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Sigma 41
23 October 2004, 6:33 AM
ALPHAIV
Joined 11 Apr 2004
10 posts

Hi Shaun

How bad is your teak deck? one solution which I have used on a fibreglass deck which had separated from the balsa core was to inject epoxy into the void, this was recommended by the surveyor and worked well.

With regards to the hatch, I removed the Perspex by cutting the sealant with a Stanley knife (be careful of the seal, then clean off the remainder of the sealant from the frame using white spirit. I used the same size polycarbonate as the Perspex. The polycarbonate was also clear which lightened the yachts interior. If you require further info you can contact me on [Log in to view email]

Regards

Wayne & Sue

Sigma 41
23 November 2004, 9:54 PM
EVERGREEN
Joined 23 Nov 2004
4 posts

Hi Roger,
we just found this forum. Do you remember us. We are the couple that owns the S41 "Evergreen" and met at the ARC 2003.
It's good to read that you had a good trip back to UK.
This summer we spent a lot of time with our EVERGREEN at the west coast of sweden and enjoyed sailing in swedens skaregard.

Armin + Nicole

Sigma 41
9 December 2004, 5:30 AM
Ted
Joined 19 Jul 2004
69 posts

We have just found a solution to the problem of heating the boat. We sail in San Francisco, where the water temperature is about 55-58 degrees F (12-15 degrees C) all year round, and the air temperature rarely goes below 50F or 10C. But summer or winter, it's pretty chilly in the cabin in the evenings and early mornings. The other day we found a Coleman Procat propane catalytic heater that can be run in the cabin without any exhaust pipe so long as there is a source of some fresh air. The thing produces water & CO2, but no carbon monoxide, at least so long as the oxygen in the cabin air doesn't get depleted. I wouldn't let run while we are asleep, but for heating the cabin first thing in the morning it looks great. It cost less than US$70. It uses one 16-ounce canister of propane in 6-8 hours and 2 D batteries in 16 hours. It puts out about 3000 btu. The propane costs about US $2.50 a can. This wouldn't be much of a solution in Alaska, but I think it's going to work fine here.

Sigma 41
9 December 2004, 9:13 AM
Candida
Joined 2 May 2004
54 posts

Hi
Had not logged in for a week or two - - Yes of course I remember
- good to hear from you - wish you compliments of the season and good cruising in 2005!

Roger

Sigma 41
4 January 2005, 10:26 PM
Ted
Joined 19 Jul 2004
69 posts

My 1983 Sigma came with a Whitlock rod-link steering system, which I think was standard equipment. Has anyone used a rotary-drive autopilot with such a system. Is it an option in such a system? How well does it work offshore, and what brands have people tried?

Ted Keech
FAYAWAY -- San Francisco


Sigma 41
5 January 2005, 9:18 AM
Drewp
Joined 5 Jan 2005
2 posts

Hi all fellow Sigma sailors. Have just found this forum and sounds great. I have "Stormalong" that was originally raced by RORC as Griffin, have been sailing on fer for about 12 years but just now purchased. The problem since new has been that she is a "wet" boat". I have never been able to stop water ingress, don't know where is comes from, have tried all the obvious, anyone else had this? I am based in Hamble and race both in Solent and across Channel, for anyone thinking about buying one, having spent some years doing Fastnet and taking novice sailors on charter this has got to be the safest, exhilerating and best boat ever made.

Sigma 41
5 January 2005, 5:57 PM
Ron
Joined 29 Sep 2004
6 posts

Hi, I've owned Graphix for over sixteen years and fitted Autohelm 7000 in 1995. Since then she has completed 6 trans-Atlantic crossings and we got home last year after a two year "clockwise around the Caribbean" experience. Our autohelm steered us pretty much most of the time and the linear drive had no breakdowns. The only problem we had was with the board in the core pack which was changed in Trinidad in 2002. The boat performed in excellent style with only myself and my wife on board.

We are selling to buy bigger but I wonder at the logic.

Good luck with your deliberations, Ron Winn

Sigma 41
5 January 2005, 7:22 PM
ALPHAIV
Joined 11 Apr 2004
10 posts

Hi Drewp

I had the same problem, eventually after resealing all the deck fittings and granny bars tracked the last leak to the cableways down the mast.

Regards
Wayne & Sue
AlphaIV
[Log in to view email]

Sigma 41
5 January 2005, 7:27 PM
Ted
Joined 19 Jul 2004
69 posts

We have owned ours for about 4 years and have been conducting a dry-boat-is-a-happy-boat campaign. So far we have found:

1. Two of the toe-rail bolts had lost their nuts and were loose. Removed, filled, drilled out and replaced with lag screws;

2. The sink in the forward head lets in a lot of water on the starboard tack in a seaway unless the thru-hull valve under the bowl is closed.

