RONSTAN Fiddle Blocks - Overview
Ronstan Core Fiddle Blocks
Ronstan Core Blocks™ Series 60 Fiddle Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Fiddle blocks incorporate an integrated becket through the hub of the lower sheave, and are ideal for creating simple vang and mainsheet systems up to 4:1 on sailboats to 12m (40ft).
Ronstan All Purpose Fiddle Blocks
Ronstan Series All purpose (AP) fiddle blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.These fiddle blocks are ideal for fine tune mainsheet tackles, cunninghams, boom vangs, backstays and other control line purchase systems.
Ronstan Small Boat Fiddle Block
Kilogram for kilogram of working load, Ronstan Ball Bearing Orbit Fiddle Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub.Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block. These fiddle blocks are ideal for fine tune mainsheet tackles, cunninghams, boom vangs, backstays and other control line purchase systems.
Ronstan Big Boat Fiddle Blocks
Ronstan Roller Ball Orbit Fiddle blocks™ are a no-compromise product range developed to meet the demands and expectation of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners. The Orbit sheave has captive Acetal ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon® needles – achieving a substantially higher strength-to-weight ratio. Spreacher blocks can accommodate a second spinnaker sheet for sail changed or for an outboart genoa sheet for racing.
Ronstan Utility Fiddle Blocks
The RONSTAN Fiddle Blocks have stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase. These blocks can be used as a vang, cunningham and trapeze retriever systems on dinghies, leech line tackles, bunk adjusters etc on larger yachts