If you entered a class with Swing rigs, have you taken a moment to figure out how the swing rig swings ??
I’d thought about the deck level bearing for the simple reason one can see it. But have you considered how the load below deck is handled? I hadn’t until I found a rather smart ring bearing lying on the concrete beneath my boat stand last Sunday. See photo above. That little circular bearing is a press fit (note to self : or “press and glue fit”) into the end of the carbon tube. That goes down the hole through the deck and engages on a little vertical cone at the hog. Then your mast swivels like a merry-go-round !!
Datchet Radio Sailing - Making It All Much Easier !! 