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1977 Hunter 33 Pedestal Backing Plate replacement

Discussion in 'The Cherubini Hunters' started by Douglas Ronne, Aug 29, 2017. Add this thread to a FAQ

  1. Douglas Ronne

    Douglas Ronne

    Joined Aug 29, 2017
    2 posts, 0 likes
    Hunter 33
    CA Baddeck, NS, Canada Sydney, NS
    I recently ran into some trouble at sea when one of the idler pulleys ripped out of the backing plate. Looking up some info seems to indicate that the pedestal is made by Merriman/ Yachting Systems and that they are defunct and you cannot get parts anymore. Further, it looks like the pulleys are pressed or held on one end by some kind of grommet so I don't think I can just manufacture a new plate.

    Has anyone dealt with this already? How did you?
     


  2. dLj

    dLj

    Joined Mar 23, 2017
    80 posts, 14 likes
    Hunter 30
    US Monroe, NY Snug Harbor, Lake Champlain
    Sorry, no experience with this pulley specifically, but if you post pictures of the pulley/plate might be able to give you some suggestions just from a general mechanical point of view...

    dj
     


  3. ggrizzard

    ggrizzard

    Joined May 27, 2004
    822 posts, 26 likes
    Hunter 1979 30 Cherubini
    US Ponce Inlet FL
    Yep. After 36 years the mild steel plate on my 1979 H30C gave up the ghost.
    I went to the local machine shop with the old one and they made a new one from stainless.
    They cut the holes necessary for the cables/wiring. They drilled through the rivets that held the sheaves onto the old plate, re-mounted them to the new plate with new rivets and now I'm good to go.
    I think finding new sheaves would be the hardest part of the process, not making a new plate.
    Hope you can get it done.
    G.
     


  4. Douglas Ronne

    Douglas Ronne

    Joined Aug 29, 2017
    2 posts, 0 likes
    Hunter 33
    CA Baddeck, NS, Canada Sydney, NS
    I think what I will try is to get a new plate made with the supports for the pulley included - all welded together - with holes in the right place for the wire to stick through. stainless 316 I think - 1/8" for the pulley supports and two thicknesses of 1/8" stainless for the plate since that is what I have available and as far as I can tell it is supposed to be 1/4" thick and I don't want to mess with the height at all.

    Here is the plate with the remaining pulley: one.jpg
    and here is the pulley that pulled out: two.jpg
     


  5. heritage

    heritage

    Joined Apr 22, 2011
    367 posts, 27 likes
    Hunter 27
    US Jacksonville
    You could try replacing the part with a salvaged Yachting Systems base plate. Monkeyfist: http://boatpartsferret.com/usedsailboatparts-com-monkey-fist-marine-in-green-cove-springs-fl/. usually has some YS pedestals on hand as well as complete Edson pedestals. I opted to convert my YS install to a used Edson unit last year. Actually, because my YS backing plate was in better shape than the Edson one, I adapted it to the upper Edson unit. I did have to drill 2 holes for the mounting bolts as the pattern was slightly different. Here is a pic of the Edson pedestal and the backings plate that I decided not to use.
     

    Attached Files:



  6. dLj

    dLj

    Joined Mar 23, 2017
    80 posts, 14 likes
    Hunter 30
    US Monroe, NY Snug Harbor, Lake Champlain
    Let see if I understand. You need to replace the plate at the top with that pulley shown in place, and the gaping hole in front of it where the other pulley pulled off. Correct?

    How hard is it to feed the wiring ( I think it's wiring) shown by my yellow arrow? Can you easily disconnect it, have a hole in the plate and pull it through it and reconnect? Is so you can just drill a hole for that. Be sure to bevel the edges. If not you may wish to cut a slot (bevel edges on that too).

    The pulleys themselves and their brackets look like stainless steel and appear to be in decent shape. If you can't find a replacement part (preferred method), might be easy enough to take out the existing plate, use it as a template to build another plate out of stainless. The pulleys come off the current brackets by removing the cotter pin and take out the pivot pin. Then you could drill two counter sunk holes in the pulley bracket and the pbase plate and attach pulley to new base plate.

    You could drill and tap the new stainless plate, put a counter sink on the top side of the plate, then when you put the screws to hold the brackets in, you can peen them over making sure they never come out. You could also rivet the brackets but I'm not sure where you'd get 316 stainless rivets... You can get 304 flush mount rivets from McMaster-Carr:

    https://www.mcmaster.com/#rivets/=1967gvl

    those could work. Might be cheaper to simply rivet if you have to buy taps....

    Just some thoughts...
    dj

    Pulley_Plate.jpg
     


  7. Turtle777

    Turtle777

    Joined Aug 19, 2017
    4 posts, 2 likes
    HUNTER 33 Cherubini
    Un San Francisco Bay San Francisco Bay
    The PO of my H33 replaced the pedestal backing plate with a beefed up version of the original. He took the original to a machine shop, explained what he wanted changed, and had a new one made. Not sure what was done to "beef it up", but he is a mechanical engineer so I trust it makes sense. I'll snap a couple photos next time I'm at the boat.
     



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