We had Calypso's balsa cored rudder off the boat last year for repairs. Water poured out of the exploratory holes we drilled in the fiberglass skin, low and forward near the area needing repair.
After the rate of flow slowed we got out a 3" hole saw and cut larger exploratory holes looking for the edges of the wet balsa area. One of the things we noticed is water leaking down from the top (likely seeping in from around the SS rudder shaft) would often be stopped from draining all the way to the bottom by resin filled channels between sections of balsa. We found evidence of balsa that had been wet for years. On a large balsa core rudder it is unlikely it would dry completely with a few drain holes in the bottom even over a winter. With Calypso's rudder we opened up enough skin on one side to expose the wet balsa areas, removed the damaged core and dried the rest. (We did the work in July so even in Seattle the hot and dry weather did the trick in two weeks.) We repaired the skin where it was removed and added cloth around the leading edge to reduce the chance of more damage from log/debris strikes. To improve the seal around the rudder shaft, we ground out a ΒΌ" V groove and filled it with 3M 4200. We did debate using an epoxy (like West's G-Flex) but decided that epoxy would not bond well enough to the SS. At rest, Calypso's rudder/shaft interface is slightly above water. We will watch this spot closely and renew the 4200 when needed. Martin Calypso 1971 C&C 43 Seattle [cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David via CnC-List Sent: Friday, June 06, 2014 11:19 AM To: CNC CNC Subject: Re: Stus-List c&C 24 rudder detail George, On my 40 it weeps all winter. I drilled about 6 holes (per my rudder expert) this and the result was the same as in years past. Still not sure what I am going to do. David F. Risch 1981 40-2 (401) 419-4650 (cell) ________________________________ To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Date: Fri, 6 Jun 2014 14:15:01 -0400 Subject: Re: Stus-List c&C 24 rudder detail From: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> I +1 this. I still have a hanger in my basement (actually next to the furnace) where the rudder used to spend its winters. It was completely dry the next spring. Marek From: George Cone via CnC-List<mailto:cnc-list@cnc-list.com> Sent: Friday, June 06, 2014 9:16 AM To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Subject: Stus-List c&C 24 rudder detail Ed, I am based in Burlington too, and I also have the details of water in the rudder (on a 40), I drilled the 2 holes, one at the top and one in the bottom in the fall(so that it could possibly drain better, it was still weeping last weekend when I sealed the holes back up for the summer, I'll probably redrill them in the fall. So plan that it will take time to get the water out, I would recommend in your case you consider taking the rudder home in the fall and leaving it in the furnace room for the winter with the holes in it. Marine Tex is a wonder sealer for the summer, and fast George Cone C&C 40 La Vida ________________________________ _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com<mailto:CnC-List@cnc-list.com> To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com<mailto:CnC-List@cnc-list.com> To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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