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This was Dan Brewer's sub from the 2006 convention in Holland Michigan. Dan
used Bimba air cylinders filled with vegetable oil and a small 12 volt hydraulic
pump inside the sub. I think the claw could rotate.
He has a disk type thru-hull welded into the hull with 5 or 6 tubes
connected for the actuators.
It was a very simple system and he picked up a golf ball from the bottom of
the dive site.
Frank D.
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