Skip to content Skip to navigation menu
Video

RONSTAN
Series 30 Orbit Single Block with Swivel

$26.95

Model # 10468528 | Mfg # RF35100D
In stock online.

Orbit Blocks™ represent the future of racing sailboat hardware. The choice of the world's best racing sailors, they offer a no-compromise solution. Their flexible lashing and Dyneema® Link technology mirrors the latest trends in development classes and grand prix ocean racing. The product of meticulous engineering, they deliver the ultimate in strength, weight savings and control.

Advanced fiber and polymer technology that is up to ten times stronger than steel delivers lighter and more compact blocks. Through 3D modeling, Finite Element stress analysis and mould flow analysis, Ronstan engineers made sure that everything performs both in the laboratory and in the real world. Months of on-water testing by elite sailors pushed the product to their limits. After further optimization and fine-tuning, they're now ready for you to test!

Series 30 Orbit Applications:

  • Mainsheet systems and spinnaker sheets on dinghies to 16 ft.
  • Halyard, vang and backstay applications on boats to 16 ft.
  • Control line applications on larger boats

Materials:

  • Sheave: High-compression–strength carbon black Acetal
  • Ball Bearings: High-compression-strength Acetal
  • Frame/Cheeks: Toughened, glass-fiber-reinforced Nylon
  • Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
  • Self-lubricating Nylatron® sheave and full contact bearing for high dynamic loads

Series 30 Orbit Single Block with Swivel

Becket No Becket
Diameter 5/16 Inch or 8 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 661 Pounds
Sheave Diameter 1 3/16 Inches or 30 mm
Type Single
Weight 1.1 Ounces

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

REVIEW SNAPSHOT®

by PowerReviews
RonstanSeries 30 Orbit Blocks
 
4.7

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Attractive (3)
  • Easy to install (3)
  • Easy to use (3)
  • Well built / quality (3)

Cons

No Cons

Best Uses

No Best Uses

Reviewed by 3 customers

Displaying reviews 1-3

Back to top

 
5.0

Good quality and pefect for the application

By JP

from Hampstead, NC

About Me Casual/ Recreational

Verified Buyer

Pros

  • Attractive Design
  • Easy To Install
  • Easy To Use
  • Quality Construction

Cons

    Best Uses

    • Personal Watercraft
    • Sailing
    • Small Boats

    Comments about Series 30 Orbit Blocks:

    This was used to rig a sail on my Hobie kayak which has a sail but no rigging to speak of. I needed better control of the sail in such a narrow situation to facilitate fast reaction times to change in wind speed and direction. This quick release, in conjunction with a small pulley does the job nicely.

    • Was this a gift?:
    • No
     
    4.0

    Good block for the $$

    By Rick

    from Detroit, MI

    About Me Advanced

    Verified Buyer

    Pros

    • Attractive Design
    • Easy To Install
    • Easy To Use
    • Quality Construction

    Cons

      Best Uses

      • Sailing

      Comments about Series 30 Orbit Blocks:

      good block for the price and easy to use in many places.

      (1 of 1 customers found this review helpful)

       
      5.0

      Perfect replacement!

      By Waz

      from Selah, WA

      About Me Beginner

      Verified Reviewer

      Pros

      • Attractive Design
      • Easy To Install
      • Easy To Use
      • Quality Construction

      Cons

        Best Uses

        • Small Boats

        Comments about Series 30 Orbit Blocks:

        I needed to replace the old, thin and worn out mainsheet blocks on my 70's Minifish. What a great way to bringthe boat into the 21st century. The best lookingthing on her!

        Displaying reviews 1-3

        Back to top