Getting started with a precharged air rifle: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

This report covers:

  • Fill options
  • Practicality
  • Filling a big bore
  • Tank size
  • Filling a smallbore PCP
  • The point
  • Air compressors
  • Booster compressors
  • Stand-alone compressors
  • The future

I said in the last report that I would write this report on filling options for PCPs. I’m writing this for the new guys who aren’t sure which way to turn. Any way you go represents an investment, so this is something that needs to be given a lot of consideration. Hopefully this report will start a discussion of that.

Fill options

There are two basic ways to fill a precharged airgun. Either the air is introduced from a container where it is stored until called for or else it is put in and compressed as the fill is made. The first option is based on an air tank of some kind. The second is either a hand pump or a small air compressor that connects to the airgun. I will talk about both of these but first I want to discuss practicality.

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Beeman R8: Part 7

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6

A history of airguns

This report covers:

  • New mainspring
  • The compression chamber honing
  • The Rail Lock Compressor
  • Cleaning
  • Piston seal
  • Installed the new seal and mainspring
  • Back in the stock
  • Cocking effort
  • RWS Hobbys
  • RWS Superdomes
  • JSB Exact RS
  • Firing behavior
  • Conclusions so far

The new mainspring and piston seal Pyramyd Air sent for my R8 arrived and I installed them last Thursday. This will document how that installation went and look at the velocity results, plus the powerplant smoothness.

New mainspring

The new mainspring is made from better wire than the stock Weihrauch spring. Gene Salvino has reports of guns with up to 9,000 shots with this spring that have lost little velocity, if any, since installation.

I knew there would be a lot of interest in this mainspring, so I examined it carefully and also photographed it next to the existing spring. The new spring wire is silver colored, where the Weihrauch spring wire is a darker color. The new spring appears to be about one inch longer than the original, but I don’t think it has been scragged.

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Beeman R8: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3
Part 4
Part 5

A history of airguns

This report covers:

  • Don’t over-lubricate
  • Rail Lock mainspring compressor
  • Degreasing
  • Lube the piston seal
  • Clean the mainspring
  • Finish the assembly
  • What is it like now?
  • Velocity test
  • Discussion

Last Friday’s report set us up for today. I was discussing “tuning” airguns before knowing how they performed. I didn’t do that with this rifle, but that discussion loosened up a lot of minds, and I got many suggestions of what to do with the R8. I wanted to disassemble it and remove most of the “special” grease I had applied, and then Gene Salvino of the Pyramyd Air tech department and I had a long conversation about what was happening with that rifle.

Don’t over-lubricate

Gene said it is very possible to put too much of that grease into a lower-powered spring gun. He said if you do that you’ll get exactly the result I got with the R8 — a reduction of several hundred feet per second in the velocity.

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Air Venturi Rail Lock spring compressor: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor
The Air Venturil Rail Lock spring compressor is compact.

Part 1

This report covers:

  • Attaches to scope rail
  • Enter the R8!
  • R8 out of the stock
  • Remove the Rekord trigger
  • Unscrew the end cap
  • Install the mainspring compressor
  • Removing the end cap
  • One last photo
  • Assembly
  • Evaluation so far

Today I start testing the new Air Venturi Rail Lock spring compressor. Many of you have expressed an interest in this tool, and I want to test it as broadly as possible, because all airguns are not made the same.

Attaches to scope rail

This compressor attaches to the scope rail on your airgun. It will work on both pistols and rifles — as long as there is a scope rail to attach to. It attaches to both 11mm dovetails and Weaver/Picatinney dovetails. The rails have to be close enough to the rear of the spring tube to allow the compressor to work, but that will become clear when you see the pictures.

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Air Venturi Rail Lock spring compressor: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock compressor
The Air Venturil Rail Lock spring compressor is compact.

This report covers:

  • Attaches to the scope rail
  • Let’s look at the unit in detail
  • How shall I test it?
  • Developed for gas spring guns
  • Installation
  • The coolest feature
  • Quirks
  • The price

Today we start looking at a mainspring compressor that’s very different from any other. The Air Venturi Rail Lock spring compressor is a compact 1.5-pound unit that attaches to the scope rail of the gun being disassembled. The threaded rod is then pressed against the end cap of the rifle — whatever configuration that might take. From that point this compressor works the same as any other, but in the next few reports I will show you in detail, plus today we will look at its design very closely.

Attaches to the scope rail

Right off the bat you might be wondering if this unit will fit most spring-piston airguns. As long as they have a scope rail either cut into the spring tube or attached, it will work. There are a few vintage spring rifles and pistols that don’t have rails like the Haenel model 28 pistol and some Diana model 27 rifles, and this compressor won’t work without a rail. But the majority of spring rifles being sold today, plus a number of spring pistols, do have a scope rail. On them the compressor should work well.

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Air Venturi air compressor: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Air Venturi compressor

Air Venturi air compressor.

Part 1

This report covers:

  • The state of B.B.
  • AirForce Texan .357
  • Otho is drafted!
  • This compressor is fast!
  • Water-cooled
  • Oil lubricated
  • Performance
  • Bottom line?

The state of B.B.

Time for a status update on old B.B. I had an annual eye exam last week and it turns out the problem with my right eye isn’t so much the retina repair as a cataract that is growing rapidly. The good news is it has reached the point where is needs to come out, so tomorrow I go in for a measurement for the operation. I expect the cataract to be removed very soon.

The problem I have had recently with open sights isn’t because of my retina operation. My glasses corrected that. But the growing cataract has degraded my prescription over the past 6 months to the point that no amount of correction is enough. I can still see through a scope well enough, but open sights have to be shot with the left eye. So, I am looking forward to this operation. Why do I tell you this?

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Air Venturi air compressor: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • The problem
  • Air Venturi compressor
  • Temperature gauge
  • Technical
  • Pressure gauge
  • Oil lubricated
  • Fill hose
  • The test compressor
  • First time operation
  • I am impressed!

Today I start a report that’s going to have a major impact on your airgunning world. Even if you are a dyed-in-the-wool spring-gun user, this report should have an influence on how you view the world of precharged airguns.

The problem

Precharged pneumatic guns work by storing a large supply of compressed air that they use in measured amounts with every shot. They are the oldest type of airgun — dating back to the middle 1500s, we think. And the challenge has always been how to get compressed air into them.

I’m not going to give a lot of history today, because I want to get right to the point. So let me bring you up to speed. The challenge has been to produce a high-pressure compressor that compresses air to 4,500 psi in a reasonable amount of time, and to make that compressor as easy to operate as possible, because the people who use it will have little to no prior knowledge of compressors. All of that must be done at a price people can afford.

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