Load-sensing ratchet block
Harken's high-load Flip-Flop Block has a low profile, lightweight pivoting lead that articulates from side to side. Its hinged construction allows for various lead angles in mainsheet systems, mast-base control lines and spinnaker halyards, keeping lines clean and close to the deck. Ratchamatic feature gives sailors the holding power of up to 15:1. Ratchet can be adjusted to higher or lower load depending on the sailor's strength, sailing style and system usage.
The Ratchamatic Flip-Flop is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase.
|Diameter||7/16 Inch or 11 mm|
|Integral Cleat||Integral Cam|
|Mount Type||Mechanical Fasteners|
|Safe Working Load||300 Pounds|
|Sheave Diameter||75 mm|
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Reviewed by 1 customer
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Comments about 75mm Carbo Ratchamatic Blocks:
We use these blocks to help get the genoa in on a 24ft racing yacht. The blocks work well and help to the extent that most of the time, winching in the sail is no longer needed. This means faster, crisp tacks. We have not yet decided upon the best setting at which the ratchet engages, but a few more races and we will find a good all round setting.