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Standard Mainsheet Jammer

Allen Standard Mainsheet Jammer

Name: Standard Mainsheet Jammer
Brand: Allen

Allen have spent many hours of research and development with various boat builders to perfect the angle and height of the cleat to optimize mainsheet jamming.

Innovative light weight construction.
Aluminium arm
Dual ball race for maximum efficiency.
Optional click stops limit swivel rotation.
Line snags virtually eliminated.
Standard and high cleating angles to suit all.

A groove has been created in the arm for the location of the ball bearings;

this design prevents the lateral movement of the arm, significantly improving the play and friction associated with traditional jammers of this format. See diagram.

For use on:-

Sports boat, Keelboat, Etchell, SB3, Finn

Part	Description	Fixing Hole Size mm	Fixing Centre mm	Max Work Load Kg.	Weight gm
AL-5166	Standard height	M5	19.5 x 19.5	600	368
AL-5166-A	Standard height c/w AL-2160 ratchet block	M5	19.5 x 19.5	600	484
AL-5166-F	Standard height c/w AL-2160-F ratchet fiddle block	M5	19.5 x 19.5	600	504

Related Products

60mm Single Switchable Ratchet Block

60mm Switchable Ratchet Block with Fiddle

Strip Stainless Steel Clevis Pin D Shackles

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