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    Sail servos
    23 Posts ยท 5 Followers ยท 11 Photos ยท 73 Likes
    Began 11 days ago by
    Midshipman
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    Latest Post 7 days ago by
    Lieutenant
    Canada
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    RossM
    Lieutenant
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    ๐Ÿ“ Sail servos
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    Yes, that would be the issue. You would have to move the sheet exit point from the deck, back further. This gets complicated quickly.
    Force nothing, waste nothing, leave nothing undone
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    luckyduck
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    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Sail servos
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    Yes it would allow further movement out, but then does not allow the boom to be tighter in when close hauled. I think I would prefer to be on a broad reach and still be able to beat to windward more easily than to be on more of a dead run. Thanks for the suggestion - only practice on the water will give me the final adjustment.
    RossM
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    Glad I could be of assistance.

    Would moving the mainsheet attachment point on the boom closer to the mast give you more range of movement of the boom to full out?

    I do this alot with the DF65 to adjust the boom because it is so simple to adjust the attachment on a DF65
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    luckyduck
    Midshipman
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Sail servos
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    Have now re-worked the tension system on the mainsheet, with thanks to RossM for guidance, albeit I have modified his thoughts a bit - first photo shows full tension, where the white elastic is at full stretch, and as it is not quite long enough, there is also an elastic 'connection' at the top end of the white elastic to absorb the extra stretch required - second shows no tension with sail fully out, . I have not got the full mainsheet run required - but it is probably close enough. Tested this many times now on dry land, and just need a real wind test to validfate this solution. Thanks for all the input.
    luckyduck
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    That's not a laugh - it works, and does the job - just need a few more mast supports!!! I have a similar problem with twin foresails - except the forestay, round which one of the foresails goes has far more friction that a solid mast - but it all works - so that is what it is about, and trying to keep it looking vaguely realistic
    RossM
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    If you want to have good laugh before starting, check my video on moving a STAYSAIL between 2 masts. (only the engineering mock-up)
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    luckyduck
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    Thanks RossM for your input -will try your loop line setup, and see if it hangs together. Will keep you updated.
    RossM
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    can your pulley handle the LOOP LINE, MAINSHEET, and ELASTIC LINE volume?

    This is going to be a BUSY pulley. can you put the tensioner on the back side of the loop? 2 idler pulleys side-by-side with the tensioner pulley between them, pulling away. the usual method. see also my KUBOTA picture. I think some elastic line might suit you for the tensioner spring
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    RossM
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    A simple LOOP KNOT in the LOOP LINE

    expanded size for display. Tightened and half tightened

    Then tie the mainsheet to that loop

    repeat to tie the elastic to the mainsheet 4 inches or so down the line

    anchor elastic other end to the SHEET SIDE of the loop
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    RossM
    Lieutenant
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    Main sheet is tied to the loop line

    Elastic is tied to the mainsheet, about 4 inches down

    Elastic begins to stretch as the mainsheet rounds the pulley

    This keeps the tension on the mainsheet as it rounds the pulley

    Travel is about 4 inches more as the mainsheet rounds the pulley

    I think all you need is an 8 inch elastic in the right place
    Force nothing, waste nothing, leave nothing undone
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