What if in-mast main furler jams?

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Deac

I took the jump and bought my 356 with in-mast main furling despite my fear of Murphy's Law that someday in a freshening strong wind as I'm trying to reef it that it will JAM on me. It's not like you can drop the halyard when it's partially deployed. Does anyone have any emergency suggestions as to what to do if the mast furler would indeed ever jam? All I can think of is just to cut it down as far as I can reach and hope the wind tears it off the rest of the way...but I still don't sleep well at night with that scenario. Has anyone ever had it jam? Thanks.
 
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David Foster

Alternate mainsail track

If you were ocean crossing, the recommendation from a book I read is to mount a traditional track for sail slugs to the side of the furling slot, and carry a smaller main (sized for 1 reef) that you could hoist after salvaging the roller furling main. Otherwise, I'm waiting for others who may have experience to answer. Failures of this rig are not a frequent subject here. For the coastal sailing most of us do, salvaging the main, and then getting to shelter with the foresail and engine are probably a practical solution. David Lady Lillie David
 
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Les Blackwell

Strong winds not a problem

I have a 1999 Hunter 380 with Selden roller reefing for the main. I'm still learning how to optimally use the sail but jamming is not one of the problems I have encountered. If you mast has been properly tuned and is straight (there should be less curve to this type of mast than the tradition type for standard sails) and you have hauled the main up tight (and I believe this to be the operative word here) then the main has little for it to go wrong. I release the main outhaul and in light airs keep a little tension on it. In heavier air the wind will keep enought tension on it. My reefing gear for the main is a continuous loop line that goes through two rope clutches. Opening both, I put four rings on the winch of the incoming line and start to crank, making sure the outgoing part of the line is released. If you keep the roller furling resonably tight, as far as I can see there can be no problems. The only possible weak links would be the roller gear or the top thing that turns. So far I've not had a problem and those two items are within the mast, so are protected from the elements. On my mast there is a secondary rope clutch on the mast so I assume keeping the halyard tight is important. However, I have also thought of what I would do if for some reason the sail would jam. How would I get home or to port? I would not cut the sail but unconnect it from the outhaul and wrap it around the mast and secure it. When I got to port, I could then deal with the problem. When I first got this boat, my good friend and salesman who sold us the boat took us out on Lake Union to show us how to furl the main sail. I will not reveal his name as Phil of this web site and this good person are in the same building and Phil could have fun giving my good friend a bad time about this. But he had me winching the sail out with the roller furling gear and he pulled out the main. He had me turn it too fast and it did jam. Initial sail and we jam the main--had to go back in and the Signature staff all worked to unjam the main. If you go up in a bosum's chair and pull on the top part of the sail is comes out slowly but it does come out. But the main has never jammed for me. Don't fret it, you'll love this sail and you'll see a lot of advantages. Hope this helps.
 
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Dan

Furler Jamb

I have the 356 with the in-mast furling. I've not had any trouble yet with a jamb while taking in the sail. The retreive angle needs to be just right and with just a little or no presure on the sail for it to work well, otherwise it just doesn't move. I have had it fail to deploy completely a few times. All that I have had to do is roll it back in a few turns and then let it out again. There is a winch directly on the mast that should allow more direct effort to be applied to a jamb. Unfortunately, the main sheet and outhaul lines interfere with the winch handle. Not sure the manufacturer really thought that one out very well. I keep getting better at handling the furling exercise. Both furling lines and the outhaul run out on the same side (port) of the coachroof. If the jib is still up when you are furling and you are on a starboard tack (which happens to be the tack you need to be on to furl easily), you are down to one winch for the furling work. So you have tension on the outhaul, and have the furler in line on the winch. If you have any pressure on the sail, which I think helps it roll up just a little tighter, the outhaul is pretty hard to control. I have the spinnaker winches installed so have taken to putting the outhaul line around one of those a few turns. This allows me to control the outhaul with one hand while I crank the furl in line on the coach top winch with the other. Does anyone know if you can put an electric winch on the inside coach roof position on a 356 (it does not look like it would work without remodeling the shower stall ceiling)? Because this is the one thing that would make it truly easier to handle the furling option. Either that or I need to work the weight machines a little more, or maybe I should opt for stronger crew rather than prettier crew. Dan Jonas (S/V Feije II)
 
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Jay Eaton

Furling Main

We have an H380 with the Selden furling main. When properly attached to the furler and with proper halyard tension, the main should unfurl with the outhaul and furl with the continuous (blue on my boat) furling line. We do these activities by hand, no need to use the winch unless the wind is >30K. We hoist it on the furler in the spring, by hand. It should not be that difficult to use. We also have thought about what to do if the furler fails with the main unfurled. Les has the right idea.
 
