[quote=turbohobo]On my P18, the dolphin striker post passes through the front crossbeam, and srews to the baseplate, leaving about 4" of post above crossbeam, the ball screws onto the top of the dolphin striker post. The post is held in place by the baseplate which is rivited to the crossbar, bottom of the post is attached to the dolphin striker rod. Lot of stress placed on the post and is transferred through the rod to the crossbeam, so yes fatigue would be your probable cause.
Some things to look for as factors contributing to stress would be standing rigging too loose allowing mast to "jump" up and down on ball and sriker rod. Other cats have a "captive" setup where after stepping the mast a pin is inserted through the mast base, it's postioning just below the ball effectively not allowing the mast to "jump off" the ball, always check that this type of setup is rotating freely once mast is stepped.
Turbo
Prindle 18[/quote]
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