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Description
Ronstan RF55111 Series 55 Orbit Single Block with BecketRonstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting. General Range Information: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Easily fitted and
Ronstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting.
General Range Information:
- Ultra Lightweight
- Low friction 2-stage Orbital ball bearing system
- Highest working load in its class
- Easily fitted and securely retained Dyneema Link head
- Low profile and compact
- High performance cleating
- Sheave Diameter 55mm
Technical:
- Sheave Diameter 55mm
- Maximum Rope Diameter 10mm
- Maximum Working Load 500kg
- Breaking Load 1000kg
- Weight 75g
Materials:
- Ball bearings - High compression strength carbon black Acetal
- Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon
- Frame/Cheeks - Toughened, glass fibre reinforced Nylon
- Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema
Applications:
- Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
- Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
- Halyard, Vang and Backstay application on boats to 8m (26ft)
- Control line applications on larger yachts
| We recommend using the RF613S shackle to securely attach the block to the existing deck eye on your boat. This helps the block maintain maximum freedom of movement and reduces the risk of wear on the Dyneema loop due to sharp edges on the deck eye, then use the 8072 Rubber Boot to keep the block upright and provide a neat finish. See related items. |
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Exchange/Return Notes
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4.5 ★★★★★
Based on 1235 reviews
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Product Reviews
★★★★★ 5
Great Story about Native Americans before Europeans
Format: Paperback
I read this book with my kids (11,8) as part of our unit on Native Americans before colonization. They both really enjoyed it. It helped to humanize history for them and show them that although the cultural practices were different, the characters experienced some of the same feelings, relationship challenges, and personal struggles and triumphs that we experience today.
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Reviewed in the United States on October 31, 2022
★★★★★ 5
Wonderful book about pre-European North America
Format: Paperback
This is a great book. There's a massive shortage of children's books written by Natives, especially ones that give a picture of pre-European America, and if you've noticed that, THIS IS THE BOOK YOU'RE LOOKING FOR to fill that hole in your home school curriculum/child's library. It's a "boy book," but my seven year old girl got through it without any complaints except that she wanted me to read ahead so I could tell her if anything scary happened. I would say that the plot is a little slow, the main story pauses a lot for background information or traditional stories. But that's not really a complaint, I don't think it's even worth taking off one star. Almost anything by Joseph Bruchac is worth your money, and this one is no exception.
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Reviewed in the United States on May 31, 2020
★★★★★ 5
Sweet Story
Format: Hardcover
Adorable and funny, very sweet ending. If you like the other "are the worst" books, this one will fit right in.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Good book
Format: Hardcover
7 y/o grandson loved this story
This book is part of a series and funny
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great book!
Format: Hardcover
My kids love this book. It's not a super long book but long enough to give a fun storyline. Puts a fun spin on cupid.
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Reviewed in the United States on February 24, 2026