Lazy Jacks drawing??

[Divecoz]

done

[Hamin' X]

This one?



~Rich

[Retcoastie]

Sorry, I did not keep the one you are looking for. I did keep this one because I figured if I ever did get the energy to do LazyJacks, this would be the system. Maybe you will like it.

http://www.slowflight.net/upgrades/lazy ... ow-to.html

Ken

[Rick Westlake]

I found it before. I even printed it out. Sad to say I printed it to out too small to read the fine print... Dang and Now I cannot find that thread.
I searched Mods and I searched the forum in general . The Authors is " Edward W. ............. from MA. "
Can anyone remember where this drawing was located?

I've had pretty decent results with mine - in the "Mods" section:

http://www.macgregorsailors.com/modt/in ... ?view=1213

[Divecoz]

done

[The Mutt]

This one?



~Rich

This is the one I've been getting the parts for, instead of clipping to the boom directly I'm making a sail cover that will be connected directly to the lower third of the boom, there will be vertical sleaves insided the cover containing plastic strips from yellow toungue house flooring, that will give some outward pressure to hold the sail cover out a little allowing the sail to flake.

Alas I have to fit the intercooler to the Range Rover before I play with the boat.

Glenn

[Nautek]

I have a very detailed file in PDF format of the Harken system if anyone wants a copy.
I would put it on the site if I knew how

Allan

[The Mutt]

Allan to post a link to the Harken site and the pdf itself all you have to do is copy the link location in the address bar on the top of the page and paste it in your reply, if it's on your hard drive upload to a web site that allows pdf's to be saved (if you have a web site of your own use that) then post the link to your reply.

Is this the pdf you wre thinking of posting? http://www.harken.com/pdf/4060.pdf

The reason I like the lazy jacks Hamin' X posted is that the top mast connection stays in place, the boom connections unclip slip under the hook and connect to the eye strap on the front of the mast ready for trailering.

Quick and simple is what I'm interested in, I want to sail not play jigsaws on the top of the ramp, what works for me ins't necessarily what will work for others.

Glenn

[KayakDan]

This design was from Ed Goodhue,a long time member of North East Trailer Sailors,and a very interesting guy.
I used his design and modified it a bit.
I used bungee lines,making it "give" with the movement of the sail. Where the two lower blocks are, I attached small ss caribiners to the upper line. The caribiners then hook through the bales of the ss blocks,and can be unclipped for storage.
I wrap the slack line around cleats on the boom for storage,and the upper line is clipped to the mast using the caribiners Ed's method stores the entire setup on the mast.
Ed liked the upgrade,and he was amazed to see his now 30+ year drawing was still in circulation.

[Duane Dunn, Allegro]

I find the implementation illustrated here of particular interest.

http://www.slowflight.net/upgrades/lazy ... ow-to.html

I really like the simplicity of the design that allows it to be pulled down tight to the boom with a single line from the cockpit, or hoisted with a single line. This also lets the installation work perfectly with a normal sail cover.

Of particular interest however is one comment he makes that could be the key to a lazy jack installation on a Mac.

The issue that is always a problem with any style lazy jack installation on our boats is the narrow boom and mast that results in a narrow slot you have to get the sail to slide down in. In anything but a perfect situation you end up fighting battens that hang up on the jacks.

Down below the description of his installation he mentions the possibility of attaching the upper blocks for the brown lines to the spreaders instead of the mast. This could be the answer for our boats. If the blocks were 6"-8" out on the spreaders the slot the sail has to fall into would be much wider and batten hangups should be greatly reduced.

I could also see adapting this installation to a stack pack style sail cover by attaching the lines to the upper cover edge instead of the boom. This combined with spreader mounted upper blocks would make a nice wide cradle for the sail to be dropped into. When in the lazy jacks lowered position the cover would be secured nicely along the boom.

I see a winter sewing / installation project coming. Time to use that extra Sunbrella fabric I have out in the shed.

