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Old November 6th, 2012, 20:01   #1601
e-luder
 
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Join Date: Aug 2011
Location: Centre Mass
Quote:
In addition to my previous explanation on how the gas cycle of modern GBB's work:

Once the floating valve is closed and the slide begins moving, the valve knocker will keep the magazine's release valve open for as long as it takes for the slide to blow back to a certain point. This trigger point is indicated via the ramps on the blowback unit in the 1911/Hi-Capa, Glock series, Sig series, and more. Thus, there is no such thing as splitting the volume of gas between one function to another, because the volume of gas expelled is not fixed. The amount of gas expelled is dependent on a number of variables, all of which, determine how fast the slide will blow back. The faster the slide blows back, the faster valve knocker disconnector is triggered.

And likewise, the slower the slide blows back, the more gas is expelled in to the chamber (nozzle).

There are existing experiments with stronger floating valve springs... I even have some in some of my guns, but in my experience, more often than not, they just don't work that well. It creates too much resistance for the negative pressure system to overcome, and it results in excess gas being shot out the muzzle, and very weak blowback.

... reading over your reply again, I think you actually just described what I described, but in a different view. It makes sense.

There are high flow floating valves available for the 1911/Hi-Capa series, which, as you've described, is just a reduction of columns in the body of the valve to increase the volume of flow. I have a few on hand, if you wanted to give them a try, but in my opinion, there are better things to spend money on first if you are looking to increase power.

Anyways, Guarder nozzles... suck. I've cracked a few in the 1911/Hi-Capa series. I only have one remaining one which has held up strong (surprisingly). My personal preference for nozzles are the Shooters Design POM, or the Airsoft Surgeon product.
It's not so much power I was after but more for durability' sake. As I specified before, the Glock that I tested on was already firing unreasonably too hot for my taste (topped out at 387fps).

The only way I found to keep the valve open is to use the actual stream of air coming from the blowoff valve itself to resist the negative pressure. It meant that I had to reposition the valve blocker in order to get a few decimeters of spacing for the floating valve to "float" on top of the intake hole on the loading muzzle. The result is as you've pointed out, weak "blowback" or no blowback at all since the valve will remain open..........and gas dumps on the first trigger pull since the disconnector wasn't tripped.

But you're right, the time could have been invested in looking at alternate solutions. I could've just switched the piston head back to the way it was but it would mean that I would have had to find another way of consuming gas effectively. I was barely making it to a full stack on a single fill when I got the gun. lol. I modified things and now It clears nearly 2 (24+1) stacks on a single fill.

The thing with the Airsoft Surgeon muzzle sets (I'm talking about the power up kit w/ the springs included) is that they seemed to fit very tightly with the BBH and the piston head. I had one installed on a 4.3 and the muzzle and piston head it came with had a lot of friction and prevented it from moving smoothly. Plus, the recoil spring shredded my two piece outerbarrel (it stripped the chamber threads). But that was on a 4.3. I think that recoil spring is made to tailor the 5.1 (as you've specified in previous posts, months back)

The Shooter's Design ones were ok. But again the piston heads I''ve paired it with didn't seal properly. At least, not on the Glock platform.
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Last edited by e-luder; November 6th, 2012 at 20:16..
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