Author Topic: Air Stripper  (Read 297 times)

d_boom

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Air Stripper
« on: December 24, 2018, 05:31:00 AM »
Is there an accuracy benefit in using an air-stripper?  I installed an air-stripper I made on my Gamo Gauntlet air rifle after
removing the damaged moderator.  The function of my home made stripper was to redirect air back into the barrel shroud,
a 1" thin wall aluminium tube installed over the barrel.  Baffles were installed in the muzzle end of the barrel shroud with
the 1st baffle curved directing stripped air back towards the receiver where the air is vented.


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Alan

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Re: Air Stripper
« Reply #1 on: December 24, 2018, 07:58:55 AM »
Air strippers do help in accuracy, if the gap (between the muzzle and cone) is adjusted correctly. I've never seen one used with a shroud. Typically, the air deflector (a stripper of sorts deflecting the air backwards) is designed to also act as a barrel tensioning device to minimize vibration. In other words, the barrel is under extension, while the shroud is under compression.

The guy who needs to answer this is Bob Sterne, and I suspect he will.
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Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

rsterne

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Re: Air Stripper
« Reply #2 on: December 24, 2018, 08:12:51 AM »
Hard to comment on any one specific application.... but I have found that a properly adjusted air stripper can help accuracy.... but I have not used one inside a shroud.... It does not appear that your stripper puts tension on the barrel, so I don't think that will be part of the tuning equation....

BTW, it doesn't appear in the photo to be particularly well aligned with the barrel....

Bob
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d_boom

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Re: Air Stripper
« Reply #3 on: December 24, 2018, 10:33:57 AM »
Sorry for the poor photo - I have not had any pellet clipping issues.  The threads on the barrel are oversize for a tight fit to
the air stripper.  The air stripper was machined, except for the mill cuts, in one setup on the lathe so threads and bore are
all is in alignment.  The brass air stripper was also made in one setup on the lathe so OD and bore are concentric.  Pellet
clearance is .010" per side without any pellet clipping.   
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Alan

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Re: Air Stripper
« Reply #4 on: December 25, 2018, 05:09:26 AM »
As I mentioned above, the gap between the muzzle and the start of the cone is very critical for accuracy, and to a lessor degree, clipping.

I messed with a Hatsan stripper a while back, and never did get it to work as well as I was lead to believe it would. And I must say, there is a reason why a lot of PCP airguns use a combination barrel/shroud tensioning set up.
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

Nicesurprice

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Re: Air Stripper
« Reply #5 on: December 30, 2018, 02:19:35 AM »
And do not forget.
Eveything has to be perfect allined.
Often treathing is poorly added to the barrel.
And go for the smallest boresize possible.

Grts
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