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Hello Frank, I had taken a good number of pictures this summer when I took the sub apart, but didn't have enough time to share them with the group. So I'll post them at a pace as I get a chance. There was some loose packing material on both sides of the rotary thru hull. The motor thru hulls had delron type wedge bushings. I'm not sure what George installed, or what was changed later. I'll post those pictures next. I've been looking at Dan's grabber arm and like the idea of a pneumatic arm with Bimba cylinders, using a SS plate for multiple thru hulls. Alec has one on the back of his sub for O2 lines and what not on the port side of the rear head. My friend that used to work for Schilling Robotics making the Conan Arms and what not, will assist me in the arm design. So it might be a interesting device when done. http://www.schilling.com/products_ManipulatorSystems_CONAN.php Szybowski From: ShellyDalg@aol.com Date: Tue, 20 Jan 2009 02:55:14 -0500 Subject: Re: [PSUBS-MAILIST] The Long Arm of the Claw To: personal_submersibles@psubs.org Hi Brent. I was able to negotiate with the provided links. Good photos. Got lots of work ahead. I wonder why George didn't use bronze bushings to prevent wear on the rods. And maybe some thrust bearings.
If it was me, I'd start over with the claw. Make something quick and nimble. Dan has that one on his blue sub, and although it's not real quick, it is nimble. He runs it with Bimba cylinders using a type of vegetable oil and a small pump. I've got a picture or two of it some where I could send you. Anyway, thanks for the good pics. Oh, and by the way, for Jay and Vance, It's been 75 here too for the last few days. Can't complain about the weather but I'm afraid we're in for big trouble if we don't get some rain. Frank D. |