Suitable Aluminum tubing for 7/8 tubed guns--Prod, Disco, Maximus, QB???

[Back_Roads]

 With the availability of small CF bottles and regulators why mess with a tube ? Or just get a gun that is built with a rated tube such as the PP 750 or the like in rifle version.

[Blutroop]

I too was planning on building a small aluminum tubed gun. I’ve also thought of using a block of aluminum and a cf tank. Life and circumstances haven’t let me work on any rifles lately.

Anyone that will criticize someone else and accuse them of being out of shape for wanting a lighter rifle has obviously never been dropped off on a real hunt.

[mackeral5]

With the availability of small CF bottles and regulators why mess with a tube ? Or just get a gun that is built with a rated tube such as the PP 750 or the like in rifle version.

  It all depends on what one is trying to accomplish--everyone has different vision and goals for projects.  "small" cf bottles are still rather large, especially when combined with a regulator.   Bottle guns don't lend themselves to traditional stock arrangements, etc.  Again, it depends on what one is trying to accomplish.  i have my share of bottled guns both regulated and unregulated...

in this instance, I asked the question out of curiosity, I have a couple of SS tubed QB78 based PCP's that it would be neat to lighten up a bit.  it makes no sense to do so from a financial or functional point of view.  If all i were looking for was a lighter weight gun I could just buy an avenger, etc.  I doubt I will ever follow through, but it was worth asking the question and learning through the responses.

Keep in mind that English is a second language for many (such as Marco) so statements that are intended to be bold often times sound more harsh than truly intended.  Marco merely doesn't want anyone to blow themselves up chasing unrealistic goals at least that is how I interpreted his statement.

[Blutroop]

Sorry Marco, your comment struck a nerve with me. I failed to see it probably wasn’t meant to.
I was thinking of welding the ends together but the more I thought of it I started thinking maybe thread the ends. Then I started thinking instead of making a valve that fits inside with a throat as big as able, perhaps a valve with a Air Force style arrangement that can use full size of aluminum id.

[MJP]

Have been away for a awhile, no harm done. I don't encourage the use of aluminum on airtube for the fatigue reason. If you want light gun make a little shorter tube.

Marko

[BigBird]

Sorry Marco, your comment struck a nerve with me. I failed to see it probably wasn’t meant to.
I was thinking of welding the ends together but the more I thought of it I started thinking maybe thread the ends. Then I started thinking instead of making a valve that fits inside with a throat as big as able, perhaps a valve with a Air Force style arrangement that can use full size of aluminum id.

Not sure what you mean by welding ends but for viewer's sake, in my mind welding ends would add another safety variable with even greater capacity for failure than making a tube out of whatever aluminum you choose.  That said, I don't weld or know your capacity for metallurgy but if you are welding tubes you are taking something with tested specs probably work hardened to an unknown annealed state (or potentally brittle state if you try heat treating it afterwards -adds or changrs welding variable).