Allen Dual Arm Mainsheet Jammer

Dual arm mainsheet jammer.

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

Fitted with aluminium ball bearing cleats AL-0076 & AL-0077
Innovative light weight construction.
Dual ball race for maximum efficiency.
Optional click stops limit swivel rotation.
Line snags virtually eliminated.
Standard and high cleating angles to suit all.
c/w standup spring, spring guard & low profile shackle

A groove had 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:-

Etchells, Fireballs, sportsboats, SB3, Finn

spec sheet Mainsheet Jammer Allen

	Part	Description	Max Line Ø mm	Fix hole size mm	Fixing Centre mm	Max Work Load Kg	Weight gm	RRP Inc VAT	Unit
	AL-5166-DUAL	Dual arm with lower cleat	10	M5	19.5 x 19.5	600	513	£371.76	EACH
	AL-5166-DUAL-A	Dual arm with lower cleat & AL-2160 ratchet block	10	M5	19.5 x 19.5	600	620	£480.53	EACH