Block single Ratchet Orbit cheek anti-clockwise auto/ manual 55mm

Ronstan

Article number :  RF56151A

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70.31 CHF 70.31 CHF 70.31 CHF

76.00 CHF

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    RF56151A

    Automatic and Manual ratchet in one block
    Up to 20:1 holding power
    Easily fitted and securely retained Dyneema® Link head
    Smooth easing of sheets
    High performance cleating


    Sheave Ø 55 mm
    Max. Rope Ø 10 mm
    Max. Cable Ø - mm
    Pin Ø - mm
    M.W.L. 250 kg
    B. L. 700 kg
    Weight 76 g

    Product Information
    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.
    * Selected Series 55 models.

    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 patented 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.
    Click to view full Practical Sailor's Ratchet Click-off article

    Simple and secure attachment
    The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins. The system is compatible with Dyneema®/Spectra® strops, webbing and caron connection points - much more so than steel loop tops or shackles. In auto mode, the sheet runs out smoothly and freely sas soon as the ratchet mechanism disengages. In manual mode, the sheave cross-hole geomtry eliminates the 'shuddering' run-out that you can expect from traditional v-groove ratchet blocks.

    Materials
    Sheave: Anodised Aluminium
    Ball Bearings: High compression strength carbon black Aceetal
    Frame/Cheeks: Toughened, glass fibre reinforced Nylon
    Rope Link: UV stabilised, multi-strand impregnated SK75 Dyneema®