I had the same problem with our 29. I never got rid of the noise until I pulled the mast and retuned the whole rig...never heard it again. I have tried velcro wraps on the shrouds and that used to work to some extent but no longer. I'll try the fender up the mast and the halyard wrap ideas and see if they make a difference.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 1 August 2015 at 12:35, David Blair via CnC-List <cnc-list@cnc-list.com> wrote: > Jim I had this happen recently. Mast was in and out last fall for repairs. > I just put it down to Brent Jacoby really “tuning” the rig – certain wind > speed and angle gives a nice steady hum (maybe C sharp). Noticed it again > yesterday in a light breeze at the Club for a short while. When it bugged > us before I just threw the gennaker halyard around the rig and tightened it > down a little – dampened the hum right out. Alternatively one could just > hum along, I suppose. Sorry to be missing the RDV this year – family > wedding. Ciao > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Jim > Watts via CnC-List > *Sent:* Friday, July 31, 2015 7:27 PM > *To:* 1 CnC List > *Cc:* Jim Watts > *Subject:* Stus-List Howling rigging > > > > On our latest trip north, we anchored in Clam Bay and had a strange > problem. At a certain wind speed, the shrouds would start to hum, sometimes > making the boat shake with vibration. The major vibration was felt in the > small rod running to the underside of the upper spreaders and in the mast > and backstay. I backed each shroud one off half a turn and it really > didn't do much except make those shrouds look loose to me, but I'm sure I > can't tell the difference of 1/128th of an inch. It eventually faded as the > wind dropped. > > For the next ten days, in all sorts of conditions, we didn't hear it, but > when we anchored in the same bay 10 days later, we got it again. > > Any explanation except witchcraft? > > > Jim Watts > Paradigm Shift > C&C 35 Mk III > Victoria, BC > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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