J/109 Tuning Guide

Base Settings

• Rake – Swing Arc – Use jib halyard pulled down to top of black band on mast – swing fwd to mark headstay.
• Rake – Distance from mark on headstay to deck at stem: 2230 mm
• Cap Shroud Tension: #60 on RT-10 Loos Gauge
• D1 Tension: #40 on RT-10 Loos Gauge
• D2 Tension: #25 on RT-10 Loos Gauge
• J Dimension: Measured from stem to Fwd face of mast: 4050mm
• Mast Base: Measured from Fwd face of mast to bulkhead: 460 mm
• Pre-Bend: without mainsail hoisted: 20mm

Sail Models

Jibs

• 0-14 TWS: LM-2 Light-Medium Jib
• 12-25 TWS: MH-2 Medium-Heavy Jib

Spinnakers

• 0-20 TWS: A2-4 AP Spinnaker
• 18-25 TWS: 4A Heavy Spinnaker

Quick Adjustments

Turns from Base Settings