The stainless collar I have on the shaft above my bearing keeps sun off the area right next to the shaft. If the hole gets too big it will be from wear, not UV.
Joe Coquina C&C 35 MK I From: CnC-List [mailto:[email protected]] On Behalf Of Dennis C. via CnC-List Sent: Wednesday, May 08, 2019 4:29 PM To: CnClist <[email protected]> Cc: Dennis C. <[email protected]> Subject: [EXTERNAL] Re: Stus-List 35-1 Upper rudder bearing modification Neil, Yeah, I knew Delrin wasn't the best. Considered UHMW, but the Delrin was convenient. Regardless of the disc, I see having a sleeve bearing set in the disc that I can easily change as an advantage. Would be easier to swap the bearing than to refabricate the disc with the 6 bolt holes and the center hole each time. As I said at the end of my document, maybe a non-metal sleeve bearing. Just a "play" project for now. Dennis C. Touche' 35-1 #83 Mandeville, LA On Wed, May 8, 2019 at 2:28 PM schiller via CnC-List <[email protected]<mailto:[email protected]>> wrote: Dennis, I think your problem is accelerated by UV degradation. Delrin isn't all that good in UV exposure. I would suggest using bearing grade PEEK but that is a lot of overkill. You may gain some advantage by making a sunbrella cover for it (or just replace it every 7 years).
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