Ronstan RF56151A Series 55 RT Orbit Block – Cheek Anti-Clockwise Rotation

Now you can enjoy the flexibility of setting up your ratchet blocks
to suit yourself with the Ronstan RF56151A Series 55 RT
Orbit Block – Cheek Anti-Clockwise Rotation. This
automatic ratchet block features a ratchet mechanism that 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.

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 patented sheave cross-hole geometry. Its holding power
is up to 21:1. The unique sheave design has 12 gripping faces which
directly resist loaded line movement. The 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.

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.
The sheet runs out smoothly and freely as soon as the ratchet
mechanism disengages.

Ronstan RF56151A Series 55 RT Orbit Block – Cheek
Anti-Clockwise Rotation Features:

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

Ronstan RF56151A Series 55 RT Orbit Block – Cheek
Anti-Clockwise Rotation Specifications:

• Sheave diameter: 55 mm
• Max. Rope diameter: 10 mm
• M.W.L.: 250 kg
• B. L.: 700 kg
• Weight: 76 g
• Materials:
  • Sheave: Hard 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