I'm new to this community, but am enjoying and learning from these discussions. Here's the problem. At the slip in a 12-15 mph SW wind our mast is flopping around like a fish dying on the dock! Our heading at the slip is due south. My wife is not happy! I have played around with tension on the boom, main halyard, jib sheet, forestay, backstay tension, etc. I'm in big trouble with my lady. It shakes the V-berth like a tsunami! I know there is a solution! Help Me! It's a marital crisis! Refuge - 01 MKII Tall Rig, I forgot the hull numer.
Thanks! REFUGE
Mast Gyrations
Tue, 03/31/2009 - 18:30
#1
Mast Gyrations
I usually get up and say: "Oh, honey, the wind's 12-13." "How do you know," she says...
Don't sweat it, it happens.
See this: [url]http://www.c34.org/faq-pages/faq-mast-pumping.html[/url]
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
I have a tall rig and it does the same thing. I think that the vibration comes from the furler. Sometimes if I tighten the jib sheets it seems to help.
It's a little crazy. The 36 has a mast like a telephone pole. Nothing should make it vibrate.
If I had a tension guage and a little patience, I might try tightening up on the forward lowers, this will pull the center of the mast forward a little, and the top of the mast back, tensioning the forestay.
Just a thought.
Dave
Dave
Ballena 1995 Mk II #1445
Dave, did you read the link I referenced? Tension has nothing to do with it, unless the forestay is so loose any wind will make it whip around..
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
OK, whiles on the subject, what is the proper procedure to tension the forestay.
Randy Sherwood
Mutualfun 1990 # 1057
T/R W/K M35a
Home. Charlotte, Mi.
Boat. St Augustine,Fl.
Stu,
I guess I should have read the link you provided. Thanks for pointing it out. I am familiar with vortex shedding, (Having seen the Tacoma Narrows bridge film a few times. ) It just never occurred to me that it could be happening to the mast. It may have something to do with the C36 and C34 having a single spreader rig.
I will try the trick with the halyards. Or perhaps I will market an overpriced marine-grade widget to cure the problem.
Dave
Dave
Ballena 1995 Mk II #1445
You can always sllep in the Aft cabin.
LOL Good luck!!!!!!!:)
FAIR WINDS & FOLLOWING SEAS
Jeff Costa
S/V KAIROS Hull #0235