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Trim For Control

Trim For Control. “Proper Sail Trim is all about balance. All boats will go faster, be more comfortable to sail and will handle more easily when sailing on their lines.”. The Goals. Upwind:VMG Offwind: Maximizing Power At All Times: Controlling Heel HEADSAIL TRIM & CONTROLS

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Trim For Control

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  1. Trim For Control “Proper Sail Trim is all about balance. All boats will go faster, be more comfortable to sail and will handle more easily when sailing on their lines.”

  2. The Goals • Upwind:VMG • Offwind: Maximizing Power • At All Times: Controlling Heel • HEADSAIL TRIM & CONTROLS • MAINSAIL TRIM & CONTROLS

  3. Optimum VMG =

  4. the upwind problem

  5. Sail Depth = Power = Heel

  6. Headsail: primary controls • Genoa/Jib Sheet • Lead Position • Halyard Tension • Backstay

  7. Sheet Tension

  8. jib sheet tension

  9. why do we need to adjust sail trim

  10. telltales and trim / driving

  11. Halyard Tension

  12. Lead Position • Use tell-tales to set initial lead position • Move lead aft to flatten bottom and twist off top - this will depower the sail • Move lead forward to increase power in sail

  13. Power Control: headstay sag • Adjusting backstay is primary control of headstay sag • Light air - a little sag is often good • Heavy air - too much sag will hurt the boats ability to go to weather and cause excessive heel

  14. The Mainsail • Main Sheet • Traveller • Vang • Halyard Tension • Cunningham • Preventer • Backstay • Outhaul

  15. mainsheet

  16. mainsheet rule of thumb

  17. twist for control

  18. Why do we need to control twist

  19. mainsheet off the wind

  20. Vang • controls twist off the wind

  21. traveler

  22. Luff Tension • Cunningham • Halyard Tension

  23. Mainsail Depth • Outhaul - Controls depth in lower third • Backstay - Controls depth in middle/top

  24. Three Modes of Trim

  25. Reefing / the clew

  26. reefing / the tack

  27. Putting it All Together

  28. and more…

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