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Harken 75mm Carbo Ratchamatics

Harken 75mm Carbo Ratchamatics

The Carbo Ratchamatic is a load-sensing ratchet block that rolls freely in both directions under low loads, and automatically engages the ratchet as loads increase. Shifting between ratchet and light air modes is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.

Sheave is Hardkote-anodized with eight faces for secure line holding. Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic ckeek block mounts on either port or starboard.

For the ultimate system, mount a Ratchamatic on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air, and ensure double holding power in heavy air.

Part Description Length Weight w/ Shackle Shackle Pin Max Line Safe Working Load Breaking Strength Holding Power
w/ 180˚ Wrap (50lb)
in mm oz g in mm in mm lb kg lb kg
H2680 Single 5 3/8 137 8.4 238 1/4 6 7/16 12 750 341 3000 1361 15:1
H2681 Single, Becket 6 1/2 165 9.0 255 1/4 6 7/16 12 750 341 3000 1361 15:1
H2682 Cheek 4 1/6 103 6.5 184 - - 7/16 12 750 341 3000 1361 15:1
H2683 Single, 150 Cam-Matic 5 7/16 138 15.5 439 1/4 6 7/16 12 300 136 750 341 15:1
H2684 Single, 150 Cam-Matic, Becket 6 1/2 165 15.5 439 1/4 6 7/16 12 600 272 1500 680 15:1
H2685 Triple, 150 Cam-Matic 5 3/8 137 31.0 879 5/16 8 7/16 12 1500 680 3750 1700 15:1
H2686 Triple, 150 Cam-Matic, Becket 6 1/2 165 31.6 896 5/16 8 7/16 12 1800 816 4500 2041 15:1
H2687 Triple, 150 Cam-Matic, Becket, 57mm block 6 1/2 165 34.7 984 5/16 8 7/16 12 1800 816 4500 2041 15:1


H2680 75mm Carbo Ratchamatic Single Price: $126.54 H2681 75mm Carbo Ratchamatic Single, Becket Price: $137.37
H2682 75mm Carbo Ratchamatic Cheek Price: $127.51 H2683 75mm Carbo Ratchamatic Single, 150 Cam-Matic Price: $236.90
H2684 75mm Carbo Ratchamatic Single, 150 Cam-Matic, Becket Price: $247.72 H2685 75mm Carbo Ratchamatic Triple, 150 Cam-Matic Price: $365.42
H2686 75mm Carbo Ratchamatic Triple, 150 Cam-Matic, Becket Price: $376.24 H2687 75mm Carbo Ratchamatic Triple, Cam-Matic, Becket, 57mm Block Price: $424.60

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