3. The chainplates are leaking -- today's problem. I think the shrouds need to be released and the turnbuclkes (do you call them bottlescrews?) off to get the decorative cover plates off and recaulk.

4. We had an exhaust water leak. I don't know whether the arrangement was original, but the engine anti-siphon hose led all the way aft to the exhaust thru-hull, where it was supposed to be attached to a nipple that had been installed in the thru-hull and soldered or brazed. In the hot, salty exhaust water, it had failed. (It was a crazy system to begin with for any number of reasons.) If the water that accumulates is aft the dam which is just forward of the engine and if it is warm after the engine has been running, scrunch back to the thru hull and take a look.

5. We had a loose hose clamp on a thru-hull just aft of the forward head. At first I thought it was a water-tank leak because there was enough fresh water coming in down the mast and thru the chainplate leak that it didn't taste very salty.

6. The limber holes don't drain the water back to bilge pump sumps very well. We use a wet-dry vacuum to bail the boat every once in a while and use the long extension wand to get out to the sides and under the furniture. Ours lists slightly to starboard and we have to chase the water that runs to that side.

7. The seal in the forward hatch dried out and failed when we were well off shore in some windy, bouncy conditions. Every third wave drove about a pint of water onto our bunk. You can get new ones from Lewmar via West Marine in the U.S., but you have to search the Lewmar website to get the part number because the hatches are so old.

8. Our anchor locker drained some water into the bilge. The rode had been led back through the forward bulkhead under the forward berth. Some water came off the rode itself and some came down the hawse hole (not a lot, but some). That was a nasty arrangement for many reasons, and we redid the whole anchor handling system. It puts the weight farther forward, but it keeps the boat drier and less smelly. Let me know if you want the gory details and pictures of what we did to it.

Good luck.

Ted Keech
FAYAWAY -- San Francisco


Sigma 41
5 January 2005, 7:43 PM
Black Adder
Joined 16 Oct 2004
39 posts

Hi Wayne and Sue,

Been out of the picture, sorry, will email through usual channel.

Everybody:

For all on this site, I have bought web domain Sigma41.com and will host this for free, can anyone come up with a) suggestions for the site and b) membership, am new at this and would like to give Sigma 41's and thier owners a site for recommendations etc. etc. and history of boats, modifications etc.

Happy New Year to all and safe sailing!

Shawn.

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Sigma 41
5 January 2005, 11:49 PM
Candida
Joined 2 May 2004
54 posts

Shawn
Thats great news - I maybe contact with some sailing mags might turn up a review?
Also wonder if Janet Grosvenor at RORC might have some paperwork still?

Only historical thing I have is a 1984 price list!!!

Do you think there would be interest in a meet somewhere on the S Coast this summer?

Sigma 41
6 January 2005, 7:38 PM
LUIS
Joined 6 Jan 2005
2 posts

I HAVE JUST DISCOVERED THIS SITE, JUST SOLD MY 1985 SIGMA 41 , AFTER SALING IT FOR 11 YEARS FROM FORT LAUDERDALE TO PATAGONIA , INCLUDING ROBINSON CRUSOE ISLAND .
HER HOMEPORT HAS BEEN VALPARAISO- CHILE , HAS BEEN ALWAYS A BULLETPROOF SAILBOAT AGAINST 45 K WINDS ,TIDE AND WAVES IN THIS COLD HUMBOLT CURRENT PART OF THE PACIFIC OCEAN , ALWAYS HAS TAKEN CARE OF MY FAMILY AND MY SELF NO MATTER WHAT ,I WILL REALLY MISS HER.

GREAT BOAT GREAT SOUND SAILING IN TOUGH SEAS.

Sigma 41
7 January 2005, 4:59 AM
Ted
Joined 19 Jul 2004
69 posts

I think that there may still be some records and information at Plymouth Boat Yard. I have talked to Moody people at boat shows and corresponded with the factory looking for parts, and they at least remember that they made these boats.

Ted Keech
FAYAWAY -- San Francisco


Sigma 41
8 January 2005, 9:50 PM
Candida
Joined 2 May 2004
54 posts

Hi
Wonder if anyone has had experience of removing the engine (Bukh) ?
We have to get ours out - seems to have blown something internally which is pressurising the sump - hence oil in bilge not in sump!!
Have disconnected all the usual wires and pipes and have removed the bottom step of the companionway - anyone know if we have to remove the upper steps as well? (really hope not as it looks a horrible job)
Also if the engined is damaged beyond repair (a possibility) has anyone changed to another make with success?

