leeboweffect

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About leeboweffect

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  • Location
    High Point, NC
  • Interests
    Sailing

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  1. A quick side by side comparison of GPS telemetry instruments commonly used on sailboats. https://www.youtube.com/watch?v=xv3JMuvxy54
  2. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    I have been told the same by several sailmakers. I agree that going for the "splitting the angle approach here would really over tension the foot.
  3. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Just what I read, 40 - 50% from the tack up the luff. I have also been given these figure by several sailmakers I've worked with. http://www.onesails.com/headsail-trim https://www.sailmagazine.com/racing/headsail-sheeting http://www.teamwindcraft.com/basics-of-trimming-your-headsail/ Do you have a reference for the "split the angle" theory?
  4. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Forgot I had this pic. Here is a side view of the boat, jib sheet attached at the center hole on the adjustable clew plate. The luff intersection is below 50%, my guess is right at 40%, red line, which is what most references I've checked suggest. The foot appears cupped to me, over sheeted. Not sure what you're seeing in the video that makes you think there is excessive leech tension? The tack is as low as it can go do to the required bridle wire length. It's attached right at the intersection plus shackle. Thanks for your input!
  5. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Here is a video with my regular crew, about 110 lbs., jib attached at center hole, and not sheeting as hard as Curtis (previous video). Indeed I see more flutter.
  6. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Not a furling jib and always stored very neatly rolled. This sail didn't come with a leech line, but it may be necessary if going back to a 2:1 sheeting system and playing around with other things doesn't work. I hate the 2:1 setup as it's sooooooooo much line to take up even if you use pigtails IMO. I have shared the video with Skip E see above reply.
  7. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Leech hollow and cut of sail, it's a virtually new EP tri-radial. If anyone would know how to make a sail for this boat correctly I would think it would be Skip as he made the originals. The sail does have leech battens, but I can check to see that they are in securely, good suggestion. I can attempt the horizontal tree test on the boat and simply shoot some pics from below, not sure when I'll get to it.
  8. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Oak Hollow Lake is my home base and where these videos were shot. The winds are so shifty (literally instantaneous 180 deg. at times) and unpredictable in the strength of gusts that I very, very rarely use a trap on this lake as doing so most often results in a reverse capsize, pitchpole or other nasty situations. Here is a video with crew of about 175 lbs (I think that's what he said) sheeting very hard (yes still 1:1, but very hard, jib attached center hole) and indeed I see/hear much less flutter.
  9. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    I do intend to experiment with luff tension/downhaul as well, just not there yet. Already called Skip. He suggested using the camera to get footage of the leech when fluttering so he can assess the issue and that's a great idea. Problem for me is the mounting as I don't use the universal type RAM mount balls. Maybe I can borrow some of the RAM mount stuff from a friend and video the luff, it's only time !@#$!@#$!@#$
  10. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    Thanks xonk1. I do intend to try the upper clew plate hole at next opportunity in addition to tightening both my standing rigging tension and jib downhaul.
  11. leeboweffect

    Nacra 5.0 Jib Leech Flutter

    My jib is a one season old lightly used Elliott/Pattison tri-radial. Since my boat doesn't had fore and aft adjustable jib block cars I had the sail made with an adjustable clew plate (like a Hobie 16 jib). From day one the leech fluttered when close hauled in winds above about 12, jib sheet attached at the center position. In this video I tried more foot tension then more leech tension with no discernible difference. On this sail I didn't have time to try the top or bottom clew plate holes, that will be the next experiment. It is hard to believe that my sail could be stretched no more than it's been used. Thoughts, comments?
  12. Perfect, may build one myself.
  13. leeboweffect

    Nacra 5.0 easily smokes an Astus 16.5 Sport.

    All I hear is that the "new" technology is so superior. Really, when a $200 basket case 1983 Nacra 5.0 running the original tattered sails can outrun a $30,000 + VPLP "new" technology trimaran I don't find superior in the conversation.
  14. leeboweffect

    Nacra 5.0 easily smokes an Astus 16.5 Sport.

    Wrong (my 5.0 regularly enjoys H16s as light snacks) and yes.