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Continue ShoppingHARKEN 57mm Ratchamatic Flip-Flop Block, 2144
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Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows a variety of lead angles.
Lightweight, machined 6061-T6 aluminum cheeks pivot on fiber-reinforced plastic chocks. Sheave runs exclusively on a ball-bearing system for fast trim and release under any load. Ball bearings, sheaves, and sideplates are UV-stabilized with carbon black for maximum protection.
Ratchamatic block versions roll freely in both directions under low loads and automatically engage a ratchet mechanism as loads increase, giving sailors a holding power of up to 15:1. The ratchet engagement can be adjusted to a higher or lower load depending on the sailor’s strength, sailing style, and system usage.
Reversible cam arms adjust and lock in a range of positions for crew accessibility and accommodation of changing lead angles.
Note: Special Order Only
FEATURES
SPECS
Sheave | 57 mm (2 1/4") | Maximum Working Load | 500 lbs. (227 kg) |
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Length | 110 mm (4 5/16") | Breaking Load | 1000 lbs. (554 kg) |
Height | 66 mm (2 5/8") | Maximum Line | 10 mm (3/8") |
Width | 50 mm (2") | Weight | 5.5 oz (156 g) |
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