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Series 28 Blocks are available in a wide range of configurations and offer the primary demands in design, high performance and strength with compact design.
The ball bearing Macro range have plain black sideplates and sheaves whilst the plain bearing Nova have two-tone dark greys. The multiple head units are shown in more detail on "block features" page together with technical information on how to choose the correct block for your application.
They are ideal for control lines on dinghies to yachts. Cam arms are fixed at the optimum take off angle whilst all beckets have removable pins to make rope take off attachment easy.
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The Carbo Ratchmatic® is a load-sensing ratchet block that rolls freely in both directions under low loads, and automatically engages the ratchet as loads increase. Shifting between ratchet and light air modes is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.
Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic® cheek block mounts on either port or starboard. Holding power of 57 mm is as high as 10:1. The 75 mm up to 15:1.
For the ultimate system, mount a Ratchamatic® on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air, and ensure double holding power in heavy air.
Use the 2634 with a 402 or 403 swivel arm for a versatile two speed mainsheet system.
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Conventional ball bearing design with long lasting characteristics.
Optional aluminium sheave on roller bearings for higher loads.
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Kilogram for kilogram of working load, BB and RT Orbit Blocks%u2122 are the world%u2019s 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.
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The “Twin-halyard block” is specially made for a 2 to 1 main halyard.
The very small sheave is aluminum made with a Composite Fibre bushing.
The body is completely made in “High-resistance” stainless steel 17-4-PH.
The pin is self-locking (against unscrewing) and self-captive (indivisible from the body).
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Nautos invented the high performance plastic block in 1997 and since then the concept has been used in other brands. But the must important feature has never been matched, the functioning under average loads present in small to medium racing boats.
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This range of blocks are made out of AISI 316 stainless steel. They meet most demands from a dinghy to a 38 feet sailboat. Sheave sizes from 35x10 mm (swl 300 kg) up to 65x16 mm (swl 950 kg).
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Three sizes for lines up to 10mm dia
This robust range of stainless steel blocks have a multitude of uses on all types of sailing boats.
Highly polished side plates with flared cheeks prevent the possibility of chafing the line whilst giving added strength.
A range of jamming blocks is also available and these give the ability to make up strong powerful compact and lightweight tackles.
These are ideal for use on dinghies and dayboats for kicking straps or wherever a compact and powerful rope tackle is required.
Now supplied with our new profile natural white sheaves and available in plain or ball bearing options.
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