Ronstan’s ILCA® mainsheet blocks provide the perfect balance of strength, performance, and reliability Ronstan is known for. They feature a 2-stage bearing system which minimises friction and gives sailors ultimate control while trimming. The cheeks and housings are lightweight yet strong and made from toughened glass fibre reinforced nylon. All stainless steel fixings and rivets are grade 316 stainless steel. The linked traveller block uses the same 2-stage bearing for the mainsheet sheave while the smaller traveller sheave has a simple AP bearing to maintain enough friction to help keep the block close in the leeward corner when sailing upwind under load. Several concepts of the articulation point of the linked traveller block were tried and tested by ILCA® sailors to ensure the best design was achieved for optimum articulation.
Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.
All Purpose versions are a great choice for durability and a long service life. They feature self-lubricating acetal polymer sheaves running on polished stainless steel races and perform equally well with dynamic loads and static loads.
Mainsheet blocks have a 2-stage bearing system with stainless steel hub.
Fast rolling speed with little friction.
Traveller block: Main sheave features 2-stage bearing sheave. Small sheave is simple AP bearing.
Ronstan’s ILCA® lower vang unit is the new benchmark in design and performance. Thoroughly tested on the water by leading ILCA® sailors, the vang unit features optimised geometry to minimise line chafe and friction which provides a purchase advantage, and easy cleating and releasing to stay in full control when playing the vang from any angle while inboard or hiking. The primary purchase sheave features Ronstan’s high load, low friction, stainless steel HHL sheave. Geometry of the cleat arm pivot point is close to the clevis pin attachment to minimise stress on the mast attachment point.
High Load versions are designed specifically for any application where high
dynamic or static loads are expected. They feature a high strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.