Ronstan RF56100 55mm Auto / Manual Ratchet Block Swivel Head

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.

APPLICATIONS

• Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel
• boats to 8m(26ft).
• Halyard, vang and backstay applications on boats to 8m (26ft).
• Spinnaker sheets on sportsboats and small keel boats (lateral lead 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®
• Head fitting: grade 316 stainless steel.
• Ball Bearings: High compression strength carbon black Acetal.
• Sheave : Hard anodised aluminium.

SPECIFICATIONS

• Sheave Ø 55 mm
• Max. Rope Ø 10 mm
• Max. Cable Ø mm
• Pin Ø 5 mm
• M.W.L. 250 kg
• B. L. 650 kg
• Weight 82 g