Harken 75mm SB Ratchamatic Flip Flop Block
Harken's Flip-Flop Blocks with Ratchamatics enable sailors to hand-hold loaded lines and offer a balance between holding power and controlled adjustment.
These low-profile blocks are lightweight and can be used for halyard, mainsheet, and spinnaker sheet leads. The Small Boat Flip-Flop blocks pivot around the line axis to keep line close to the deck. Their hinged construction allows for a variety of lead angles. The sheave runs exclusively on a ball bearing system for fast trim and release under any load.
Ratchamatic 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 load adjusted to complement the sailor's strength, sailing style, and system usage.
|Breaking Load (lbs)||1500|
|Breaking Load (kg)||680|
|Max Line Size (in)||7/16|
|Max Line Size (mm)||12|
|Safe Working Load (lbs)||750|
|Safe Working Load (kg)||340|
|Sheave Diameter (in)||3|
|Sheave Diameter (mm)||75|