Series 55 Ratchet Orbit Block - Single - Swivel Head - Auto & Manual
Automatic Ratchet Block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Awesome Ratchet Block Holding Power
Quite simply, Ronstan Ratchet Orbit Blocks have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
- Up to 20:1 holding power
- Smooth easing of sheets
- High performance cleating
- Swivel shackle head for unlimited block rotation.
- Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
- Automatic & manual ratchet block
- Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 8M(26')
- Halyard, vang and backstay applications on boats to 8M(26')
- Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks)
- Sheave: Hard anodised Aluminium
- Ball Bearings: High compression strength carbon black Aceetal
- Frame/Cheeks: Toughened, glass fiber reinforced Nylon
- Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
- Head fitting: grade 316 stainless steel
Sheave Ø: 55mm(2")
Max. Rope Ø: 10mm(1/2")
B. L.: 650kg(1,430lbs)
Warranty : 1 Year Warranty
Orders placed before 3pm AEST will be dispatched on the same day. There may be dispatch delays during busy sale periods*
We offer Free Next Business Day Delivery to capital cities within the Express Post Network.
Shipping to metro areas takes 1-3 business days.
Shipping to regional rural areas outside of the Express Post Network may take 2-5 business days.
At this stage we do not offer same day delivery.
ORDER VALUE DELIVERY COST Under $100 AUD $9.95 AUD for Express Shipping Over $100 AUD Free Express Shipping
PUBLIC HOLIDAYS & WEEKENDS
Black Swallow does not operate on public holidays or weekends. All orders placed on a public holiday or weekend will be shipped on the next business day.
Items that are a pre-order will be labelled as a pre-order with estimated dispatch times stated. Once your order is ready for dispatch, your parcel will be shipped via Australia Post Express Post.
We do not split-ship. If your order contains both in-stock and pre-order items, your entire order will be shipped out together once all items are in-stock. We recommend that you place separate orders for in-stock and pre-order items so that your entire order is not held up.
To ensure you get the lowest prices and fastest shipping, some products are shipped directly from our marketplace sellers. These products are marked clearly with “This item ships directly from Marketplace seller”. The delivery speed will vary depending on the seller and their location. Your order may be split shipped if you are ordering from the Black Swallow Marketplace.