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Thread: Rudder Shaft Cap

  1. #1
    Squid! David Grimm's Avatar
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    Rudder Shaft Cap

    I get a slight klunk when under extreme throttle or heavy seas from the rudder. I removed the cap on the floor in the cockpit and the rudder tube is off center. It appears to be greased and there's not too much play in it. Should I be overly concerned?

    Thanks guys, DaveClick image for larger version. 

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    1986 Ericson 38-200 #206
    Knot Normal
    Universal 5432

  2. #2
    Moderator Christian Williams's Avatar
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    Those four philips machine screws in the picture secure the upper rudder bearing to the deck of the cockpit.

    My guess is that they're loose.

    There are nuts below. Tighten them up. It will stop the rudder post from slamming around.

    This can be observed while maneuvering if the cover plate is left off.
    Thelonious II, E381 hull 513 (1984) Universal 5432
    Table of Contents for Thelonious Blog here
    Videos: http://www.youtube.com/c/ChristianWilliamsYachting

  3. #3
    Squid! David Grimm's Avatar
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    Wow. Thanks Christian. I had read that on other posts you have commented on but I thought you were speaking of the 4 larger phillips head screws. Now I get the picture.
    I'll check them before I depart Thursday for my solo trip to the Long Island Sound! The last go for the season.
    1986 Ericson 38-200 #206
    Knot Normal
    Universal 5432

  4. #4
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    Interesting that the rudder tube is off-center from the access plate. My boat is like that also. But I've seen pics where the post is centered so thought mine was broken. The hole for my plate seems to be fwd of the center point between the four larger bolts that hold the mechanism in place. If those four smaller philips head bolts are holding the top of the rudder post bearing then wouldn't the rudder post be centered there? I suppose I'll find out when I replace the pedestal and redo the rudder post this off season.

  5. #5
    Squid! David Grimm's Avatar
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    Ahoy Sailors. The weather took a sharp turn up here in the northeast! Went from 90 to 50 in a blink. Oh well. Here is what I came up with on the rudder bearings. On "Knot Normal" she has a huge brass bearing retaining plate that bolts to the underside of the cockpit. The top cap that is slightly off center has 4 machine screew threaded into the bottom plate. There are two grease fittings and a plastic spacer on the shaft. I loaded both zerks up with grease. While moving her from the outside wall of the marina into my nice new well protected slip i didn't notice any more rudder clunk. We'll see how it feels this sunday!
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    1986 Ericson 38-200 #206
    Knot Normal
    Universal 5432

  6. #6
    Moderator Christian Williams's Avatar
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    Pictures are always good.

    That's a very different setup from the 381.

    Good greasing. Grease is god.
    Thelonious II, E381 hull 513 (1984) Universal 5432
    Table of Contents for Thelonious Blog here
    Videos: http://www.youtube.com/c/ChristianWilliamsYachting

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