Sigma 41
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2 years ago I had the bottom stripped for gel coat blistering. At the time we noted blistering on the rudder and the yard manager decided to drop it. It was real easy to release it above the top bearing but even with the Travelift fully up he had to dig a hole to have enough clearance to remove it. Of course steering and autopilot arms have to be released. He decided to drill a bunch of holes in it to drain water accumulation in the foam then left it out in the rain to dry out. After it became waterlogged, he put it in a plastic hothouse with heat lamps to dry it out. The resulting splitting of the rudder gave us a chance to look at the internal structure. It was just a few stainless bars welded to the very strong stainless shaft and the metal appeared in good condition. The bottom part is metal free as usual for shearing in case of collision/grounding. The welding of the flat bars vertically to the shaft looked flimsy to me, I would have liked some small bilateral horizontal triangles for strenghtening of the weld to the shaft but I was assured it was strong enough. He then rebuilt the whole thing foam and all with layers of epoxy and glass, according to several previously measured battens for a pattern. It looked stronger than original after $5,000.00 out of my pocket and it held very well in a stormy St Pete to Isla Mujeres race with 40 knots across the Gulf of Mexico. You have to have faith. The upper bearing is a plain bronze cylinder with a grease groove, about 3 inches high bolted to a steel u channel fore and aft appoximately 3 feet long from the transom to a forward bulkhead. This was rusting badly so I had it rebuilt out of stainless for $800.00. It might be good to learn to live with rust. The lower bearing is similar but bolted to the hull with a stuffing box on top. All surfaces, shaft and bearings were in perfect condition without any play. They were always kept very well lubricated with a grease pump permanently installed with lines to both bearings, the type you squeeze the grease out with a screw with handle. I filled it with teflon paste from Lasdrop I believe, the king you get in film cases with teflon sticks at West Marine. I am getting verbose in my old age, sorry, good night and good luck. P.S. you can come down to sail with us any time. Francois, St Pete Beach, Florida.
I had the rudder out too some years ago. I took it out simply because I found, like Francois, that the supporting channel iron (mild steel) section was virtually rusted through from water ingress via the emergency steering hatch. We went the more economical route - galvanised instead of SS. Bearings etc all as Francois says. Fair winds David Intrigue, Ireland
For the record, my contact details are : e-mail: [Log in to view email] Adrian Biggs Lanhams, Lodge Lane, Peldon, Colchester Essex, CO5 7PZ United Kingdon Tel : +44 1206725521
Our construction: We have an old-fashion cord bearing bolted to the bottom of the boat with four bolts into laminated nuts. The second bearing is placed on a fairly large steel U-profile - about 80 cm higher. This U-profile is stuck between the stern and a partition just behind the aft cabine - parallel to stern-bow-line. It was not to difficult to get it off. I have taken everything apart. There was a little bit of friction in the upper bearing causing continuous shocks in big seas going downwind - with changing pressure on the rudder. After checking it the ware proved to be minimum - not worth replacing the bearing. After putting it all back to getter, the friction was no longer there. Probably because of turning the bearing 90 or 180 degrees. Also I added Sika in the construction of the lower bearing to stop minimum leakage around the bolts. Finally, we took out the U-profile to clean it and check the strength. Although it was quite rusty, it was in very good shape. It all looked like a very straight forward and solid construction. Hidde
I appreciate the explanations. Hidde
I have a Sgima 41 named "Sunbird of Wyre", located in Oslo, Norway. Regards Patrick
Can you let us know is she Fractional or Masthead and do you know the hull number (inscribed on top of transom) Thanks Roger
I note that you are in Spain, we were thinking of going in 2007 but have heard that costs and scarcity of berths are a real problem. Have you or any other member of the forum any comments or advice. Jim
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Just found this site after having bumped into Roger/Candida in Yarmouth last weekend. We (family syndicate) bought 'Tommy Big Eyes' in 2000, she is a fractional rig, 1984 vintage, kept in Hamble, UK. We are currently set up for cruising. From a quick review of posts we seem to have had similar range of issues including: - List to Starboard (i presume mainly due to battery bank), I have tried to solve by storing spare anchor, chain and other heavy items under the sterm cabin bunk - but with little effect. - Replaced the keel after a flange crack in 2004 due to grounding Has anyone recently commissioned a new mainsail? I would welcome any thoughts on best sail makers, material, cut, battening, cost etc., as we are looking to replace next year. Regards Sam
The 41s must be one of the easiest boats to sail. They sail so well we cruise a lot with just two up the wife and myself have not found a need for a strong crew yet. Regards Francis. "Hideaway"
Been a bit late, have the original rigging and chock book for Black Adder, very straight forward, insert aft wedge first, then winch the mast back to fit forward wedge. Wedges are to be oversized to stop any mast movement. Will scan and pdf it some time, anyone still need it? Best regards. Shawn.
Had a new mainsail built with a good dacron cloth. Cost £2,320. It is worth getting the better cloth, in the grand scheme of things the weave will be tighter and stretch less. Another Sigma got a sail from a loft in South Africa, am sure its in here somewhere. Cheers now! Shawn.
Shawn, My hull has the number 61, and is M/H. THe keel is 3 cm on starboard and the draft is near 2.20 m. My berth is at La Trinite/mer , France. How was the race Around the Island this year Roger ? If the weather is the same, next year , it will be great with the other S 41 and perhaps a drink at the Jolly Sailor, at the Swanwick Marina or at Lymington . Regards Jean-Pierre BAOBAB III
Thanks for replying,that sounds more promising,could you maybe email me at morven10@msn so i could get some names. Jim
RE: Mast Chocks. Some fractional rigged boats are tuned with the mast step as far aft as possible and the mast going through the partners as far forward as possible. A J-24 is done this way, I think. With our fractional rigged boats, do you think it makes any sense to use the largest possible aft chock to have the mast as far forward as poossible where is passes through the deck? Jean-Pierre -- Do mean that the keel is 3 cm off-center, or that the boat lists 3 cm to stbd? Thanks. Ted Keech FAYAWAY San Francisco
My keel is 3cm off-center. Your photo near the lighthouse in San Francisco Bay seems to be in the Golfe du Morbihan. Regards jean-Pierre Baobab 3
I have recently bought a Sigma 41.Thank you for the opportunity to communicate with other owners. The name of the boat is Miss Jersey and is currently lying in St Helier, Jersey. The boat needs a considerable amount of refurbishment to bring it back to it's full potential. Can anyone assist with advice? Particularly the contact of a boat yard who you feel could carry out a major refit of such a quality vessel. Alternatively, I would love to hear from anyone who feels they could have major advice and information for such a project? My name is Andre and my e-mail address is [Log in to view email] Regards Andre
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Edited by Hidde 23 May 2006, 3:43 PM
