J/109


North Sails' J/109 Tuning Guide

Base Settings for 10-15 knots True Wind Speed


Headstay Mast Butt
Upper Shroud V1 Lower Shroud D1 Intermediate Shroud D2
2220mm 480mm
55 Units 45 Units 24 Units




Headstay is measured using swing arc method. Use jib halyard pulled downto top of black band on mast - swing forward to mark headstay. Measuredistance from mark on headstay to deck at stem.
The mast butt is measured from forward face ofmast to aft edge of bulkhead. This corresponds to forward most positionin the slider.


Shroud Adjustments Matrix

True Wind
Speed
Upper
Shroud
V1
Lower
Shroud
D1
Intermediate
Shroud D2
0-10 knots
11-20 knots
20+ knots
-1 turn
Base 55
+2 turns
-1 turn
Base 45
+1/2 a turn
-1 turn
Base 24
+2 turns

Contact the J/109 Experts:

Nigel Young
North Sails Ireland
+ 353 872514434
nigel@irl.northsails.com
James Knight
North Sails UK
+ 44 2392 525 588
prof@irl.northsails.com