Hello once again men ! I been gone awhile ., getting ready for my IDC (Instructors Development Course) . Yes I am nervouse about it. Any way I do not have close ups of Wes's 1 1/2" bore 6-pack.., trunnion attachment handy., however I do have photos of one of my 1" bore swivel gun trunnion attachments.
In my humble experience these are my findings.
All my afore mentioned guns have precision fit swivel yokes . I believe if there is some play in that area ., perhaps that could cause trunnion attachment problems. My 1" bore is from Canadian Cannon Company (The pics) . Dom built the yoke as to have NO-PLAY from left to right ., and NO-Play in the trunnion diameter ., this holds things in a tight precision package . I believe all of this is just as important so the gun stays as was machined.
I have fired these setups many times with round ball and have no play to date. I will however be welding 4 of the six-pack as the intention when they were built was screw in AND welded. We did notweld at that time dueto shipping ., I could ship in a more slender box and save akot shipping 6 guns. Someone here in the PI thinks they can weld the other 2 guns (Bronze) as well I like to see their work first before letting them arc across Wes's awesome work. The Canadian Cannon I will leave un welded as it does not live fire anymore in the PI. However I believe it is just fine . No play with many rounds thru it.
I am more than confident with the screw in trunnion for my applications (Ball weight and powder loads) however to use a screw in and weld...., well that would really be the way. Note ., I have not fired these in a less precision wooden trunnion cap type mount.