Harken 57mm Double Ratchamatic Block-Swivel

Murrays Part# 28-2634

The 57mm Harken 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.

The load-sensing Carbo Ratchamatic® has a ratchet that instantly engages when a predetermined load is reached. When unloaded, the ratchet pawl seamlessly disengages to allow the sheet to run out instantly during mark roundings and jibes. The Ratchamatic allows lightly-loaded sheets to run freely in both directions for fingertip control. The preset load threshold can be fine-tuned with an Allen wrench to suit different applications, sailing styles, and body types.

Specifications:

• Sheave Diameter: 2-1/4"
• Length: 4-9/16"
• Weight: 7.2 oz
• Shackle Pin Diameter: 1/4"
• Maximum Line Diameter: 3/8"
• Maximum Working Load: 750 lb.
• Breaking Load: 1875 lb.
• Holding power with 180 degree wrap 50 lb. (23 kg): 10:1

Harken Part# 2634