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Folding boom?

Printed From: Yachts and Yachting Online
Category: General
Forum Name: Repair & maintenance
Forum Discription: Questions & tips on the subject
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=13320
Printed Date: 19 Sep 19 at 5:04pm
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: Folding boom?
Posted By: fasteddy
Subject: Folding boom?
Date Posted: 09 May 19 at 9:46am
Hi all..

Am very new to sailing, bought a fibre glass 12 foot dinghy with a single sail for myself and my son. We live in north Scotland so have many large and small lochs, plus the coastal waters around the highlands to play in..

We have had one very fun afternoon in Loch Shin which was also our first time sailing.. Loved it..

Pic shows the boom not set into the sail as it should be, will be correcting that by moving the clasp on the mast further up so the boom can slide into the sail.



Now we are looking at getting our boat a bit more ready for the summer.
First thing that we see as a bit of a problem is that the sail cannot be reefed. It slides directly onto the mast and then slides onto a boom (mast and boom are aluminium tube). We also have an electric transom motor to help maneuvering in and out of launch points, but we cant use this as we cant stop the sail from propelling us at any point.
As the sail cannot be reefed, I was wandering if a form of hinge could be fitted where the boom connects to the mast, and then a line running from the top of the mast could be used to pull up the boom, thereby putting the sail out of action until the boom is lowered again.

Apologies if this is all old hat for all you experienced folk out there, we are trying to read as much as possible and talk to other sailing folk, but I am finding very little info on modding a small craft and so have joined this forum in search of wiser minds..

I am an engineer so have no hesitation in having a go at anything..
Any ideas or suggestions?



Replies:
Posted By: MerlinMags
Date Posted: 09 May 19 at 10:00am
A rope running from the end of the boom to the top of the mast is called a "topping lift" and it does indeed put the sail (mostly) out of action, as you suggest. This is not suitable in strong winds though, as the sail will still cause a lot of drag, and erratic rolling of the boat.

You probably don't need to add a hinge to the mast-to-boom connection (called a 'gooseneck') as this surely already pivots up and down?

Don't worry too much about the sail not touching the boom. As long as the boom is long enough for the sail to be pulled tight, this is fine to see a gap in the middle. You want that rope very tight in strong winds to keep the sail flatter.


Posted By: Eisvogel
Date Posted: 09 May 19 at 10:27am
Can you not reef the sail by winding it around the mast?

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Enterprise 20361 (Eisvogel), Laser 102727 (Halcyon), Laser 121986


Posted By: MerlinMags
Date Posted: 09 May 19 at 10:29am
Three ways to reef:
1. Buy a smaller sail to use instead
2. Roll sail around boom (need 2 eyelets put into the sail)
3. Tie ropes at intervals to bunch the sail up (needs 5 eyelets)

Fitting eyelets to a sail can be done in a DIY way, but I would be a bit wary. They have to be damn tough to cope with the pull from ropes and wind.

(Rolling around the mast works with SOME sails, IF you have a way to stop it unrolling!)


Posted By: mozzy
Date Posted: 09 May 19 at 10:30am
Looks like if you leave the boom out of the sleave you could reef by wrapping the sail around the mast (depending on how far you can wrap until you get to the battens). This is what Toppers do.

It's also good because it's very easy to do on the water, let the outhaul loose, take the boom off the, twist the mast which wraps the sail, put the boom back on the gooseneck and off you go. 

[TUBE]https://youtu.be/9vE6KnsXTWs[/TUBE]


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https://www.youtube.com/user/656mozzy/" rel="nofollow - YouTube Channel
RS800 1144


Posted By: fasteddy
Date Posted: 09 May 19 at 10:30am
Ah.. wisdom and knowledge.. I am in the right place..

Thank you..! Am just about to pop out and move the gooseneck a bit further up the mast, the boom should then slide onto the sail as it was designed to..

As for a 'topping lift', sounds just the job for us, we also want to go out and do some fishing, cant see that as being possible if we cant pull in the sail.. I hear you regarding high winds, but I doubt we will want to go out in anything other than a gentle breeze until we get the hang of all of this..
As the sail slides onto the mast, think I am going to have to come up with something that fits over the top of the sail (split ring?) and take a line from there to the end of the boom..

Will take a couple of pics of our progress as we sort this one, maybe it will help another noob..

Thanks again..!