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Chuck Wayne

selden main furling

some comments>>>>> Les has a good idea for salvaging a stuck main-but mine has never jammed! for offshore, selden thought about it- the mast extrusion has a groove that takes a standard bolt rope for a jib or staysail-I think it's an 8mm rope size, so you can set a standard sail in an emergency. Dan, take a good look at your rig-my 356 (#198) has the outhaul on the stbd side, furling lines to port-I don't have the winch problem you described.
 
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Daniel Jonas

Outhaul line

Chuck, In fact the manual shows the outhaul line on the starboard side. We ran the rigid boom vang line back to the cockpit using the space that would have been occupied by the outhaul. I may move the outhaul over there soon, but have to add another stopper first. That will then free up the port side for the installation of the spinnaker halyard. I do notice that putting the outhaul on that side causes some rubbing of the outhaul line against the furling winch when the boom is sheeted out to the port side. Even so, I generally do not completely release the main sheet when I furl. I suppose I could free the winch by setting the sheet with some slack using the stopper. In any event, it works from either side using the spinnaker winches. Dan Jonas (S/V Feije II)
 
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John Richard

Mine jammed during the first few uses

The first few times out, I had sporadic results during furling. There were two issues that when corrected, eliminated the problem. The first was that the tack of the main was not attached to the Selden in-mast furler at a right angle to the sail. This put a crook in the luff as it went up to the top of the mast. In fact, this area tore loose during furling in 20 knots. The second problem that has been mentioned here is to be absolutely certain that the halyard is very tight. No wrinkles in the luff. During the jambs that I experienced, I quickly solved the problem by using the ratchet at the mast. Set it to free, eliminate the jambed sail above the tack, and winch it in. Be sure that you return the lever to the ratchet slot, or the sail will unfurl. John Richard, s/v Jack's Place
 
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Deac Manross

Yes but........

IN response to the person who said that in case of a jam to just release the outhaul and wrap the sail around the mast, I have a question. That would be fine in light air, but things usually go wrong in high winds and I don't think you could really control that big main in high winds to be able to wrap it around the mast.....it would be like a bucking bronco. I tried that once when my furling jib jammed and I have $5000 finger surgery to prove that the sail was more than I could handle. How would you ever control the main to 'wrap it'?? I must be missing something. Thanks Deac
 
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Daniel Jonas

Control

Deac, It is a fair question. I agree that just grabbing a sail and trying to tie it down would be dangerous. My point was that the presence of the extra halyard provides something handy to tie the sail with until repairs can be made, and it makes sense to release the outhaul and tie it to the mast, what else could you do? You can't drop it if it is jambed. I suppose that one would want to release the outhaul in a controlled way with another line pulling the sail forward from the same outhaul attachment. Still a lot of sail moving around, but seems like it could be controllable. You indirectly point out how critical it is to work as safe as you can in that environment. When things break in heavy air and in particular in medium size and bigger boats, it can be very dangerous work to get things under control. Even when they aren't broke. I have a friend who lost the end of his finger some months ago with a line going through a winch. He is an experienced and safe sailor and I asked him what went wrong. The response was "too many captains". Every system has the potential for some kind of failure. We do a lot of double handed sailing (wife as crew). Although she is much more experienced than a year ago, there is much she either can't do physically, or does not yet understand from a process standpoint. Having the in mast furling makes life simpler every time we sail, and since I don't have to leave the cocpit to furl (which we do a lot of on San Francisco Bay) safer. At some point the sail will jamb and we will do what we need to do to handle the situation. Overall, it seems a fair trade. I've had a conventional sail fail to fall when I released the halyard before too. Had to go to the mast and physically pull it down (in fact, with a conventional sail, I've had to do that more than not). That flops around alot also and isn't the safest place to be when the waves are high and the wind is strong. Dan Jonas (S/V Feije II)
 
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Chuck Wayne

vang control to cockpit

Dan, that's a good idea-coming from racing dinghys, I've wanted to get the control line back to the cockpit so you can adjust the vang without going forward chuck
 
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Wayne Fredrick

Furling Jamb

Typically when you jamb a furling main while sailing, it is when retrieving the sail or trying to reef. Yes, it is most often under adverse conditions. The key becomes how hard you jamb the sail in the slot. Once you feel or hear something abnormal, do not think putting the downhaul on the winch and cranking home is going to solve the problem, usually jambs it even worse. If you do get a jamb and cannot get the sail to furl, release the down haul and while it might not be very pleasant, let the wind have it way with the sail. I jambed mine several years again and just let the wind flail the sail for a few minutes and lo and behold, it unfurled all the way. I then was a little more cautious and and furled it perfectly. Make sure the vang and mainsheet does not have any tension on them which will make furling and unfurling much tougher. Also, in heavy wind conditions keeping some pressure on the outhaul when furling the main will help keep wrinkles out of the sail and also reduce the chance of jamming.
 
