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57mm Carbo Ratchamatic Flip-Flop Block with Cam


Model # 9485731 | Mfg # 2145
Ships directly from the vendor

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.

57mm Carbo Ratchamatic Flip-Flop Block with Cam

Becket No Becket
Diameter 3/8 Inch or 10 mm
Direction Any
Integral Cleat Integral Cam
Mount Type Mechanical Fasteners
Ratchet Ratcheting
Safe Working Load 300 Pounds
Sheave Diameter 57 mm
Type Single Pivoting

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by PowerReviews
Harken57mm Carbo Ratchamatic Blocks

(based on 1 review)

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Reviewed by 1 customer

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Sheeting in used to be hard

By Coppertop

from Lake Arrowhead, CA

Verified Buyer

Comments about 57mm Carbo Ratchamatic Blocks:

I am a 46 female novice racing an MC Scow. This block has made sheeting in and holding my main so much easier! My arms used to ache after racing. Now I am able to now get my blocks to meet without straining. I only wish that the swivel lock would stay locked. I currently have it aft, with the mainsheet directed down to a lower block. Perhaps if I rotated the swivel, the main wouldn't contact it as much and inadvertently unlock it. None the less, I still wouldn't change it out...I love this ratchamatic!

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