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Mounting the rudder box. Eyebolt size doesn't compute.


John Teetsel

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The plans call for 5/16" eyebolts screwed thru the rudder box and stern post to mount the rudder assembly to the boat. The "eye" of a 5/16" eyebolt is about 3/4" dia but the plans say to use 3/8" threaded rod to connect the two pair of eyebolts (top & bottom). That's an awfully sloppy connection. What am I missing?

Anyone have a "Plan B"?

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I went to Lowe's and got a small package of Oatey gray vinyl pipe clamps with a flange on them. They were split and I trimmed them a little bit to fit in the eyes. I put two 3/8" "tee" nuts in them and then tightened up the threaded rod. I put a 3/8" ID length of PVC pipe over the threaded rod. Then an acorn nut on both ends and that finished it off. It was really slick, smooth and doesn't bind up. The gills will go over the outside to keep turbulence from interfering.

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Do the plans call for vinyl sheathed rod? I'm not sure, but what I did that worked great is I put some copper pipe there and ran the rod down it and held it in place with the nuts and washers that were on the rod anyway. It fits perfectly. Not much differntly from what was just suggested, but there was some laying around, and it looks a little nicer too, of course if you put the cove material on you don't see it, but I have yet to do that yet.

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I used a long 1/2" Sch 80 plastic nipple from the sprinkler department at The Borg, and turned down the ends (after cutting the threads off, of course) to fit into the eyebolts I was using. Worked really well. But from this thread, I think we have all handled it differently!

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For one more option, I used stainless eyebolts with welded eyes ordered from Suncor Stainless. The threaded rod is 1/2" and it is covered with Pex tubing that just fits over the rod and through the eyes. I suppose the O.D. of the tubing must be 5/8 or 11/16".

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