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Bill

Wayne, Why ease the mainsheet?

Wayne: I'm interested in your comment regarding easing the vang and the mainsheet. I always center the main, and try to go into the wind before furling the main in. Sounds like you don't do that. Bill
 
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Deac

Wayne, do you mean release downhaul or outhaul?

Do you mean that by releasing the downhaul that the weight of the sail and the wind whipping it will free it up? And THEN refasten the downhaul and furl? Or do you mean release the outhaul and let the sail whip around awhile to see if that frees up the jam? Sounds like a good solution either way.........just letting random flogging fix the problem :)
 
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Les Blackwell

Some further comments on furling a main

Sorry, gang, I've been out sailing and just returned to stock up so we can go out again. I think there is the making of a mountain here rather than a mole hill. It is my opinion that jamming a roller furling main is unlikely at best, however, should I jam one, the question is, "what should I do?" I disagree that it happens mostly in adverse conditions--rather it is the result of not having your main sail halyard tight or using the roller furling gear inappropriately. It may happen in rought conditions, so the next question might well be, "what should I do in heavy wind conditions?" Cutting it down seems to be the the last resort. And I sure wouldn't want to go forward and climb up the mast to cut it down. This doesn't compute for me. If I could not wrap it around the mast ( and yes, this could be a probablem if it jams early on in so that the sail cannot go around the mast because of the spreaders), then I would take my 25 ft. dock spring line (25 ft) and go forward and lash the damn thing down pulling it forward toward the goose neck and around the mast. In forty to fifty knts of wind, I should not want to do more at that time. In heavy air, all I want to do is control the sail. I don't know about a down haul. My main does not have one. I have a tack , head and clue, nothing more. As for bringing my main in (I have done this hundreds of times now on my H380), I release the outhaul (when I remember to), release both furling locks and crank in on the in furling line. It doesn't seem to matter if the main sheet is out or not. It is much easier to crank it in going into the wind, but I have brought it in even going down wind. It is a lot more work hence we don't do it much that way--I have an adversion to work. We have brought the main in with the boom vang on--it makes it harder to do, but I think it tightens it better at the top, but again, I don't do that anymore--too much work. Once the sail is in, we center the traveler and haul in on the main sheet to keep things from banging around. That is all there is to it. It is a quantum leap in sail control and I like it.
 
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Barnaby

Mast has an Aux Mainsail Track

I have a 2002 356 and there is an auxilliary track built in to the mast just to port of the slot the main furls into. That, combined with the standard spare main halyard, means that all the rigging is in place for a spare main. I have had my main jamb once halfway out, I rolled it back in a bit and it came out fine. Otherwise, it's performed flawlessly. Overall I love my roller furling system. Much more control with inifinite reeefing points and it makes single-handling far easier.
 
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Chuck Wayne

mainsail jams

it's a nice feature but now we all need to get an emergency sail made with just a bolt rope to raise in it!my furler on the 356 has worked fine so far (knock on wood), even in 35Kt plus winds
 
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warren feldstein

where does the plastic disc go

I forgot where to put the plastic disc on the outhaul. Can anyone enlighten me. Thank you. The plastic disc must have something to do with making the furler more efficient. Other boats with in mast furling do not have the disk. I figure that it is not there simply to make alot of noise and strike someone in the head. From my perspective, the disc only adds friction. At least where I currently have it installed. With regard to unfulring, I find that it works exceptionaly smooth if I apply some slight pressue to the other side of the continuous loop furling line as this spins the drum and passes the sail out. I have always furled while heading up wind. However, this does not make sense. In a traditional main set up, you do not have to stop the boat to furl the sail. In the in mast furling, if you had to go to windward to furl, that would be too much of a negative to make the product viable. Just my 4 cents Warren Feldstein
 
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Chuck Wayne

mailsail furling disk

the plastic disk goes on the outhaul-fixed end at boom slide to sail clew, not on the clew to block side. I have no clue as to what it does! you can furl when off the wind, just make sure you ease out the outhaul slowly, keeping tension on the sail as you reef-if it's windy, you may need extra turns on the winch on the reefing line
 
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Chuck Wayne

mailsail furling disk

the plastic disk goes on the outhaul-fixed end at boom slide to sail clew, not on the clew to block side. I have no clue as to what it does! you can furl when off the wind, just make sure you ease out the outhaul slowly, keeping tension on the sail as you reef-if it's windy, you may need extra turns on the winch on the reefing line
 
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