UpRoar J-80, Manual

Page: 14 / 31

14
Main Sail
Uproar
Sail Configuration
The J/80 has a lot of sail area for its size and therefore can become very over pressed in strong winds.
Uproar has a full main with a single slab reefing point and a 103-7% roller furling Genoa. Be prepared to reef
the main early and set up the reef at the dock before you go . The saying "twist is fast" is always true and the
telltales on the main should always be flying free. In strong winds a J/80 is more like a dinghy and needs much
flatter sails. This means that the mainsail must be deep and powerful in its form to power the boat in light winds,
but at the same time able to be completely flattened in strong. In winds between 6 and 12 knots our design is at
its maximum power. In lighter winds the leech has to be open to help flow around the sail. In harder winds the
leech has to be opened again but now because crew weight no longer will hold the boat upright so power must be
drained off.
-North Sails Sail Trim Guide