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Source for rudder bearings?
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I have been through this with my S2 27 which I no longer own.
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I don't believe original replacement bearings are available anywhere. But what I did was as good or perhaps better than the original (plastic? delrin? other?) bearings. McMaster Carr has bronze oiled bushings and pins that will drop in and perfectly replace the factory bearings. I once did a detailed write-up and sketch for this group but I can't seem to find it. I also no longer have the paper drawings/files here at home as I purged those files awhile back (I'm sailing a Cal 33 now). You will need 4 bronze bushings from McMaster-Carr. You want the kind with a shoulder flange on the end. Carefully measure the metal gudgeon parts on your boat. Going strictly from memory I think they are 3/4" OD. I used the longest bushings they had. The weight of the rudder assy should rect on the bushing flanges. Assembly is a little tricky because the rudder is heavy. Look at what MC has and hopefully you will see how these bushings can be used. They are drop-in, no machining required, and relatively inexpensive. They made my rudder assy into a tight, no slop at all, perfectly functioning system. Important for obvious reasons and perhaps critical if using an autopilot. Sorry I can't give more detail. But hopefully this is enough information so you can piece it together. Regards, -Doug Hoffman On Apr 6, 2019, at 9:38 PM, 'Dave S.' uswa174@... [s227classassociation] <s227classassociation@...> wrote: |
开云体育After some digging I found a sketch I made and the McMaster-Carr part numbers/drawings.I recall that it helped, when installing on the boat, to loosen the smallish through-bolts that hold the gudgeon brackets onto the rudder. I also spent some time with whitened epoxy to assure that the tiller bracket had no side-slop due to a loose fit on the rudder. Hope this stuff helps. I can tell you that it all worked great for me. -Doug 3 attachments
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Thanks so much Doug. This is really helpful information, and it sounds like a great, long-term solution. Much appreciated!
I hope you are enjoying your Cal 33.
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Dave S. s/v Clio 1987 S2 27, hull #80
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From: "Doug Hoffman dhoffman888@... [s227classassociation]" [s227classassociation@...] Date: 04/07/2019 12:58 AM To: s227classassociation@... Subject: Re: [s227classassociation] Source for rudder bearings? ?
I have been through this with my S2 27 which I no longer own.
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Glad it helps. My sketch is poor. The dotted lines through the rudder gudgeon are supposed to represent the exact same diameter as the MC bushings OD ( 7/8"). All four bushings should be the same length (1-1/4 "). I know this sounds like the bottom bushings would then be too long because most of the bushing hangs below the bracket. But this extra length gives you more rigidity in the system because it helps prevent any "rocking" of the pins in the bushings. And the extra length of the lower bushings and extra length of the ss rudder pins doesn't hurt anything. Make measurements on your boat to assure that the pins won't hit anything and the sizes are all correct for your boat. As I recall the lower pin comes close to the rudder but does not hit.
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The weight of the rudder is carried on the bottom flanges of the bushings, which is what you want. No wear of the steel gudgeons, only possible wear is on the replaceable flanged bushings. I don't know if "oiled" bushings are needed. Looks like I used plain bronze. Your choice. Again, the beauty of this installation is that everything is "drop in". No machining or cutting or drilling etc. And you can carry spare parts if you want for cheap, though I sailed two seasons on the Great Lakes and no perceptible slop developed. I used the standard Raymarine autopilot for tillers and the tight system enabled the autopilot to function perfectly. -Doug On Apr 8, 2019, at 8:11 AM, 'Dave S.' uswa174@... [s227classassociation] <s227classassociation@...> wrote: |
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Thanks, Doug, that's great information.? I am also glad to hear that your Raymarine autopilot had no issues with controlling the rudder after the installation.? I have an old Raymarine Autohelm ST 6000 that still works like a charm, so I'm glad to know that it's still likely to work well.
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Dave S. s/v Clio 1987 S2 27, hull #80
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? -----Original Message-----
From: "Doug Hoffman dhoffman888@... [s227classassociation]" [s227classassociation@...] Date: 04/08/2019 07:52 AM To: "Doug Hoffman dhoffman888@... [s227classassociation]" Subject: Re: [s227classassociation] Source for rudder bearings? ?
Glad it helps. My sketch is poor. The dotted lines through the rudder gudgeon are supposed to represent the exact same diameter as the MC bushings OD ( 7/8"). All four bushings should be the same length (1-1/4 "). I know this sounds like the bottom bushings would then be too long because most of the bushing hangs below the bracket. But this extra length gives you more rigidity in the system because it helps prevent any "rocking" of the pins in the bushings. And the extra length of the lower bushings and extra length of the ss rudder pins doesn't hurt anything. Make measurements on your boat to assure that the pins won't hit anything and the sizes are all correct for your boat. As I recall the lower pin comes close to the rudder but does not hit.
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