Category Archives: Technical

Mainsail Cut On The Sparcraft Aftermarket Mast on the J/105

The original Hall spar on the J/105 bends primarily at the upper quarter when backstay┬áis applied. That is a universal defect in the Hall spar, and why you commonly see permanent bend and stress cracks at the hounds, and increasingly breaks.┬áIt is more frequent in windier areas like San Francisco Bay, though it happens everywhere.…
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