Posted By: fasteddy
Date Posted: 09 May 19 at 10:49am
Some great ideas..!
Will first have a look at rolling the sail around the mast as that should not involve any mods or new parts, although in the video above (thanks mozzy) the guy leaves a lot of sail out and this would not stop our boat from catching the wind.
I will have a play around in an hour or two and see what can be done with what we have..
Just had a quick check and you are right MerlinMags, the gooseneck does indeed hinge, although not sure how far until I get it all out this afternoon.
The idea of a topping lift is quite appealing at this point as it would pull the boom out of the way and give us more space to move around on our wobbly sea-legs.. Big smile


Posted By: mozzy
Date Posted: 09 May 19 at 11:35am
Oh, sorry, you are looking to get rid of the sail whilst anchored up? 

Quite a lot of people reef just to reduce sail area for sailing in more wind, which is what the topper video is talking about. 

You can of course keep on wrapping your sail until it is completely 'furled' around the mast. When sailing toppers we'd do this over lunch, or even over night ashore and when being towed on the water.  



 


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https://www.youtube.com/user/656mozzy/" rel="nofollow - YouTube Channel
RS800 1144


Posted By: fasteddy
Date Posted: 09 May 19 at 12:51pm
Thanks mozzy.. exactly what we are after.. Unfortunately, our wonderfully unpredictable weather here in the highlands means it is raining and hailing at the moment. As soon as we get a dry spell we will get out and try that out..
Nice pic, thats a lot of wrapped sails..


Posted By: Sam.Spoons
Date Posted: 09 May 19 at 2:44pm
The sail has a sleeve for the boom right? Unusual, most sleeve luff sails are loose footed as you have your's rigged now. I'd leave it as is personally, having the boom in the sleeve will make reefing much more difficult, and impossible on the water. And I wouldn't move the gooseneck to avoid extra holes in the mast if possible. What I would add though is a clew strap, a loop of rope or webbing round the back end of the boom and through the sail to keep it close to the boom. That'll make the sail work a little better and, as a bonus, increase headroom by a couple of inches.

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Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"


Posted By: Eisvogel
Date Posted: 09 May 19 at 3:15pm
Yes to clew strap -- have a look at the way the Laser is rigged; like the Topper it is a tube around the mast, but with a loose foot.



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Enterprise 20361 (Eisvogel), Laser 102727 (Halcyon), Laser 121986


Posted By: fasteddy
Date Posted: 09 May 19 at 4:57pm
Got a bit windy here but still managed to get it rigged and tried a couple of things.
Furling the sail is a no-no with this setup as the sail has 'rigid' parts in it that do not wrap around the mast, was only able to wrap it twice around before we encountered the stiffer bits..

The boom will hinge up, but only to a point where there is a 95cm gap at the top between boom and mast. Any more will stress the gooseneck pin and possibly break it off.. Can imagine that even in a light wind the boat would rock a lot if the boom is lifted like that..

Soooo... Back to square one.. Starting to think that a different sail may be the answer with a halyard to raise and lower it. Keep throwing the suggestions at me please, feel I am on the vertical part of the learning curve with all this..

Tried to search for a clew strap, they seem to vary between a velcro strap and an elaborate stainless piece of kit, so still not sure what it is..



Posted By: Eisvogel
Date Posted: 10 May 19 at 8:33am
Originally posted by fasteddy

Tried to search for a clew strap, they seem to vary between a velcro strap and an elaborate stainless piece of kit, so still not sure what it is..

Go for the velcro one, no need to spend a lot of money on it.


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Enterprise 20361 (Eisvogel), Laser 102727 (Halcyon), Laser 121986


Posted By: Sam.Spoons
Date Posted: 10 May 19 at 9:58am
Or just use a bit of rope Thumbs Up 

WRT furling, you could simply take the battens out (they will almost certainly be removable) and while the sail will not look as nice or work as efficiently it will still work well enough while you are learning to sail the boat.  


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Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"


Posted By: fasteddy
Date Posted: 11 May 19 at 9:44pm
Thank you all so much..!!
Finally got it all sorted.. Took the battens out (doffing my cap to Sam Spoons) and they may well have fallen out on their own soon enough as the stitching that held them in was on its way out..

With the battens out (2 of them, 60cm long, looks like ally coated in fibre glass?) the sail wrapped around the mast a treat. Fully furled the sail is tight to the mast with the bonus of being able to shorten the sail if the wind gets a little brisk, not exactly the Bahamas here..

Very grateful to all that pitched in to help us with this one, we feel much safer and more in control now. Going to take her out for a spin in the morning in the Dornoch Firth, stunning scenery, dolphins and ospreys, fishing for our supper and enjoying our new past-time..! 
Oh, and will take your advice and add a clew strap..

Clap



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