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Air Gun Home Forum Index » Rifles » 2240 pump action
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2240 pump action 
PostPosted: Wed Jul 06, 2011 2:39 pm Reply with quote
Alstone
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I’ve been looking for something to make out of a 2240, and so far I come up with an auto loader which is operated by a pump action system, the heart of the gun would be an auto loader similar to my 2240 pistol, no bolt or loading port just a five shot magazine.

Any comments or different idea’s appreciated.

Al


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PostPosted: Wed Jul 06, 2011 3:57 pm Reply with quote
rsterne
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Cool idea.... The Hatsam AT44 pump is difficult to cycle because it is directly linked to the hammer for cocking.... It needs to have a system to increase the travel and reduce the effort, IMO.... Something to think about when you are designing it....

Bob

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PostPosted: Thu Jul 07, 2011 10:39 am Reply with quote
Alstone
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rsterne wrote:
Cool idea.... The Hatsam AT44 pump is difficult to cycle because it is directly linked to the hammer for cocking.... It needs to have a system to increase the travel and reduce the effort, IMO.... Something to think about when you are designing it....

Bob


Good idea Bob, I will couple the pump to the bolt on each side of the breech, which wiil give me 1" of movement and I would like at least 2", so I'll have to give it a bit of though, also I need to find some way of locking the bolt as well.

One thing I was going to ask you was what type of tube I need for the valve & Co2 bits, I intend to run it from the extended Co2 loading port to the butt, and put the controls for the power adjuster there, Do I need High pressure tube or just a good quality one?

Al

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PostPosted: Thu Jul 07, 2011 10:55 am Reply with quote
rsterne
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If the powerlet is going to seal to the valve as in a 2240 the tube isn't pressurized so it doesn't matter.... If you are going to pressurize the tube you will need to use a valve like a Disco, sealed into the tube by O-rings and located with extra mounting screws.... In that case I would use steel DOM tubing 0.875" OD x 0.065" wall (as per the Disco)....

Bob

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PostPosted: Fri Jul 08, 2011 1:32 am Reply with quote
broommaster2000
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Hmmm, shotgun style stock? But I guess you are gonna base it on a 2240 so maybe something else. You could make it tactical, I'm sure it would look bad a$$ with one of those AR15 stocks.

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2240 pump action 
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