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Thread: thin weld bead
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23rd November 2012, 11:32 PM #16
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23rd November 2012 11:32 PM # ADSGoogle Adsense Advertisement
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24th November 2012, 09:44 AM #17GOLD MEMBER
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not by this little black duck.....its going to be a firing model cannon....0.5" calibre with black powder and all that whiz BANG stuff...umpteen million (well maybe not that many buts lots n lots) psi in the barrel with unknown forces trying to push the trunnions out sideways to the barrel uh uh! ..its one of the reasons why i wanted as much barrel as possible so that forces (expanding gases) will need to push the projectile out the front and not spend its efforts trying to get out the to the side of the barrel ...thats about where I'll be standing when I light it up
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25th November 2012, 11:46 AM #18Senior Member
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Depending on the slug and powder charge weight you could be looking at up to 5,000 PSI.
3 projectiles in one go. Wiley Coyote style.
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25th November 2012, 12:21 PM #19GOLD MEMBER
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25th November 2012, 11:13 PM #20
I understand what you're saying, but by drilling holes, albeight shallow ones, to take the trunnions you've already locally weakened the barrel somewhat. I was looking for a way to return the full circumfrential strength to the barrel.
Perhaps teh trunnions shoud be welded to teh outside of the barrell -- i.e. do away with the shallow holesregards from Alberta, Canada
ian
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