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Originally Posted by e-luder
What's inside your gun????? O_0
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well...it started off small...then things just kept appearing in my shopping cart and...umm...I bought them...it seems to have ended up as on par (cost & parts wise) with one of your full builds. at this point it might actually be more expensive than my primary rifle.
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Weak blowback usually means that the piston head can't seal properly.
Piston heads are almost the culprit to weak strokes most of the time....
Your light strikes...
It could be that the firing pin can not engage the valve properly.
Or if you were in my shoes just now as I try and fix this guy's gun, the valve is actually faulty. Usually, needs a bit of lube to the valve to make sure it can fluently move.
But my guess is that the actual hammer spring is not strong enough to open the valve. I suggest you switch the hammer spring to a Shooter's Design one. They're pretty good and is probably my number choice as far as hammer spring goes.
This will cause you to have weak blowback as well considering there won't be enough air to push the push backwards.
If you want a really strong felt recoil, revert your recoil spring back to stock. THis will give the slide less resistance during the rear stroke and a higher recoil velocity....
weak recoil spring + heavy slide = stronger felt recoil
I dunno. I'm just maing guesses. I don't have your gun in front of me to fool around with. Sorry mate. I hope this offers some sort help for you...
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the stock recoil spring was the first thing I tried. it actually cycles the slide well (which makes me feel a turd for buying an upgraded one).
I think you might have actually been onto something with the valves. the mags are brand spanking new and working them a bit they've gone from half a mag of short cycling to just the first two or three shots. they still seem a bit sticky so I'll keep working them when I get some time.
tried a bunch of different piston heads and (given that they were all discarded to begin with) the one I was using seems to be the best. its the Airsoft Surgeon one that comes with the nozzle (and looks suspiciously like a PDI head). discovered that the nozzle doesn't quite move smoothly in the BBU so I lubed it a little and it the kick seems to be a tiny bit better. it's still nowhere even close to my other pistols though, which worries me. (unless it's supposed to be like that and I'm just totally unfamiliar with the platform...which is a distinct possibility)
I really hope its not the hammer spring because a: I used an "upgrade" one and b: F*CK THAT HAMMER ASSEMBLY. my thumbs still hurt =( I really don't want to take it apart if I don't have to. all the bits in the hammer might still need time to break in a bit more, it's still quite rough.
if it doesn't get any better I'll try a different hammer spring...if I have to..I guess. >_>