Mainsheet Systems

Allen's design team spent many hours of research and development improving the range of aluminium mainsheet jammers.  

The Allen mainsheet jammer range uses our World leading cold forged bearing system which has a ball locating groove for smooth rotation whilst preventing the lateral movement of the arm.  

Antals systems are particularly suitable for the mainsheet control on Yachts.

2 Sizes are available: Size 60 for boats up to 36 ft and lines up to Ø=10 mm, main sheave with Cam-Cleat Ø=60 mm, secondary sheave Ø=50 mm, safe working load SWL = 800 kg. 

Size 75 for boats up to 40 ft and lines up to Ø=12 mm, main sheave with Cam-Cleat Ø=75 mm, secondary sheave Ø=60 mm, safe working load SWL = 1000 kg. All sheaves are made of HRM resin with 2 races of ball bearings.

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