Cruising Sailors Forum Archive

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• Chainplate screwup.
  • what kind of bolts are you looking for?
    • So does McMaster-Carr
  • well, how about this?
    • Now there's an idea!
  • Isn't there a backing plate, Dan?
  • I seem to recall warnings about undersized clevis pins
    • The issue with the chainplate is not just the shear strenght of the bolts, Charlie
      • Bolt sizing
        • The induced friction from compressing the chain plate against RFP would help -- but ultimately, I'm not how much
          • You do NOT want to torque bolts too hard in FRP. You can crush the fiberglass structure and weaken the area.
          • structural joints
            • Neil -- the right stuff that stays flexible to keep water out without being brittle really wouldn't transfer stresses.
    • Further, Charlie
      • Split pin shouldn't take load?
        • Yes, I miswrote and my comment was about a spilt pin.
  • Dan, do you have the old bolts with you?
  • Update, photos and some info. after responses.
    • Just called Jamestown,,,, NADA!
      • How about looking for a metric equivalent? 9/16 =14.2875 mm. 14mm closer than half?
        • Found them at Mc. Master-Carr
      • McMaster
        • I was so excited they had them I forgot to ask.
          • I would think 316 is better,
            • I"ve never had a problem on boats with 18-8, however.
        • I didn't see John H's post below...
  • At the very least, put a light load on the chain plate...
    • Very light! ;^)