Thanks - think of me with oil to my armpits

Roger
PS intending to remove with gearbox attached

Sigma 41
9 January 2005, 9:12 AM
Ron
Joined 29 Sep 2004
6 posts

Hi,

I have had the engine out of Graphix and it is not a problem. The job is easier if you remove everything - side pieces as well. The teak plugs will require careful removal, water heater removal, saloon light switch wiring to remove and there is a bolt behind your rear cabin mirror which needs removing. The benefits are easier engine lifting from above, all teak can be removed for better varnish strip and replacement and the bilge can be ground and re-gelcoated while the engine is lifted clear. I removed the table and floorboards and put temporary ones down then lifted the engine into the saloon where I stripped and rebuilt. Whilst the engine is clean a spray can of red paint finished the job.

Good Luck,

Ron Winn (Graphix)


Sigma 41
9 January 2005, 1:00 PM
Candida
Joined 2 May 2004
54 posts

Thanks
Well we are 1/2 way there!
Thanks for the tips - will keep you posted

Roger

Sigma 41
9 January 2005, 5:39 PM
Ted
Joined 19 Jul 2004
69 posts

Roger --

We replaced our Bukh in early 2002. I didn't see them remove the engine, but I don't think they brought the gearbox out with the engine. We cut away the bottom steps, and I am not aware of any other deconstruction. (We had removed the water heater long before at the insistence of our insurance company.) I do know that the chainfall hit the KVH compass display that was mounted on the aft surface of the main companionway hatch and destroyed it

You can still buy the very same Bukh engine, and that is, overall, the cheapest way to go. We replaced ours with a Yanmar 3JH3. It's a wonderful engine: small, significantly quieter, much easier to service, easier to maintain in the long run because it is fresh water cooled, and more fuel efficient because it runs hotter, and that extra heat heats our hot water. It was, however, damned expensive to install, because we needed new stringers, wiring, instrument panel and engine controls. We did not replace the propeller. It's a little large; we only get about 2500 rpm, instead of 3200, but it's not so large that we get any black smoke, and I am told that as long as there is no black smoke, we will get better fuel economy. It drives the boat at hull speed at 2500 rpm.

Yanmar sells a gearbox with a slight down angle, and we had that installed also.

As long as the oil doesn't get to far above your arm pits, you should be fine. Good luck.

Ted Keech
FAYAWAY -- San Francisco

Sigma 41
9 January 2005, 6:18 PM
ALPHAIV
Joined 11 Apr 2004
10 posts

Hi Ted

I agree with you a dry boat is a happy boat.

Something to note when resealing your chain plates. I found that the gap between the chain plates and the deck to be small, less then 2 mm so if you had a 1mm movement that equates to a 50% flex in the sealant, most sealants don’t have that flexibility. We increased to gap before resealing, we also resealed when the rig was under tension.

Hope this helps

Regards

Wayne & Sue

Yacht AlphaIV
[Log in to view email]

Sigma 41
11 January 2005, 9:47 AM
Drewp
Joined 5 Jan 2005
2 posts

We had to change our Bukh engine last year. Tried to find something else that fitted but ended up with more of the same as we couldn't find an alternative without major alterations. The only thing that was aproblem was the engine mountings. The new engines do not have slotted holes and we could not align the prop properly. so all had to be replace to be slotted, maybe worthwhile considering doing this before you install, suggest also replace stern gland whilst out. We didnt have to remove the top steps, but took out the floor and then took out the engine and gearbox complete with a crane hoist down thro the companionway to lift away in one. No real problems encountered and is good opportunity to replace sound insulation. Good Luck

Sigma 41
11 February 2005, 5:30 AM
Ted
Joined 19 Jul 2004
69 posts

I have two questions about the mast. The mast is out of the boat, and when inspecting the step, I noticed that the part of the step that actually sticks up inside the mast is coated with a brittle material like oiled paper that is deteriorating and coming off in sheets. Does anyone know what it is and what a proper replacement for it is? Is it anodyzing coming off the step? I am thinking of using Lanocoat, but I am concerned that it might not take up enough space and the mast might grind around the step.

Does anyone know anything about the tube for the electrical cables in the mast? Where are the ends of it. How big around is it? Has anyone ever taken it out and been able to replace it? If so, did you have to drill new holes in the tube for the rivets?

Ted Keech
FAYAWAY
San Francisco

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