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RONSTAN #RF46101, 40MM SINGLE/RATCHET/AUTO ORBIT BLOCK

The Chandlery #:  054_HRF46101
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RONSTAN #RF46101, 40MM SINGLE/RATCHET/AUTO ORBIT BLOCK

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Ronstan 40 mm single auto ratchet orbit block
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Automatic and manual ratchet options

Now you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models*

With automatic models, 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.

Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors.

* Selected Series 40 models.

 
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 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor.

The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have 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.

 
Simple and secure attachment

The Dyneemaź 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 Dyneemaź/Spectraź strops, webbing and carbon connection points - much more so than steel loop tops or shackles.

 
Smooth easing of sheets

With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.

 
Low profile stand-up kit allows  0° or 90° alignment

Stand-up kits feature a clatter-free rubber boot.  You can attach the Dyneemaź link so that the block is aligned with the stand-up base or across it.  It's a neat low-profile solution which allows full articulation.

 


Smooth Easing of sheets


With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages.  When engaged, and with manual models, the sheave cross-hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.


Materials

Hard anodised Aluminium

High compression strength carbon black Acetal

Toughened, glass fibre reinforced Nylon

UV stabilised, multi-strand impregnated SK75 Dyneemaź


Ball Bearing Orbit Block - BALL BEARING

LESS FRICTION, ULTIMATE PERFORMANCE

Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available.
This is achieved through all-composite reinforced polymer materials and a Dyneemaź rope link head. Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fibre-reinforced composites in the block head, cleat arms and beckets.

  • Ultra lightweight.
  • Highest working load in its class.
  • Simple and secure attachment. The Dyneemaź Link is easily fitted and is retained securely by a moulded retainer clip.
  • Low profile and compact.
  • Fiddle block flexibility.
  • High performance cleating.
  • Used for sheets and control lines on dinghies, sports boats and small keel boats. Control lines on larger yachts.

Series 20, Series 30, Series 40, Series 55, Series 70

Lightweight

- Kilogram for kilogram of working load, BB and RT Orbit Blocks are the world's lightest. To gain peak performance, we engineered out the heavy steel load straps, head post, shackle, full-length fasteners, and cleating accessories. Through extensive research and development, we replaced virtually all metal components with high-tech polymers and fibre equivalents. 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.

Simple and secure attachment

- The Dyneemaź 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 Dyneemaź/Spectraź strops, webbing and carbon connection points - much more so than steel loop tops or shackles.

Highest working load in its class

- The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range. The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modeled to be stress optimised. The Dyneemaź Link is produced from FSE Robline SK75 fibre, which is 10 times h6er and lighter than steel, and provides the final connection from the block to the load point.

Low profile and compact

- The flexible Dyneemaź Link provides controlled rotation and 0° or 90° orientation. It connects directly to the head of the block rather than to an intermediate head post. This reduces weight and gives the lowest possible profile while allowing full articulation. Beckets have been carefully designed to minimise height.

Orbit Features

Sheave 40 mm

Max. rope 9 mm
M.W.L. 175 kg
B.L. 500 kg
Wieght 35 g

Manufacturer Info
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  • Extra Info
  • This product was added to our catalog on Tuesday 08 May, 2012.
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