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RONSTANSeries 55 Ratchet Orbit Blocks

RONSTAN

Series 55 Ratchet Orbit Blocks

Practical Sailor's Ratchet Block Click-Off rated Ronstan's Orbit block "Overall, the most impressive with its grip, versatility, and lightweight design."

The ultimate, next-generation, high-performance blocks incorporate unique innovations including radically new bearing systems, super light, all-composite materials, innovative new head fittings and a sleek design for the highest strength to weight ratio available. The precision design provides the optimum number of ball bearings in critically loaded areas, eliminates them in inactive areas and reduces ineffective mass, creating the "2-stage" bearing system for durability and low friction performance. The flexible Dyneema® rope link is a product of the latest trends in grand prix ocean racing and provides a more flexible, lighter weight and lower profile solution than traditional shackles. It can be set at a 0 or 90 degree orientation, provides stress-free articulation without allowing the block to over-rotate, and is locked in place with a security clip that doesn’t require tools to fit. The Dyneema link is also more compatible with carbon, Dyneema and webbing connection points than steel loop tops or shackles.

  • Sheave: Carbon-fiber reinforced, PTFE-impregnated engineered nylon
  • Bearings: High-compression–strength Carbon Black Acetal; Stage 2 Bearing: Glass fiber-reinforced, MoS2-impregnated engineered nylon
  • Sheave Size: 2-5/32" (55mm)
  • Line Diameter: 3/8" (10mm) max.
  • Cheek Material/Finish: Toughened glass fiber-reinforced nylon
  • Shackle/Strap Type: UV-stabilized, multi-strand Dyneema rope link
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Ratchet Orbit Block, Auto & Manual, Single/Swivel Head, 550lb. SWL, 2.9oz. 11075371 RF56100
Ships when available.

$79.99

Ratchet Orbit Block, Cheek, Clockwise, 550lb. SWL, 2.7oz. 8738783 RF56151
In stock online.

$67.99

Ratchet Orbit Block, Cheek, Counter-Clockwise, 550lb. SWL, 2.7oz. 8738791 RF56151A
In stock online.

$67.99

Ratchet Orbit Block, Triple/Becket/Cleat, 550lb. SWL 11075389 RF56330B
In stock online.

$197.99

Product Description

Practical Sailor's Ratchet Block Click-Off rated Ronstan's Orbit block "Overall, the most impressive with its grip, versatility, and lightweight design."

The ultimate, next-generation, high-performance blocks incorporate unique innovations including radically new bearing systems, super light, all-composite materials, innovative new head fittings and a sleek design for the highest strength to weight ratio available. The precision design provides the optimum number of ball bearings in critically loaded areas, eliminates them in inactive areas and reduces ineffective mass, creating the "2-stage" bearing system for durability and low friction performance. The flexible Dyneema® rope link is a product of the latest trends in grand prix ocean racing and provides a more flexible, lighter weight and lower profile solution than traditional shackles. It can be set at a 0 or 90 degree orientation, provides stress-free articulation without allowing the block to over-rotate, and is locked in place with a security clip that doesn’t require tools to fit. The Dyneema link is also more compatible with carbon, Dyneema and webbing connection points than steel loop tops or shackles.

  • Sheave: Carbon-fiber reinforced, PTFE-impregnated engineered nylon
  • Bearings: High-compression–strength Carbon Black Acetal; Stage 2 Bearing: Glass fiber-reinforced, MoS2-impregnated engineered nylon
  • Sheave Size: 2-5/32" (55mm)
  • Line Diameter: 3/8" (10mm) max.
  • Cheek Material/Finish: Toughened glass fiber-reinforced nylon
  • Shackle/Strap Type: UV-stabilized, multi-strand Dyneema rope link

Specs

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REVIEW SNAPSHOT®

by PowerReviews
RonstanSeries 55 Ratchet Orbit Blocks
 
5.0

(based on 2 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

Reviewed by 2 customers

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5.0

Awesome spinnaker blocks for racing

By KBNJ

from NJ

About Me Advanced

Pros

  • Awesome control
  • Easy To Install
  • Easy To Use
  • Lightweight

Cons

    Best Uses

    • Sailing

    Comments about Series 55 Ratchet Orbit Blocks:

    Couldn't imagine a better block for a 27' racer/cruiser spinnaker sheet and guy leads. Just leave in auto mode and they free-wheel with very light loads and ratchet under heavy loads. The ratchet is VERY effective - I've found myself in moderate air with no gloves and no rope burns, no sore muscles (NOT recommended, though!). Also very lightweight. (They look good, too, if that matters to you)

    (0 of 1 customers found this review helpful)

     
    5.0

    Love it

    By zandy

    from Sydney

    About Me Advanced

    Verified Buyer

    Pros

    • Attractive Design
    • Easy To Use
    • Quality Construction

    Cons

      Best Uses

      • Sailing
      • Small Boats

      Comments about Series 55 Ratchet Orbit Blocks:

      Very clean design.
      Light + Strong.

      Displaying reviews 1-2

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      Questions about this Product?
      1 (800) 262-8464