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Booms

Overview

X9

All Carbon Boom

X3

Aluminium Boom

X1

Aluminium Boom

Dragonfly

Aluminium Kids Boom

Features

VT-Joint

The NeilPryde VT-Joint provides a stiffer boom connection and a more responsive transmission of the sail's power while protecting the mast.

Using the VT-Joint has several key benefits:

  • Increases contact area from the boom attachment to the mast.
  • It can be used on any standard diameter mast.
  • Reduces chance of point loading.
  • Minimises 'play' between the boom and mast connection.

 

The mast cup interior of the
VT-Joint has been
carefully contoured to create a V shape.

The V shape accommodates variation in standard mast diameters without the need for a shim. Slightly thinner masts simply sit further into the V while fatter ones sit lower down. The change in shape provides a second point of contact between the cup and the mast creating a tighter connection and a greater transmission of power than ever before.

The VT-Joint is standard on all new NeilPryde booms with an oversized mast cup material composition tailored to suit each boom type:

X1 – Glass fibre reinforced injection moulding
X3 – Glass fibre reinforced injection moulding
X9 – Forged carbon composite material

 

X9 Wave Protective Head Shim

 

  • To protect carbon wear and prevent side movement of the VT-Joint.
  • Ten degrees of axial rotation, critical to accommodate wide range of boom to mast angles.
  • Replaceable part available on X9 140 and 160 sizes.
 

X9 Custom Tails

  • Customized carbon tails for Wave 140, Wave 160, Slalom and Racing booms.
  • Hollow box section tubes. Square profile.
  • Increased torsional rigidity.
  • Optimized performance / weight ratio.
 

X3 S-Shape Profile

 

In contrast to a traditional boom that has convex and straight outline sections, all X3 booms lengths have an S shape concave section at the highest loading point (the back hand section). With traditional aluminium booms, as there is more force at the backhand section, such as when landing jumps or sailing overpowered, a straight/convex

 

outline is free to bend out, making the boom feel soft and actually making the sail profile deeper as the boom gets shorter. On the "S" boom this force is applied against the concave "S" section resulting in much improved stiffness as well as keeping the sail profile stable as the boom length does not change under load.

 

X3 Forged Aluminum Head

Pressure Flow Forging – an innovative technology that allows for shaping of exceptionally stiff aluminium tubing. By applying this technology on all our X3 booms, the NeilPryde R&D team have managed to create the lightest, strongest and most rigid aluminium booms

 

available on the market. 'Pressure Flow Forging' represents a real breakthrough in boom shaping as the metal is allowed to 'flow' rather than stretch into shape. Fluid is injected at very high pressure into the aluminum tube that causes it to expand until it matches an external

 

 

female mold. This process increases the density of the aluminum in all areas and provides the ability to control wall thickness, allowing for the creation of complex shapes that result in a far stronger head. Further, we chose to put the boom arms inside the head tube and

this results in an outside diameter of the head being increased and bringing a further increase in rigidity and strength. As a final production process, this already high tech piece is heat tempered to create highest stiffness and strength.

 

VT Joint Lateral Locating
Button

Locks VT joint to the boom head and prevents side-to-side movement, while allowing articulation. Available on X3 and X9.

Twin-Pin Lever Actuated
Trim Lock Adjustment
System

Featured on all booms for ease of adjustment (except the X9 race booms). The Twin-Pin design provides optimal load distribution and a stiff connection between the boom body and tail end.

Mast Shim

 

X3 and X9 140 and 160 booms, and X1 140 and 165 booms are delivered with a clickable RDM mast shim.

Integrated Boom Lever

 

Reduced surface area. Lighter weight. Easy locking and opening. Available on X1, X3 and X9.