Tag Archives: idea

The need to stop the flop

A little while ago I pointed out an article about a thing called a “flopper stopper” that would help to dampen rolling caused by wave action, and a video by Andy Lane where he shows the problem while crossing the Atlantic. Well, I had exactly the same problem while on my recent Netherlands cruise.  Here’s a short video showing how bad it can get in calm conditions. This kind of rolling makes doing anything aboard very difficult, including maintenance and cooking.

 

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2015-09-02 · 15:18

Crazy train ideas: cockpit cover frame from gallows

This is the sort of thing that comes to me when I’m half asleep on the train.

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The idea is to extend the boom gallows so that they fold back over the cockpit to near the boom end, and support them with two more rails that otherwise fold down where the current safety wire is. That will form a four-sided pyramid supporting the boom, or fold lower to create a cockpit tent.

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Filed under cockpit, gallows, Repairs and Modifications

Flopper stopper

Sarabande on the YBW forums posted a link to a device called a “flopper stopper” in a thread about wobbly boats.

This thing strongly resembles the Coromandel anchor locker lid. Mine makes ominous creaking noises when I step on it and I’ve been thinking about making it stronger. I bet I can make it do double duty as a flopper stopper when I do.

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Filed under flopper stopper, Plans, Repairs and Modifications

Presenting the Tied Hybrid system: can it work?

I’ve been pondering new sails for Tammy Norie for some time. My goals are to increase performance in light winds and improve upwind performance while keeping things simple, strong, and maintainable. I believe that I’ll need to increase sail area and add camber to my sails to achieve this. I’ve briefly described various methods in my earlier post New Sails for Tammy Norie . I had more-or-less settled on an HHH system for simplicity and maintainability.

On Friday I was looking at figure 10.2 from Practical Junk Rig showing how to attach the sail to the yard.

Figure 10.2 from Practical Junk Rig

Figure 10.2 from Practical Junk Rig

Then it struck me: why not attach all the panels to the battens with string? One weekend-long brainstorm later, and I present to you the Tied Hybrid system for Junk Rigs.

Tied Hybrid sketch

Tied Hybrid sketch

The idea is simple: cut the main panels flat with reinforced seams with eyelets. Then tie the panels to the battens with loops of cord. By adjusting the lengths of the loops you can adjust the camber of the sail in pretty much any way you like. Sprung cord locks allow you to do this easily, but you can of course use stopper knots. If the battens are smooth stainless steel tubes then the loops will slip round easily when tacking, flipping the sail camber to the other side.

In addition, it’s a simple matter to make split panels and get a split junk rig with jiblets. It wouldn’t even be very hard to carry both split and full-length panels on a voyage for different conditions. Since all the panels are the same you can get a lot of flexibility.

This is so simple that I have trouble believing that it hasn’t been tried and somehow failed. I’ll be interested in feedback from the members of the Junk Rig Association about that. If it hasn’t been done then I’ll definitely be giving it a go. It should be easy and cheap to construct, and allow for a lot of research into sail trim.

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Filed under Plans, Repairs and Modifications, sail