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Post by Mike P39 on Dec 19, 2005 23:36:24 GMT -5
I have a Pearson 39 which has almost the identical centerboard system as the 35. Was wondering if anyone here has replaced the internal sheaves in the conduit system (i.e. the first one as the cable enteres the boat). I had mine apart last season reeving a new cable and noticed that the sheave is seized in the metal box on mine. Looks like the only way I can get it out is to dig it out of the big lump of glass it is mounted in. Anyone have any suggestions?
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Post by Peter on Mar 14, 2006 4:32:39 GMT -5
I just repaired whole system. It was always little wet around the first sheave housing so when I hauled it, I got chisel and got it out. The housing got flange about 4 x 8 inches; sheave pin is welded in. It was pretty corroded so I sand blasted it and encapsulate it in epoxy fiberglass. Built new base for it from fiberglass, not from putty and mounted it back. I also replaced brass 3/8”pipes with ½” stainless steel. Back in the water, no leaks so far. Good luck. Peter P 35 CAPER
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Post by Mike 39 on Mar 17, 2006 15:38:37 GMT -5
Thanks for the reply Peter. Nice to know what I'm up against! will probably wait and do this next haul-out!
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Post by culbrz on Jan 23, 2007 9:52:48 GMT -5
Can the sheave boxes be replaced with new ones? Or will I have to have them custom made? How will I replace the entire assembly?
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Post by Mike39 on Jan 23, 2008 1:06:55 GMT -5
I think you are looking at a custom job.
Frankly, I'm not wild about stainless because of the crevice corrosion issues in an airless environment. Might be better and (cheaper?) to machine out of bronze or even fiberglass.
something to think about...
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Post by gcastillo3 on May 19, 2011 12:46:32 GMT -5
I just bought a 1977 Pearson 35. We began by working on the Center Board. The cable conduits looked old and corroded due to electrolysis (ungrounded system built of marine copper and stainless steel). When the center board was released in port! the conduit broke in three parts. Water began to enter the boat. The cable was released from the top, pulled out by a person below the hulll, the copper pipe was sliced and a wooden plug was inserted. If this would had happened navigating without having the proper tools to cut the cable and conduit and marine epoxy the vessel would have sank.  Beware. It ws documented. Took the system to a machinist which is rebuilding the piece with new material. 100% stainless steel. The work is being done in the water. |
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Lance
New Member
Posts: 4 
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Post by Lance on Feb 14, 2014 12:26:49 GMT -5
I have a 1978 P35 which I purchased in 2006, my center cable parted shortly after, and I have been unable to work the new cable through, I believe a part of the cable has broken in the sheave assembly and the sheaves are frozen jammed with the rotted portion of cable. I have been reading various links and actions others have done, and I believe I will have to dig into fibre glass and dig out the assembly to be refurbished or replaced, what I need is some idea of where to start cutting/ chiseling, the FG, what the dimensions of the sheave assembly is W x D x B etc. If anyone has clear drawings of this process or better yet pictures, they would share with me.
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Post by fwpper on Mar 17, 2014 8:54:37 GMT -5
LAnce I have same issue. Did you do the job or find pics or drawings???Thanks
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Post by peterferguson99 on Apr 23, 2014 16:19:28 GMT -5
Does anyone have a diagram or schematic of the centerboard housing or know where to find one?
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Post by upotlexesie on Oct 15, 2019 19:56:12 GMT -5
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Beware. 