Boom Vang Calculator

Calculate force requirements for boom vang or kicking strap to control leech tension

Input Parameters

Results

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Leech Tension
lb
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Vang Force Required
lb
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Purchase Needed
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Hydraulic Cylinder
lb

Reference

Leech Load = Wind_Pressure × Sail_Area × 0.3 Vang Force = Twist_Moment / (arm × sin(angle)) Typical purchase 4:1 to 16:1 for boom vang