Two Sheets To The Wind

18th century term describing someone who is Not as drunk as someone who is “three sheets to the wind”. Derived from the act of being unable to control his vessel, hence leaving the sheets unattended.

In a recent post, Seven Doo Dads, I briefly mentioned converting over from one to two independent mainsheets, and eliminating the traveler.

In this post I attempt to describe our method to eliminate the traveler.

Kelly knows I’d been mumbling and stewing over this upgrade for a while, especially after poking holes into our new canvas dodger to allow traveler adjustment lines. Adding insult to injury, more holes were drilled into the combing, to move the cam cleats and fairleads forward under the combing, seemingly necessary to make the lines accessible.

Any damn fool can navigate the world sober. It takes a really good sailor to do it drunk. – Sir Francis Chichester

Inebriated or not, we prefer to keep our sheets properly controlled. Our beefy 28-year old Harken traveler was in need of new bearings at this point. So, now after cruising thousands of miles with the suboptimal system, making a change bubbled to the top of my list of upgrades. We were primed for an overhaul of this outdated contraption, and make the conversion.

Let’s start this project! First some nomenclature for the non-familiar with a few related sailing terms:

Cutting through the jargon: A traveler is boat-speak for a track-mounted device used to adjust mainsail shape, essentially improving its efficiency under various conditions. A sheet is a line used to control a sail; and mainsheet connects the traveler to boom, which holds the foot and clew of the mainsail.
Basic traveler/boom/mainsail/sheeting setup. (Sketch borrowed from CD per logo).
Before adding dodger. Note cam cleats on ends of traveler (were accessible) and smaller stabilization line leading down from boom on right.
Three lines: Mainsheet and two traveler lines penetrate dodger. A fourth line is added to keep the boom from swinging side to side when not underway. Read on – this will make more sense.
After adding dodger, traveler control lines became inaccessible. (See opening photo above).
Highlight on left indicates fourth “stabilizing“ line attachment to keep boom from swinging while not underway. Highlight to right shows one of two holes through new dodger window .

That was the original traveler arrangement. Now let’s get to work on the arrangement and construction. How can we make this work? Should I use the entire traveler track or scrap the whole thing?

Notebook sketches… Pondering several configurations.

After many sketches and head-scratching, I figured to use all the existing blocks, keep the original Harken deck mounts and only need to purchase two flip-flop blocks.

Flip flop blocks allow right angle to pivot from the deck.

Measuring for the original alignment. Measure three times! Assuming reusing the traveler bases, where to locate the flip flop blocks?

Next step: remove the old traveler. Harken makes these components to handle massive loads, and so I decided to keep and re-use the original supports for our new blocks.

Removing the original traveler mountings requires patience and a lot of banging. I had to purchase drifts to push and pound the old mounting pins out. (larger sledge hammer not shown!)

Using string and tape measure, we again carefully aligned the new flip-flop blocks so they entered under the combing with minimal friction to the new sheets.

Old hardware removed, we ran string to recheck alignment. Piece of cardboard and tape container simulates the flip-flop block.
Carefully looking for clearance to attach backing plates.
New deck blocks in place.

But metal shackles (metal-on-metal) create a lot of grinding and noise under load, and when the boom is bouncing around. I tried several configurations to improve:

The boatyard gave us a piece of Delrin dowel, a simple one-inch diameter that fits perfectly as a spacer! Bartering with a case of beer, I convinced a talented machinist to cut and drill sections of the dowel, to fit over the pins, mostly eliminating the excess noise and wear. Almost perfectly…

Groove cut into the delrin sleeves.

However, the heavy shackle hubs didn’t fit over the dowels. Just the excuse needed to buy a dremel tool for some final tweaking.

Eventually, here’s the final result!

5:1 dual mainsheet arrangement.

Now only two lines enter the cockpit, red for port and green for starboard. Thus we’ve eliminated two of the four lines while maintaining complete mainsail control.

Afterthoughts:

Not to belabor this topic, a corollary modification was to reduce boom twist (torsional force on gooseneck) by adding bales to replace the bottom attachment points. Running short on time before launch I asked the local rigger to find and add three large bales, for which to attach the boom blocks. However, because the new bales aren’t rounded, only narrowing to a lower point, they do nothing to solve the problem of boom twist, and are now left unused. (Note for future: triple-confirm to rigger that he understands what you want).

Original mounting point foreground, to show difference between mounting points.

Have a great day!


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