The second that the tip of the drill bit goes from fiberglass/Delran to stainless you will feel it and know you’re done drilling. And is a little scratch or divot really going to hurt the 3” schedule 80 stainless pipe (or 3” stainless bar stock) the rudder shaft is made from? (With a carbon fiber shaft I’d definitely drop the rudder.)
It’s probably better if the rudder is out, but I’m not sure it makes a significant difference. Having enough thickness of the fiberglass/Delran to accommodate the tap and the threaded length of the zerk was a bigger concern for me. But the fiberglass tube on my 38 (no Delran bushings) was closer to ½” thich than ¼”, so no problems. Rick Brass Washington, NC From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of CHARLES SCHEAFFER via CnC-List Sent: Saturday, April 27, 2019 9:45 AM To: cnc-list@cnc-list.com Cc: CHARLES SCHEAFFER <cscheaf...@comcast.net> Subject: Re: Stus-List Rudder Squeeking C&C 35-3 Hi Bruce, You didn't state if you drilled the fiberglass casing with the rudder still in the boat? How did you drill through the delrin bearings without drilling into the SS rudder post? C
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