Graduate Tuning Guide

Rig Tension

Tight, measured on Jib luff wire 250 lbs.

Mast Rake

With the boat upright in sailing trim, with the main halyard weighted there should be 150-200mm of mast rake

Jib Sheeting

With the jib pulled in tight, the continuation of the jibsheet from the fairlead to the clew should divide the front of the jib 45% up the luff wire. When over powered in heavy winds move the fairlead aft to flatten the jib and open the slot between the jib and the mainsail.

Spreaders

Length 380mm from each shroud to the side of the mast. Check fore and aft positioning of the spreaders by placing a straight batten from the port spreader tip to the starboard spreader tip. Measure from the centre of the batten to the rear of the mast 165mm. To improve pointing swing the spreaders forward. To increase heavy weather boat speed swing the spreaders aft

Prebend

Check with jib only hoisted and the rig tension on.

Measure to a straight line between mast head and the black band at the gooseneck. Prebend = 25/30mm.

Class website http://www.graduatedinghy.com