Allen Keyball Moulding With Wide Spreader Plate Shipping_Standard The Aerovane features a built-in

The Aerovane features a built-in counterweight which ensures accurate indication of apparent wind angle

Sheave 57 mm Length  83 mm Weight  71 g Maximum Line  10 mm Fasteners  M4 mm  Maximum Working Load  227 kg Breaking Load  907 kg Holding Power 10:1

Sheave 22 mm Length  51 mm Weight  57 g Maximum Line  6 mm Maximum Working Load  227 kg  Breaking Load  544 kg

but cannot withstand high loads

Allen Keyball Moulding With Wide Spreader Plate Shipping_Standard The Aerovane features a built-inMoulding with wide plate to suit spreader bar harnesses This is designed to work with the Allen Keyball Trapeze System as seen on the video guide For many years the Allen development team were keen to design a trapeze system that improves the safety of the sport and reduces the risk of entrapment by the traditional hook on trapeze harness. Designer Julian Bethwaite had also been thinking along the same lines and had produced a prototype of the Keyball