Posted by Jerome Weinraub (zayde@…>)
Again,Freedom warns against any non-resilient material bearing against the mast,as it can cause excess pressure(hard spots) in local areas ,precipitating failure. Hence the use of polyurethane at the partners and the mast step. I purchased 4x4" poly bar,70 durometeron the net,cut it into wedges, and have had no problems in 5 yrs of use
----- Original Message -----
From: Alan Kusinitz
To: freedomyachts2003@yahoogroups.com
Sent: Saturday, December 03, 2005 7:50 PM
Subject: Re: [freedomyachts2003] F30 Mast step clanking
Thanks very much for the detail. The previous owner of mine had made an oak insert like you indicate you did in aluminum. I was surfing downwind at 8-9.5 knots one day which I think got the better of the oak. I noticed some abrasion at the deck collar and pulled the masts for the winter. The mizzen was fine but their was abrasion at the deck collar of the main but just superficial. At the base of the main the oak was shot and the holes in the mast were abraded with slight abrasion at the bottom of the mast but clearly something to worry about.
I glassed thick layers inside the mast where the bolts go through and filled the existing holes. I also spartited at the deck level.
Unfortunately the yard when stepping the mast and redrilling the holes decided to tap them rather then make the part of the bolt that goes into the mast just smooth. I pulled the masts to check them at the end of the season and their okay but I can see some slight abrasion so I’m on to my next try. An aluminum ring sounds like a great idea and since it will be in contact with glass not carbon shouldn’t have an electrolysis issue.
Thanks again.
----- Original Message -----
From: Frank Minelli
To: freedomyachts2003@yahoogroups.com
Sent: Saturday, December 03, 2005 1:18 PM
Subject: Re: [freedomyachts2003] F30 Mast step clanking
WE had the same problem on our F33, about ten years ago. Before getting to deal with the problem, I ran the boat (unintentionally!!) up on the beack in six foot surf, where she bounced around for a few hours. Hauling her out the next day showed no visible damage. However, the boat had gone through quite a few almost 180 degree rolls and wild bounces on that beach, and although at that time we had not heard the clanking, because of the general racket going on, I am sure the mast clanked plenty.
The next day we hauled her out (having pulled her off on a rising tide) and found no visible damage. However, a couple of weeks later the main mast went overboard, in little wind, breaking at deck level. The stump, when we pulled it, showed what had happened: The bottom of the mast had been destroyed , (when we bounced on that beach) the area where the holes had been made for the set bolts was completely gone, the rest was jagged, and frayed. The mast had lost all support from the collar.
Anticipating the same might be happening to the mizzen, I pulled it and found no damage as yet. As a preventative, I had a 2 inch aluminum disc machined to precise dimensions, drilled and tapped for the set bolts, and then inserted the disc into the bottom of the mast. That was some ten years ago, and the mizzen stands…
(the main was replaced with an aluminum stick. Why did they bother with that
temperamental carbon stuff anyway??)
PS I might add here, I was shocked to find the layup of that broken stick to be a maximum of three sixteenths, and a minimum of one eight, with the variation occurring in the same horizontal plane. That leves little margin for safety.
fargo_r <fargo_r@...> wrote:
Just completed a wild ride down the Chesapeake Bay from Annapolis to Norfolk in 25 kn. gusting 30 out of the north. Surfing at 7 to 8 knots running under double reefed main…BUT at the end of the 120 mile ride the mast was snapping back and forth on its step. At the end of each 1/16 to 1/8 in. lateral stroke the mast gives a good solid clunk. Very disturbing in the middle of the night. I think that the mast has not been unstepped in many years. Have heard that they are hard to lift. But I don’t want to go out in the ocean again or push the boat under sail until this is fixed. Any advice from this wise group of Freedom owners??? FargoF30#12 NARISA
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