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December 14, 2016

A WINCH TO ADJUST THE STEARING LINES

Not many people today sail without autopilot or windvane.

I do becouse its simple, cheap, takes up no space and is fun, also few things can go wrong.

A few things have to be kept in mind, no play in the system and a possibility to adjust the rudder angle rather precicesly.

On Bris I had a wheel and it was geared 10:1 to the rudder, that is ten turns of the wheel turned the rudder once. Adjustments of the spokes had to be done not more than a few millimeters at the time as the wind did change.

On Exlex there is no rudder. The stearing lines goes directly to the tillers. I realise i need a product to reduce line movement. The boat will move about in big waves. I have come up with the following device I call it a “Vector Winch”.

It works on the swig principle. The way you haul a line, especially a halyard, taut manually.

Theoretically it has a power range from infinity to minus 2.

For 30 cm between the fairleeds if you mowe the line 30 mm at right angle to the tension the line will be 0.6 millimeter shorter a reduction of 50 to 1.

50 mm shorten 1.6 millimeter reduction 32 to 1.

100 mm shortens line by 6 mm.

This way I can fine adjust my rudders.

Photos below show a mock up. It works wery well.

There is 30 cm between the fairleeds and two line jammers.

Me happy with my device.

Tension the winch:

Below Photo from the side:

To use the device, release the jammer close to the tiller, tension rope the desired amount, close the jammer, release the secound jammer, take up the slack, close the secound jammer. Done.

These products will be mounted abouve my bunk where i spend most of my time reading sleaping drawing on the next boat “Boat Ideal”. When I am in other parts of the boat the jammers are released that way I can steer from every other part of the boat also.

To be continued…

Regards Yrvind.




December 13, 2016

PICTURES OF STEARING CONTROL FROM BUNK

Hello Friends. Here are some pictures from my work on the system to control stearing from the bunk.

I have no self stearing on my boats. I control the boat by adjusting tiller and sails. More often than not there is a windchange when I am in bunk.

Its therefore desireble to be able to control the rudder from there. At the same time I do not want water to enter the boat so there are leather seals on pistons in carbon pipes.

Below making the seals: The leather in the tool after being soakt in water for a day and dried to take the new shape.

Cutting her clean.

The tool dismantled

The product

The seals on the piston. By dividing the rope there will be no wicking effect.

The ropes the piston ready to enter the pipe. The fairleads is also there.

The Fairleeds.

Lines coming into the boat

The lines in the bunk. Next step is to find the adjusting system.

Besides stearing the boat the two rudders will be used as a drouge and stabilising system when running downwind. By edging the two rudders a few degrees toe outhopefully I can make the boat go stright downwind in heavy weather.

To make it easier to work on the inside I will wait a bit by adding the full deck.

To be continued…

Regards Yrvind.




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