension adjustable and if so does it affect to shot count ?
Thanks ~ Greg
It is not adjustable… Ernest played with it a little bit on his standard when he first got it… but he couldn’t do any better than the manufacture.
I believe he tried shimming…
Eitherway… these don’t require much if anything at all to get popping…
I think the Russian OOZe they put in the regulator is a little excessive but otherwise they are good.
sounds good Jaime.
so enlighten me, how does having the spacer like swiss cheese do 4 the gun?
and what do u mean by, having the spacer like swiss cheese? 🙄
then i will be able too snatch the pebble from your hand.
I haven’t venture into my Shorty yet.
Is the valve spring tension adjustable and if so does it affect to shot count ?
Thanks ~ Greg
Like to do that someday also …..
What was your ending pressure, 160 bar ?
~ Greg
Yes around there…..
I need to do a little more tweaking. but I’m gonna enjoy it for now….
Nice work Jaime !
Like to do that someday also …..
What was your ending pressure, 160 bar ?
~ Greg
Viewing 7 replies - 1 through 7 (of 7 total)
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would a little bit longer hammer spring do the same 4 u?
or would that not be, in good harmony with the gun, & add too much stress on parts?
is one approach better than the other, with the shot string?
or does it matter that much, thats the path u when 4 in this case. 🙄