Lazy bag / stack pack

concentrik

concentrik

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I plan to make my own stack pack along with lazy jacks but - I'm not sure there's room in the boom slot for the thickness of the sail and two thicknesses of bag canvas. The slot is 4mm and I will do a little mock-up to try it tomorrow, but if it won't fit, is there another method of attaching the bottom of the bag to the boom? The main has a boltrope.
 
concentrik said:
I plan to make my own stack pack along with lazy jacks but - I'm not sure there's room in the boom slot for the thickness of the sail and two thicknesses of bag canvas. The slot is 4mm and I will do a little mock-up to try it tomorrow, but if it won't fit, is there another method of attaching the bottom of the bag to the boom? The main has a boltrope.
Click to expand...

In our stackpack, the section that goes into the boom is made of thin white nylon fabric. This is sewn to the thick blue canvas which makes up the actual stackpack. The foot of the sail and the thin white nylon get fed into the boom slot together. A bit of jiggling and it's in.

Good luck.
 
KAL said:
In our stackpack, the section that goes into the boom is made of thin white nylon fabric. This is sewn to the thick blue canvas which makes up the actual stackpack. The foot of the sail and the thin white nylon get fed into the boom slot together. A bit of jiggling and it's in.

Good luck.
Click to expand...

That's what mine is like - it appears to have strengthening/Teflon? at the feed in end, to make it easier to slide in. Still a bit of a struggle though - ideally the bolt needs to be a size smaller to make it easy.
 
KAL said:
In our stackpack, the section that goes into the boom is made of thin white nylon fabric. This is sewn to the thick blue canvas which makes up the actual stackpack. The foot of the sail and the thin white nylon get fed into the boom slot together. A bit of jiggling and it's in.

Good luck.
Click to expand...

As KAL says - no way ours would go on with bolt rope + two layers of canvas.
 
PetiteFleur said:
That's what mine is like - it appears to have strengthening/Teflon? at the feed in end, to make it easier to slide in. Still a bit of a struggle though - ideally the bolt needs to be a size smaller to make it easy.
Click to expand...

The teflon strengthening is a good idea. I'm going to try rubbing a bit of candle wax onto the white nylon this year to see if it makes the slide-in any easier.
 
I have the same problem. According to a tame(-ish) rigger, the solution is to go loose footed. You'll need a tape loop to round the boom at the aft end and a stronger outhaul, but it simplifies things no end. There can be advantages to a loose footed main in light airs, too, as it allows a fuller shape, though I've no idea whether I'll notice the difference in practice.
 
I got a velcro webbing strap for the clew of the mainsail and converted it to loose footed. The stack pack is then stitched to luff tape which goes in the foot groove.

Works well. And I got a better shaped mainsail out of it too.
 
Your lazy jacks should go under the boom and be located with some eyes. Just attach the bottom of the sides to the eyes and have a couple of brass grommets near the top of the sides for each of the lazy jacks to run through.

Couple of mast attachments each side and you are good to go
 
KAL said:
In our stackpack, the section that goes into the boom is made of thin white nylon fabric. This is sewn to the thick blue canvas which makes up the actual stackpack. The foot of the sail and the thin white nylon get fed into the boom slot together. A bit of jiggling and it's in.

Good luck.
Click to expand...

Mine is the same. I think that the nylon though is some sail material. A bit of a pain putting on at the start of the season, though a few minutes aligning the mainsail bolt rope and the cover does help.
 
concentrik said:
I plan to make my own stack pack along with lazy jacks but - I'm not sure there's room in the boom slot for the thickness of the sail and two thicknesses of bag canvas. The slot is 4mm and I will do a little mock-up to try it tomorrow, but if it won't fit, is there another method of attaching the bottom of the bag to the boom? The main has a boltrope.
Click to expand...

my old pack was actually screwd to the boom with self tapping screws which I never liked and were always coming loose. I am now having a new one made which will slide under the sail in the slot. Have also got to fill 10 small holes in the sides of the boom?? any suggestions appreciated?
 
Fixing stack pack to boom

I made one about 2 years ago. Used awning aluminium extrusion either side of the boom and a 5mm bolt rope in the bottom of the the stack pack. Long plastic zip for the top with a suitable amout of material on the top to fold over. Bought extrusion on flebay comes in 1M lengths 4 in a pack. Only problem was that screws that came with it were supposed to be SS which have now rusted ??? Job for the summer !
Cheers

Nigel
 
Our lazy bag actually zips to the foot of the main. A big plastic zip is sewn each side with some re-inforcment which fits into the standard boom slot. Then just zip each side onto the sail. Zip on top of the bag keeps the two halves together at the clew end of the boom where one end of the top zip is permanently held together. Its very easy to remove. Leave it zipped on and closed up and will come off with the sail inside or you can simply take it off levaing everything in place.
 
NigelFortune said:
I made one about 2 years ago. Used awning aluminium extrusion either side of the boom and a 5mm bolt rope in the bottom of the the stack pack. Long plastic zip for the top with a suitable amout of material on the top to fold over. Bought extrusion on flebay comes in 1M lengths 4 in a pack. Only problem was that screws that came with it were supposed to be SS which have now rusted ??? Job for the summer !
Cheers

Nigel
Click to expand...

Making one in similar fashion at the moment. Only difference is that I've screwed plastic bolt rope track to the sides of the boom, aluminum not available locally.
 
I tried posting information several days ago and was notified to the effect that a moderator needed to review the post before becoming visible. Since apparently that has not happened, I’ll try again.

I had planned to make a stack-pack and found some Internet sources.

Sailrite sells a DVD titled “Make Your Own Sail Pack” that has an option for sails with a boltrope on the foot. Essentially, slots are cut in the sail just above the boltrope to provide for straps to pass through the sail and down around the boom. The DVD and the included pdf instructions are quite good I thought, and lead me to think of several things I probably would not have thought of on my own.

http://www.sailrite.com/Make-Your-Own-Sail-Pack-DVD

Post number 9 in the following link has link to a pdf for a DIY sail pack that might also be useful.

http://www.anything-sailing.com/showthread.php/3088-DIY-Sail-Pack?highlight=stack+pack
 
Tejas said:
Sailrite sells a DVD titled “Make Your Own Sail Pack” that has an option for sails with a boltrope on the foot.
Click to expand...

Buy the machine and the DVDs come with it. OK it's expensive (LSZ-1) but, mine has more than paid for itself with dodgers, bimini, cockpit tent etc. Now making sail cover and dinghy tube covers.
 
Ours is attached to the sides of the boom in riveted on channels, probably the same stuff that is used to put caravan awnings onto the sides of caravans? All that you need to make then is a stitched in bolt rope and the stack pack is made in two halves. Easy to fit and remove without taking the foot of the sail out of the groove.
All the Dehler 'Maindrop ' systems are put together like that and it is easy to remove for racing !
 
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