Simple "how to" on rebuilding your NP gun from Crosman

[CharlieDaTuna]

Hey Bob P.  I did see your article regarding your compressor but I didn't say anything at the time and I never saw anything after that.

 However, it was not a new idea and there was a guy about eight or nine years ago that had come up with the same idea and was thinking about selling them.  Talked about how safe it was and could not fail. I thought at the time it was dangerous and that it was surely an accident waiting to happen. Sure enough, he was using it to install a new spring in a gun and it let go and ripped a big chuck out of his bicep muscle I believe it was.  There may be some of the old timers around that remember it. Anyhow, that ended that. It was a good thing that he hadn't started selling them yet because that could have just as easily been a customer. He would quite easily have been paying someone for the rest of his life. 

And it's also probably why you have never seen any spring compressor of that kind of design on the market either. A lawsuit in the making. 

And I'll say this... just be extremely careful when you use yours (if you still have it) because it is in my opinion an extremely dangerous design and again, an accident waiting to happen and over time is almost guaranteed to hurt or under the right conditions, possibly even kill somebody. 

In fact, I'm going to discuss it with Gene and quite possibly remove any reference to the design and mount from our forum. I consider it to be that dangerous.

CDT

[Paul68]

Not for nuthin, but even given that the potential for the mounts breaking loose exists, that seems quite a lot of force to cause the damage you just described Charlie. Point being, wer'e not looking at a fully compressed spring, but only preload. I have no doubt you could lose a couple teeth, maybe even crack a jaw  if one got loose and hit ya just right, but tearing a chunk of flesh out of an arm seems a but much. I've recently done some testing of springs in regards to my own admittedly possibly misguided efforts, and loading an inch or two as with preload doesn't seem near enough energy to rip through inches of flesh. Severe bruising perhaps, but not tearing and ripping.

[CharlieDaTuna]

I got news for you Paul68. You need to read more regarding this and my post above and related information as well as other videos. In one video he is referring to, using it and making and selling it  as a full spring compressor. In fact, he talks above about using it on a Hunter Extreme. You are talking about 3-400 lbs and even more on some magnum guns of loaded spring pressure at near coil bind getting away.

 Gene and I were working on a gun and installing a new spring and it was almost fully compressed. It slipped off the Delrin block at the rear and let go. It just missed Gene and flew across the room and tore a chunk of wood out of a cabinet door about 12 feet away. And there have been plenty of stories and articles out there over the years about people getting getting ripped open, severely injured or badly hurt by flying spring blocks, springs or spring compressors failing. So don't tell me... or Gene... and all the others that have been hurt about what it can or cannot do.

The safety of our membership is paramount so don't even think of minimizing to our membership the dangers and injuries in the event that something like that occurs.

CDT

[GTA-Airgunner]

Hello again Folks.

Just as a note.  Given the controversy and potential liability of building and selling anything to work on spring guns, I have no intention of trying to market this product or its design (I had already come to that conclusion a while back).  I will post photos and other data on my own site when I have the time to do so in case people want to experiment on their own.

I have used it personally for over a year now on all manner of guns, yes including the Hunter Extreme, and have found it to be very useful.  There are dangers inherent to this kind of work regardless of what you use.  Diligence, comment sense, and never forgetting the energy that these guns can store just sitting still, is critical to avoid serious injury.

For example.. if you are working on a gun that is suspected to have a partially compressed broken spring, you would never want any part of your body in front of where that spring could come loose.  It would be like looking down the barrel of a black powder gun that had a misfire.  You'd want to take the same caution when working on a new gun that you are unfamiliar with.

Most of the guns that I use this compressor with are gas ram guns or gamo/crosman spring guns, i.e. very little preload on the springs.  While I've used it on more powerful guns without incident, they require even more concentration and attention to what's going on while you work.  Personally, I don't even like working on those guns.  I've done so simply to prove the concept to myself.

I certainly don't want to get into a big diatribe over this.  My intent for the original post was to show a folks how to simply disassemble and reassemble a basic NP based Crosman gun so they can get the most out of their airgun, not try and sell or promote a spring compressor.

Regards,

Rick Eutsler, Jr.
AirgunWeb.com

[Paul68]

And I "got news for you" as well Charlie. I was not referring to a fully compressed spring, and I see no other references to such as well. I don't disagree at all that a fully compressed spring is a serious hazard, but that is not what I was talking about. Perhaps YOU should pay a little more attention to what YOU read, and learn a little more regarding tact and respect for others even though they may not accept 100% of what you say as gospel or accurate. That skin of yours seems a might bit thin to be honest. I've been noticing this quite a bit as I've perused this forum, and this less than cordial response of yours is a fine example.

There is no denying your intents are well placed, and safety is indeed of utmost importance, but rather than take a minor disagreement as an opportunity to explain and teach, you've instead appeared to have chosen to blow it far out of proportion and misrepresent my position in order to defend and protect an ego.

At any rate, my observations are confirmed, and for that I thank you. I'll be taking my leave of this forum now, as I am not interested in , nor do I need, condecension or scolding.

[CharlieDaTuna]

Hey Rick… I was already aware of the fact that you stated that you were not considering making the spring compressor to market. What I was doing previously in my response to Bob P was relating the fact that many years ago somebody was considering the same spring compressor concept. In that response I also related to the results what had happened and injury that it had caused.   I was making no reference to gas rams in that post.

Paul 68 evidently did not read in its entirety or misread what I had said and/or took it out of context.   He also evidently did not read your reference to the Gamo Hunter extreme and it being used as a spring compressor.   I made no reference to any gas ram application but only as a spring application in that post. 

I certainly did not mean to blow anything out of nor do I think I blew anything out of proportion and I am certainly not thin skinned but can be a very critical when it comes to safety. And it is certainly not a question of defending or protecting my ego. It's just that I am very critical of anything that can be dangerous when it comes to protecting and preventing the possibility of any injury to the forum membership because of any misunderstandings or misinformation.

My problem is that I sometimes can be very blunt and to the point and some people can't handle that and take it personally. If that happens, my apologies.

I certainly understand your intent of your original post and what it is that you're contributing to our forum and that is much appreciated. And using the design of your compressor in the way that you're using it with a gas ram, and not as a true spring compressor, certainly greatly reduces but certainly does not eliminate the dangers.

Thanks again Rick and we looking forward to further contributions from you.

CDT

[CharlieDaTuna]

Paul68…. I’m asking you not to leave and to reconsider it but that is your decision. My intentions were not to be condescending or scolding or show you any disrespect. If that is the way that you perceived them then I apologize to both you and the members. But I do have my opinions and state them sometimes rather forcefully for lack of other terminology. That is especially true when it comes to any safety issues.

  CDT

[Tarheel]

I'm still working on finalizing the design for my spring compressor.

This thread has caused me to take a very cautious, careful look and make a couple of changes.

I'll post pics in a new thread, once construction gets under way. The design is definitely "overkill", to put it mildly ( you'll see what I mean later . . . LOL ! ), but my "changes" were mainly in the way the rifle action is restrained and supported.

I happened to have a bunch of "odds & ends" lying around and these are the basis for my spring compressor .

Thank, guys !

Dave

[Bob P]

Though Ive had no problem using the design on some powerful springers,there is a first time for everything! Think Ill just stick with my drill press..

Thanks Charlie