[The Mutt]

Down below the description of his installation he mentions the possibility of attaching the upper blocks for the brown lines to the spreaders instead of the mast. This could be the answer for our boats. If the blocks were 6"-8" out on the spreaders the slot the sail has to fall into would be much wider and batten hangups should be greatly reduced.

My thought process went this way after reading http://www.slowflight.net/upgrades/lazy ... ow-to.html a few weeks ago:

If the problem is the boom being too narrow, moving out the upper lazy jack attachment to the spreaders 6"-8" will still leave a narrow boom, as the sail bundles up on the boom not at spreader height would'nt it be better to move the attachments out at the boom.

That was the direction my thoughts went after reading the article, next I started thinking about how to hold the lazy jack boom attachments out a bit further, I don't want to use stainless or ali for this so mt mind went to what we see while working, on pop-top caravans the make a permanant sleeve into the pop-top and add a plastic finger, the natural tendancy of the finger is to bow the vinyl pop-top inward to clear the roof when lowering.

My solution is to make sleeves inside a sailcover to hold plastic strip, the plastic strips I'll use are from yellow tongue flooring offcuts, to assist applying outward pressure I will be securing the lowest edge of the plastic strip to the boom with stainless screws through the sailcover a bit below the centre line of the boom so the plastic sticks outward a bit.

I'll draw something up in Photoshop, might make more it clearer.

Glenn

[Nautek]

Glenn

This one is the right size

http://www.harken.com/pdf/4058.pdf

http://www.harken.com/pdf/4171.pdf

Allan

[Duane Dunn, Allegro]

The problem isn't the narrowness of the boom itself, nor the narrow space between the lines down near the boom. The snags all happen way before the sail is down to the boom. Having a wider gap up high is what will help reduce the hang ups.

[The Mutt]

Darn I posted the wrong pdf, I had read the others but grabbed the wrong link by mistake.

Sorry about that Allan

Duane, is there any advantage in having the lazy jacks held out at the boom connections as well as 8" out from the mast off the spreader using a stainless jaw coupling?

Glenn

[c130king]

Of particular interest however is one comment he makes that could be the key to a lazy jack installation on a Mac.

The issue that is always a problem with any style lazy jack installation on our boats is the narrow boom and mast that results in a narrow slot you have to get the sail to slide down in. In anything but a perfect situation you end up fighting battens that hang up on the jacks.

Down below the description of his installation he mentions the possibility of attaching the upper blocks for the brown lines to the spreaders instead of the mast. This could be the answer for our boats. If the blocks were 6"-8" out on the spreaders the slot the sail has to fall into would be much wider and batten hangups should be greatly reduced.

This is exactly what my LJ system has...installed by the PO. I have some hangups when raising the sail if I get slightly off the wind...but this is a minor issue IMHO and is quickly fixed by lowering the main a little to free the hangup, getting the boat back into the wind, and hauling away. I don't even think twice about it. Never had a hangup coming down.

Originally the boat had a "single-line" system that allowed the system to be pulled tight after the sail cover was removed and also slackened so that the lines could be pulled to the mast to allow the sail cover to be put on. But the "free end" of the LJ line was on the end of the boom...thus when the system was pulled tight I ended up with a big mess of line (my guess about 15' of line) at the end of the boom that I gathered/wadded up and bungied to the end of the boom...very "unsightly" as they would say here in the UK. So I modified the system by using cheap Walmart carabiners ($1.79 for pkg of 4) at the ends of the "main" lines of the LJ system. Now I just disconnect the 4 carabiners to pull everything to the mast for putting on the cover.

Here is a picture. You can't really see them in this pic but there are carabiners on both sides of the boom (clipped to small mounts attached to the boom) about a foot back from the goose neck and two more at the end of the boom. You can also see the lines atttached to the spreaders that pull the LJ opening "wider". I never disconnect these lines...even when the mast is taken down.



Just another opinion. Take it for what it is worth.

Cheers,
Jim