Hi Roger, If you are using an arm winch perhaps try a metal gear 17Kgrm standard servo.
That is powerful enough to work all 3 sails, you would need to make an arm that screwed down onto a servo top. Howes have them at about ยฃ10.
They are a lot simpler to set up as well.
If you go for a larger winch there is more than one way to set them up.
I use the simple system of a cord out to a pulley and the cord has an elastic return attached and winds back on the TOP of the 2 winch drums.
You can get a 1mm plastic cord that stretches enough for the job. Do not use Shirring elastic as it degrades after a while.
Which ever way you use a pulley system you will need to be able to tension it otherwise it goes wrong.
The servo is rated at 17Kgrms at 1 cm. So effort reduces at the end of the arm. A winch has a constant pull as it is a rotation.
Have you fitted a drive motor yet?
regards
Roy
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