Harken's Carbo Ratchamatic® Blocks are load-sensing blocks that roll freely in both directions under low loads and automatically engage the ratchet as loads increase, making shifting between ratchet and light-air modes seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.
Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The 75mm Ratchamatic® provides up to a 15:1 holding power.
The eight-faceted, hard lube-anodizing aluminum sheave holds line securely.
Includes RH fasteners and mounting pad.
|Sheave Diameter||2 15/16 in||75 mm|
|Max Line Diameter||7/16 in||12 mm|
|Max Working Load||750 lb||341 kg|
|Breaking Load||3,000 lb||1,361 kg|
|Holding Power w/ 180° Wrap||15:1||15:1|
|Shackle Pin Diameter||N/A||N/A|
|Weight w/ Shackle||6.5 oz||184 g|
|Length||4 1/16 in||103 mm|