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Air Gun Home Forum Index » Rifles » Crosman 69,8 Cm (27,5 Inch) Tube Goto page 1, 2  Next
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Crosman 69,8 Cm (27,5 Inch) Tube 
PostPosted: Mon Jul 21, 2008 2:26 pm Reply with quote
broommaster2000
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Hey everyone,

Does anyone know a custom part manufacturer who would be capable and willing of doing a job like this? I'm looking to hook up my Crosman 22XX with an extra long tube, to get more shots and a bit of a more muscular look on the gun.

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PostPosted: Tue Jul 22, 2008 4:22 am Reply with quote
broommaster2000
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For people willing to help me, I have found something usefull:


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PostPosted: Tue Jul 22, 2008 6:28 am Reply with quote
Alstone
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I assume that the drawing is for american threads so it must be in inches, but what are the 0 with a / slash through, tolerances or radi ?, also there are no dimensions for the layout ie: between holes etc.

It would need to be a bit better drawing to work off Anton unless you had the original tube.

Al Question

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PostPosted: Tue Jul 22, 2008 6:30 am Reply with quote
broommaster2000
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The thing is that I didn't draw it. Neutral I'm practically clueless with stuff like this. Mr. Green

I do have the original tube, so I can look how far the parts are supposed to be apart.

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PostPosted: Tue Jul 22, 2008 6:55 am Reply with quote
broommaster2000
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How about this?



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PostPosted: Tue Jul 22, 2008 7:21 am Reply with quote
23ib0d0n
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Alstone wrote:
I assume that the drawing is for american threads so it must be in inches, but what are the 0 with a / slash through, tolerances or radi ?, also there are no dimensions for the layout ie: between holes etc.

It would need to be a bit better drawing to work off Anton unless you had the original tube.

Al Question
An american symbol meaning diameter ~ circle with bisecting line . . .
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PostPosted: Tue Jul 22, 2008 7:49 am Reply with quote
broommaster2000
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Mr. Green Aren't we happy campers.

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PostPosted: Tue Jul 22, 2008 8:09 am Reply with quote
Alstone
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23ib0d0n wrote:
Alstone wrote:
I assume that the drawing is for american threads so it must be in inches, but what are the 0 with a / slash through, tolerances or radi ?, also there are no dimensions for the layout ie: between holes etc.

It would need to be a bit better drawing to work off Anton unless you had the original tube.

Al Question
An american symbol meaning diameter ~ circle with bisecting line . . .


Cheers J it's the same over here, but used in front of the horizontal sizes it means tolerance, which is OK but there are no hole sizes to apply the tolerance to, the vertical sizes are the distance from the left which is OK.

So all I need now is hole sizes and slot sizes.

Al

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PostPosted: Tue Jul 22, 2008 12:12 pm Reply with quote
broommaster2000
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What do you mean with hole and slot sizes exactly and how should I measure them?

There is also thread where the front cap goes, and I have no idea what kind of thread that is. I do have a 2260 and a SSP 250 tube here and they are almost exactly the same, except for the fact that the SSP 250 doesnt have have a groove ( the one on top, which is the top drawing in the picture )

It almost seems you're willing to take up the challenge, Al. Mr. Green

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PostPosted: Tue Jul 22, 2008 1:15 pm Reply with quote
Alstone
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Anton
On the drawing there are no dimensions for the holes or the width of the slots, I was thinking of doing the job for you, but now you say that there is a thread on the end of the tube, this puts it out of my capabilities, as I cannot get a tube of that size through the headstock of my lathe, and that I would need to do to thread it, the rest would be no problem.

So I have worked out another way for you to get the job done a lot cheaper and quicker. Cut the orignal tube in half near to where the two capsuls meet get a new piece of tube the same diameter and the length of a capsul, insert this in the gap between the two orignal parts, slide two thin wall collers over the joints and silver solder.


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PostPosted: Tue Jul 22, 2008 1:28 pm Reply with quote
broommaster2000
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Hey, that kind of makes sense... Shocked

The thing is, that the tube works as a resevoir. Do you think it would be able to hold the amount of pressure CO2 produces?

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PostPosted: Tue Jul 22, 2008 1:39 pm Reply with quote
Alstone
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Yes no problem you need about 25mm overlap, so the collars need to be 50mm long, and it will hold anything you are likely to put in to it, silver solder will give you a very strong joint better than brazing and not as difficult as welding if done properly.

Al

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PostPosted: Tue Jul 22, 2008 4:01 pm Reply with quote
23ib0d0n
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Alstone wrote:
So all I need now is hole sizes and slot sizes.

Al
Isn't this it?
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PostPosted: Tue Jul 22, 2008 6:32 pm Reply with quote
Alstone
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I've got it sorted now J it's just the way it's written and laid out, I'm use to engineering drawings.

Al

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PostPosted: Tue Jul 22, 2008 8:54 pm Reply with quote
23ib0d0n
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Alstone wrote:
I've got it sorted now J it's just the way it's written and laid out, I'm use to engineering drawings.

Al
That's what it is {in the US} Wink
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Crosman 69,8 Cm (27,5 Inch) Tube 
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