Harken 29mm Bullet Double Block and Becket Sale_20plus whilst preventing the lateral movement

whilst preventing the lateral movement of the arm

Designer Julian Bethwaite had also been thinking along the same lines and had produced a prototype of the Keyball trapeze system

Sheave 57 mm Length  121 mm Weight  431 g Shackle Pin  6 mm Maximum Line  10 mm  Maximum Working Load  680 kg Breaking Load  1700 kg

or pivot so lines have a fairlead under load

Can be repositioned for a customised fit

Harken 29mm Bullet Double Block and Becket Sale_20plus whilst preventing the lateral movementLow friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Sheave 29 mm Length 89 mm Weight 78 g Shackle Pin 5 mm Maximum Line 8 mm Maximum Working Load 181 kg Breaking Load 907 kg