Islander 36 Fleet San Francisco Bay Sail Shaping
Islander 36 Fleet San Francisco Bay Sail Shaping for Performance Sailors Sail Trim Lecture Module #2
Sail Shaping for Performance Sailors Second Module l Mainsail Shaping l Rig Control l Shifting Gears for Conditions
Mainsail Shaping Mainsail Anatomy l Mainsail Shaping Tools l l l l l Halyard Cunningham Outhaul Boom Vang Mainsheet Backstay Adjuster Reefing Lines Mainsail Shaping
Mainsail Anatomy
Mainsail Parts
Fore & Aft Location of Draft in Mainsails
Twist in the Main
Vintage Star Main with Twist
J 24 Worlds – Main Trim
Islander 36 Main Trim - Telltales
Farr 40 Worlds SF - Mainsail Trim
I 36 San Francisco - Mainsail Trim
Farr 40 Worlds SF - Mainsail Trim
Islander 36 Mainsail Trim - Twist
IAC Mainsail Design – Our Future
Sail Shaping for Performance Sailors Second Session l Mainsail Shaping l Rig Control l Shifting Gears for Conditions
Rig Controls l Masthead Rig – Backstay Adjuster – Boom Vang/Preventer – Roller Furlers
Islander 36 Rig
Islander 36 Rig
Swan World Cup – Masthead Rigs
Islander 36 San Juan Islands Rig Control & Headstay Sag
IAC Mast Bend/Main Trim
Angostura Regatta – Rig Loss
The Roller Furler Controversy Angostura – Odessy Roller Furler
Islander 36 with Roller Furler
UK Sails Roller Reefing Dacron Genoa
UK Sails Roller Reefing Mylar Genoa
Sail Shaping for Performance Sailors Second Module l Mainsail Shaping l Rig Control l Shifting Gears for Conditions
Shifting Gears for Conditions l l l l Lead Positions Halyard Trim – Draft Forward Sheet Trim Boom Vang Traveler to Leeward Mast Bend Feathering versus Pinching Reefing
Shifting Gears for Conditions l First Gear is Used in 0 – 6 kts of Breeze l l l l l Light Wrinkles in Jib Luff Draft 45 to 50% Aft for Regular or Point Mode Jib Leads – 2 Holes Forward Medium Wrinkles in Main Luff Maximum Main Draft 55% No Backstay/Mast Bend Traveler to Windward and Ease Mainsheet to Induce Maximum Leech Curve – Vertically Boom Vang - Loose Induce Heel – Crew Weight to Leeward
Islander 36 - First Gear
Islander 36 Fleet - First Gear
Shifting Gears for Conditions l 2 nd Gear is Used in 6 – 12 kts of Breeze l l l l l Light Wrinkles in Jib Luff Draft 45 to 50% Aft for Regular or Point Mode Jib Leads – Regular Position for all Telltales to Break at Once Medium Wrinkles in Main Luff Maximum Main Draft 55% Light Backstay/ Little Mast Bend Traveler Slightly to Windward and Trim Mainsheet to Reduce Vertical Leech Curve – Increase Pointing Boom Vang Tension – Light to Firm to Restrict Boom Lift Heel – Crew Weight to Windward
Islander 36 2 nd Gear
Islander 36 2 nd Gear
Shifting Gears for Conditions l 3 rd Gear is Used in 13 – 18 kts of Breeze l l l l l No Wrinkles in Jib Luff Draft 45% Aft for Regular or 40% for Power Mode Jib Leads – 2 Holes Aft Position for Upper Telltales to Break First – Light Upper Leech Twist Less Wrinkles in Main Luff Cunningham and Outhaul on Hard Maximum Main Draft 50% Medium Backstay/ Moderate Mast Bend Traveler Mid-ships and Trim Mainsheet to Reduce Twist Boom Vang – Taught to Very Tight Heel – All Crew Weight to Windward
Islander 36 Racing - Third Gear
Islander 36 Cruising - Third Gear
Islander 36 – Upwind Main Twist
Shifting Gears for Conditions l 4 th Gear is Used in 19 – 25 kts Smaller Headsail – Jib l Halyard – Draft Forward (40%) l Jib Leads – 3 to 4 Holes Aft = Medium Leech Twist l Bladed Out Main – Draft Forward (45%) l Maximum Backstay l Traveler to Leeward l Maximum Boom Vang – Vang Sheet if Gusty l
Islander 36 4 th Gear Trim
Islander 36 4 th Gear Trim
Shifting Gears for Conditions l 5 th Gear is Used in 25 kts and Up Reef l Balance l Heel l Draft Forward in Jib for Breakthrough Power l Jib Leads Aft for Upper Leech Twist (4 to 6 Holes) = De-power l Flat Main w/Big Speed Bubble & Leeward Traveler l Use Vang Sheeting l
Islander 36 Cruising - 5 th Gear Trim
BOC Single Handed Heavy Air Trim
5 Key Factors for Success 1. 2. 3. 4. 5. Trim/Sheet Both Sails in Unison Sync up Jib and Main Draft Positions 40/45, 45/50 and 50/55 Use Draft Stripes to Help Set Draft Positions Main Trim Upwind– Top Telltale Flying 50%, All Others Flying 100% Feather to Manage Extra Power and Heel
Sail Shaping for Performance Sailors Second Module – Q&A l Mainsail Shaping l Rig Types l Rig Control l Shifting Gears for Conditions
- Slides: 48