Mast Heel: Back of mast heel to aft bulkhead should be 7’ 2" or 2185mm

Shroud Tension:  250 – 350 lbs (don’t exceed 400lbs)

Mast Rake: Top of mast to mainsheet track should be 22’ 2" or 6755mm

Spreader Length: Mast to shroud should be 17" or 430mm

Spreader Deflection: Back of mast to a straight line between Spreader tips 7" or 178mm

N.B. Lighter crews try more, say 8" or 205mm

Prebend: Back of mast to main halyard held taut to gooseneck should be 1.25" or 32mm.

NOTES ON SETTING UP

1. When your rig is correctly set up, when sailing upwind fully sheeted in, as you luff into the wind all the jib telltales should start to lift simultaneously. If they do not, check the angle of the jib sheet. When fully sheeted an imaginary line extending the jib sheet from where it is attached to the bottom back corner of the jib (clew), should meet the front edge (luff) of the jib about half way up, and should approximately bisect the angle of the clew.

If the top telltale breaks first, the jib sheet is not steep enough. Rake the mast further forward or move the jib fairleads forward on the thwart.

If the bottom telltale breaks first, the jib sheet is too steep. Rake the mast further back or move the jib fairleads back on the thwart.

N.B. The class rules do permit the jib fairleads to be fixed to the thwart wherever you like. But they must be fixed, not adjustable.

2.    If the slot is correct, it is OK for the luff of the mainsail to show a flicker of backwinding.

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