JOAO's American Arms Gas Ram Conversion Has Been Tested in a 125 Sniper !

[z28rod]

"When you consider you can loose 50 fps when using a new un adjusted j m piston seal,
 The 30 fps above the snipers average in all probability should have no effect at all."
X 2

[Charles Outdoors]

  If you look at the cutaway of the quattro trigger you can see how it works. It was designed so the sear could not release unless the trigger is pulled as long as you don't add longer screws and prevent it from fully locking up. Once properly locked up the sear cannot be jarred loose because the lever configuration blocks the sear from coming down until the trigger is pulled rearward.  This is an improvement over the older design that could release if jarred just right from what I remember reading. Sloppy tolerances could cause it not to be as safe as designed though.

 Lever #1 in the diagram holds the piston when cocked. From what I am seeing you would have to shear the catch off the top of lever 1 or break the steel pin holding lever one in place to release the piston without pulling the trigger.

 This is all housed in a hefty steel frame. No Sure bet, but it's a beefy design and IMHO the odds are in favor of it holding up fine. Also the yellow gas ram has been installed in at least one, maybe 2 WFH's already if I remember right. 

[z28rod]

"I am not getting ahead of anything,"
Keep on rockin Mike. There are allot of members watching your progress, should be very cool. 950-980 fps excellent.

[Bryan Heimann]

Like I said dude, good luck.  Members have already installed 180 bar rams, with pretty fan freakin' tastic results.  I wouldn't take it any further

[Paul68]

"Bad mojo for having a open forum discussion on the topic at hand ?, "

No Mike, bad mojo as in having a barrel slam shut or a random trigger as has already happened with at least one Hatsan "mod", or someones fingers getting lopped off or a skull cracked, or someone getting shot.

Others have already installed the heavy gas spring yeah, and removed it as well because if I remember correctly it made them umcomfortable.

As has been said, have at it. Keep in mind though the difference between personal responsibility and being responsible for others.

Good luck.

 

[Tarheel]

Guys,

Emotions are running a little high . . .

We all have a passion for airguns, of one type or another . . . Some of us are satisfied with "stock" rifles, while others are looking to increase the power levels of their rifles. There are also folks who "detune" their rifles, reducing power to pursue accuracy over power.

Many people like to work on and "tinker" with rifles . . . That is probably where many of the great innovations in airguns have come from, over the years, in my opinion.

As long as we practice our hobby safely, and work together to help each other out, hobby air-gunning should continue to expand and improve.

I think that taking the steps to mechanically evaluate the Quattro trigger are a very good thing. I believe it would be worth having triggers made by other manufacturers similarly tested (RWS, GAMO, "Chinese",etc ).

Even if we are not talking about gas ram conversions, swapping springs is a common practice in "springers". The same situation, by installing a different or custom spring, could be encountered in any air rifle.

I am looking forward to seeing what the evaluation of the Quattro trigger says. Based on the empirical data, it will either sound a warning or ease concerns over possible mechanical failure. Either way, the outcome is a good thing.

Dave

[fortyshooter]

Had it not been for Elmer Keith's wild power loading expierments with the .38 and .44 Special,the.357 and .44 Magnums may not have evolved.
Had the "net" been around back then I sure he would have been telling all what he was doing too.
Just because someone goes beyond,does not mean it's an OK for everyone to try....just use your own personal judgement as to how far you feel safe to go.
Before I got into air rifles,again, I was machining up wooden bullets powered by primer caps,to shoot at my garage target box,using my different caliber handguns. Worked really well from 20 ft. Would penetrate 1/2 gal. water filled milk jugs easily. However,due to local laws,I could not do this in the backyard...hence the airgun hobby.

[ezman604]

Well, once again an otherwise informative thread has become polluted and will be locked down. We here at "jerk water USA" support our own. Those that have PROVEN themselves, not those that come in here with trumpets blaring proclaiming they are the "NEW" guard and we owe it to them to support them. We as a group/community/family WILL support you once you prove yourself. But DO NOT come to GTA with an attitude that turns almost every post into a verbal battle. I'm tired of seeing it and it just is NOT in the spirit of this great forum. We are here to ENJOY the sport and we should not come here only after strapping on our boxing gloves and being prepared to bob & weave through the threads. It ends here and now.
I will not stand by and have anyone make a statement that GTA cares nothing about honesty and integrity and that we are here only to promote the few to make money. That is a slap in the face of all that has been built here by the fantastic members. We promote our own, but only AFTER they have proven themselves with many years of service to the sport. If you want to call that favortism, so be it. We call it protecting our members and recommending those that have EARNED it.
Those that have been around GTA for any time will know that I do not make it a habit of posting this type of message. I prefer posting more informative and enjoyable messages. But when we are attacked in public forum, you will hear from me.
Now let's get back to airgunning and enjoying the sport.
Happy Shooting!!!!
Dave
 

[ezman604]

And one FINAL thought. Evaluating a trigger group? Checking it's limits or limitations? Folks, airgun manufacturers HAVE engineers and designers. A company cannot just throw an item together and toss it out on the market without testing and evaluating. NO company can afford the lawsuits that could stem from an improperly built or unsafe product. These companies have engineers and designers for a reason. If you feel they are not doing ALL they can do, then contact the manufacture or better yet, apply for a job in their engineering department. I believe what they produce and make available to us consumers are products that are designed and built in the safest configuration available. Otherwise the product will be recalled. Yes, modifying is possible. Improvements CAN be made. But tuning is not all about power. It's about making an airgun perform smoother, more consistant and accurate. When you start pushing the limits or looking for the limits of a product outside of a controlled envoirnment, you are playing in unsafe territory.
Hmmm....might that be WHY you aren't hearing all of the PROFESSIONAL tuners step forward? Because they know and understand these points. Too bad everyone doesn't.   

[CharlieDaTuna]

Thank you Dave and all well said from me, the staff and the members on the forum.

It is because of Dave and the rest of our strong administrative staff that our forum is what it is today. It can be a tough call at times and might even upset some but there are times that we do what we need to do to maintain what the GTA represents to our membership and the airgun community.

Our team have both Genes and my support.

Thank you again Dave  (ezman604.. aka: Dez)

CDT