Ronstan Series 55 Ratchet Orbit Block(TM) - Single - Swivel Head - Auto & Manual
Ronstan Series 55 Ratchet Orbit Block(TM) - Single - Swivel Head - Auto & Manual, B Series 55 Ratchet Orbit Block 153 - Single - Swivel Head - Auto Manual B br br B Automatic Ratchet Block B br 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 br br br B Awesome Ratchet Block Holding Power B br Quite simply Ronstan Ratchet Orbit Blocks 153 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 br br B Features B br UL LI Up to 20 1 holding power LI Smooth easing of sheets LI High performance cleating LI Swivel shackle head for unlimited block rotation LI Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points LI Automatic manual ratchet block LI UL br br B Applications B br UL LI Mainsheet systems and spinnaker sheets on dinghies sportsboats and small keel boats to 8M 26 LI Halyard vang and backstay applications on boats to 8M 26 LI Spinnaker sheets on sportsboats and small keel boats lateral lead blocks LI UL br br B Materials B br UL LI Sheave Hard anodised Aluminium LI Ball Bearings High compression strength carbon black Aceetal LI Frame Cheeks Toughened glass fiber reinforced Nylon LI Rope Link UV stabilized multi-strand impregnated SK75 Dyneema reg LI Head fitting grade 316 stainless steel LI UL br br B Specifications B br B Sheave 216 B 55mm 2 br B Max Rope 216 B 10mm 1 2 br B M W L B 250kg 550lbs br B B L B 650kg 1 430lbs br B Weight B 82g 2 9oz --- cis2 m2hrm5Rq ---