Brad and Michael, A fairly good explanation of Mast Pumping and a possible solution can be seen on the Catalina 34 Assn. Archive page.. See: http://www.c34.org/faq-pages/faq-mast-pumping.html
FWIW, I've tried doing the "halyard wrap" .. It worked. Uniform Whisky, Ralph Ahseln "Oblio" Gresham OR ----- Original Message ----- From: michael mcvey To: [email protected] Sent: Monday, July 07, 2008 12:02 AM Subject: RE: catalina27-talk: Re: Quick Question on Shroud Hook-up Locations I have not figured what causes the vibration but mine had it too I tried different tensions on the shrouds but this did not stop the vibration if you figure it out let me know. ------------------------------------------------------------------------------ From: [EMAIL PROTECTED] To: [email protected] Subject: Re: catalina27-talk: Re: Quick Question on Shroud Hook-up Locations Date: Sun, 6 Jul 2008 10:41:57 -0700 Harvey, I was going to ask a question which you may have touched on in your second paragraph. Mast pumping. When I'm sitting on my boat at the dock while just a moderate breeze blows, the boat occassionally vibrates from the rigging. I was wondering if this is normal and if the rigging might be too tight or loose or out of adjustment. The standing rigging seems tight, all shrouds and stays, and the mast stands straight if not for a slight forward tilt (not noticable unless you hang a plumb bob). I've gazed at the rigging while this vibration is happening on several occassions and noticed, I think, the mast vibrating fore and aft around the spreaders which leads me to believe the lowers are loose, but they are tight like a violin string. Is this what you mean by mast pumping? Brad Get instant answers with Windows Live Messenger. IM on your terms.
