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Reducing a 3/4" barrel to 1/4"
Posted: Thu Aug 06, 2009 2:23 pm
by boyntonstu
Reducing a 3/4" barrel to 1/4"
A 1/4 hole in a 2" piece of 3/4" dowel, a groove, an O ring, epoxy.
The 1/4" tube/piston goes into the 3/4" barrel.
A split dowel at the muzzle, a strong piece of Nylon reinforced hose and a pair of hose clamps, fixes the 1/4" barrel to the main chamber.
This technique could be used for almost any air cannon.
If I blow into the 1/4" tube, the 3/4" piston and 'arrow' is easily forced out of the 3/4" Type M tube. This movement indicates good seals and sliding smoothness.
BoyntonStu
Posted: Thu Aug 06, 2009 2:34 pm
by Technician1002
Take two of these for the strength of soldered fittings.
3/4 to 1/2 and 1/2 to 1/4.
Posted: Thu Aug 06, 2009 5:21 pm
by boyntonstu
Technician1002 wrote:
Take two of these for the strength of soldered fittings.
3/4 to 1/2 and 1/2 to 1/4.
Thanks,
I agree, but I am in the testing stage of a slingairgun.
I need to determine the distance from the end of the piston stroke to the barrel breech.
I need to trombone it.
In my slingairgun there is no built up pressure to be concerned about.
Once all length are determined, I will go to a soldered or a screw barrel attachment.
What I have for experimenting is perfect for my needs.
BoyntonStu
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