Photo cycle Dynamics in three or more Spring-Piston Airguns. – Preface

Another title might be: “Conversations between three enthusiastic airgunners: a scientist, a deep observer of life plus great admirer of beauty”, and  an engineer.

Or even, we could even have a joke: “A scientist, a 

yogi   and a n engineer   enter the bar.. ”

The fact is these blog entries (we THINK we will stop at 9) that we plan on publishing each fortnight, started as an informal conversation; not in a pub, but in a forum; had been then taken to PM’s, so when the project really began to flesh out, formal EMail’s started flying all around.

We formally convened on Valentine’s Day 2020, and yes it was truly an auspicious day because everything went reasonably well. It has been the pleasure, and a great freedom, to work with these two gentlemen during the last 13½ months.

So , let me introduce my buddies to you.

The particular originator of all this was my buddy “WL”, who chooses to utilize ONLY the nick/handle “Yogi”, each here and when posting within the GTA forum; he had very pertinent questions about exchange port (TP for short) geometry (diameter, orientation, length) and when I explained the theories, he ventured the thought of underwriting the effort to deliver different guns to different individuals who could study and clarify the possible relationships.

At about the same time, Ruben Cerne, who uses the particular nick/handle “JohnC” when publishing in the GTA, came up with the thought of looking into the overall dynamics from the shot cycle in spring-piston guns.

Mark has a PhD in fresh condensed matter physics and it is a physics professor in a well known research university   so , their participation was an opportunity which was too precious to let it go.
He or she was very enthused which includes experiments by Jim Tyler on measuring recoil movements in airguns, which were released in the British “Airgun World” magazine. .

On my aspect, I had recently finished the particular collaboration with Steve Herr (NitroCrushr) about the Four Component “Saga of a DIANA 56 T/H” and, as drawing a line under of that report was the invoice of Steve’s sled. I actually hadn’t had time to research in detail how to expand the functionalities, so the project suggested by John seemed an appropriate vehicle with the ideal applicant. I proposed the signing up for of forces to all 3 parties, with the caveat which the TP geometry aspect will be looked at just tangentially, nevertheless, Yogi was generous sufficient to help us get every thing underway.

And thus it is that we (99% John) have been working in these concepts, developing the tools to START interpretation and understanding the REALITIES at the rear of the APPARENTLY simple mechanised devices we love (and sometimes hate) that are spring-piston airguns.

All of us FULLY REALIZE this is only the beginning of a new conceptualization. And we realize that we will not really do it all on our very own. So , part of the intention of the NINE part series would be to give (in the soul of the 1950’s “Popular Mechanics” magazine) almost anyone with a right amount of common sense and useful skills, the knowledge and knowing to make up HIS/HER PERSONAL research devices/apparatus, and allow them to start researching to the phenomena that actually make our own airguns what they are, what provides them “character”, what makes all of them “tick”.

We all also HOPE that the sector realizes that the shooters have become more and more sophisticated, and that a few “Benchmarks” CAN be set which are quantitative and hard-data centered enough to dispel all of the mystery and “dark-arts” environment that surrounds the “tuning” of spring-piston air weapons, or the qualities of a style.

Now, regardless how much science you want to put in anything, NOTHING regarding human being interaction with machines will be written in stone (or parchment / paper). It is far from a dogma of belief. Because we, humans, are usually vastly different. So , all of us don’t purport to have appeared to the ideal recipe to get a gun that will work for everybody, but we do think that will measuring some key facets of the shot cycle need to enable customers to select much better the gun that will fit them; and allow   manufacturers   to generate better products.

I know that will, in a way, we cheated. Exactly why? because we chose with this exercise three of the best types of spring-piston airguns of all periods (Walther LGU, Walther LGV and FWB 124). We can say that the dynamics in these 3 highly tuned airguns are usually as good as they can get, And had the added benefit that the Walthers are simply the same rifle, just one utilizes the barrel as a bending lever, the other has a set barrel and a separate bending lever.
​BUT, in our defense, we are going to say that this also allowed all of us the tangential look into the TP geometry, since one (the LGV) has a long exchange port and the other (the LGU) has a short 1.

The nine parts of this course are:
Chapter one Diagnostic equipment: How can we all understand better what our surroundings rifles are doing?  
Chapter 2 . How do the particular Walther LGU, Walther LGV and FWB 124 evaluate?
Chapter 3. Team statistics: What can target organizations tell us about the accuracy of the air rifle?
Section 4. LGU/LGV powerplant exchange:   How does swapping airgun pistons and springs within an LGU and LGV influence performance?  
Section 5. Does Krytox enhance performance?
Chapter six. Does more mass within a springer air rifle lead to better accuracy?
Section 7. Does a higher power spring decrease accuracy in the springer air rifle?
Chapter 8. What happens whenever you remove the LGU’s muzzle cover?
Chapter 9. A conclusion: What does this all imply?

Therefore , without further ado, We yield the floor to Ruben Cerne.


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