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Produktbeschreibung:
The boom is what we feel with our hands when sailing. It’s what makes us feel the wind in the sail. A alu boom does not have to have only a good price, a carbon boom does not only have to feel light and stiff. There is a lot more behind the boom which is more important than these factors.
It needs to bring comfort and safety. It has to be practical. With the Point-7 Black Team the main focus to start from was the curve of the boom. This is not about having a curve of the new generation as many might call it. It’s about of having a curve which allows pure front and back arm to sit in a comfortable position while sailing, automatically positioning the sail in the right angle for the wind to enter and exit. This stance varies with the wind strength and windsurfing discipline. The needs of a wave boom curve is very different from the curve for a slalom boom. Also a slalom boom for strong wind, is very different from a boom for light wind slalom. One needs to offer control and the other power. You can have the lightest and stiffest boom, but if this main fact is wrong then, the boom will feel heavy and uncomfortable.
The stiffness on carbon boom are also very important. The right mix between reflex and comfort need to be found. This can be done by a good mix between the flexibility of the front head and the tubes. The weight needs to be front oriented on the boom, leaving the tail end of the boom light. A heavy tail-end will make a light boom in general feel even more heavy then it really is.
We worked a lot on diameters. Giving a grip of 25mmon the wave boom and 28mm on the slalom boom. This way less power is needed to hold on for the forearms, allowing a lot more hours on the water even if not super fit.
Yes weight is important and needs to be in the right place. Stiffness is important and needs to bring comfort. The alu boom needs to be ready to hold on to 2 years of heavy hammering and not deform in gusts.
These are only a few facts on what the development team, together with the black team, has put into their books.
Monocoque carbon tail, 58cm extension, with moulded holes. 2cm easy adjustments settings. 25mm reduced diameter carbon monocoque body where the hands sit, offering a soft and sanded anti slip pro grip: Less hand strength needed for a firm grip on the boom. The tubes are having an octagonal shape for firmer grip. The back part of the tubes increase to 29 offering a stiffer and lighter weight. Double push pin for a stiffer connection between boom body and tail end. Easy positioning marks for the harness lines. Double push pin to provide constant load distribution and a stiff connection between the boom body and tail extension. Wide head fitting on the mast for extra stiffness. Front head tilts according to fitting height on the mast, but does not tilt from side to side. With very little rope tension, the head does not slip on the mast. Fits perfect RDM adaptors.
|
Boom |
Max Lenght |
Size Interval |
Arm Diameter |
Weight |
|---|---|---|---|---|
|
140 |
200 |
2 |
25 |
- |
|
150 |
210 |
2 |
25 |
- |
|
170 |
230 |
2 |
28 |
- |
|
190 |
250 |
2 |
28 |
- |
Rugged aluminium and carbon windsurfing booms for comfortable, efficient sailing across all windsurf disciplinesWith kids' styles, traditional ‘R’ (regular) and modern ‘C' outline shapes - and options on tube section, grip diameter, and tail width - Unifiber have booms to suit all budgets and preferences.There are many points to consider when purchasing a new boom, whether it’s a replacement or your very first one!Let's discuss the key factors to consider when choosing a boom...
The choice between aluminium and carbon is mostly budget related. Aluminium booms generally retail between 100€ and 300€, drastically less than carbon booms.Aluminium booms are available in different constructions and configurations, all using the same grade T8 aluminium alloy. A stronger, monocoque shaped boom body provides stiffness and durability. The Heavy Duty (HD) monocoque body has increased tube wall thickness to get even closer to the stability found in carbon booms. Additionally, our booms are available as arms-only to be retrofitted to other boom heads.Carbon booms range between 500€ and 1000€. They are much stiffer than aluminium booms, so when you are sailing they deliver instant responsiveness to your rig, and help to maintain better sail profile leading to performance gains. Unifiber produces a Limited Edition (LE) carbon boom, that uses a special composite lay-up technique that optimizes cost of production, resulting in a great price to quality ratio. The rest of the Unifiber line of carbon booms represents absolute top of the line, with similar shape and parts as LE booms but using the highest spec carbon tubes to ensure best possible performance.Boom stiffness is one of the most important performance indicators. The stiffer the boom, the less deformation of the sail profile. Especially in overpowered conditions stiffer booms provide better top end control and responsiveness.
The diameter of the boom tubes impacts upon comfort and stiffness. Larger diameter booms are typically more stiff, resulting in improved performance. Many people with 'average' sized hands find the most comfortable boom tube diameter to be around 27/28mm, but this is a matter for personal preference.
When using bigger sail sizes, typically around 6.8 and larger, it is sensible to consider a boom with a wider tail. Wide tail booms ensure the sail profile will not be disturbed when sailing with low outhaul tension, as is often the case in lighter wind conditions. In contrast, narrow tail booms - particularly if used with bigger sails - can touch and deform the sail profile, resulting in sub-optimal performance and potentially compromising sail durability.
Traditional 'R' shaped boom accommodate deeper sail profiles, so are particularly relevant when considering larger sail sizes. A disadvantage is that they require the mast (front) hand to have the wrist slightly bent. ‘C’ shape booms have ergonomic advantages since they allow the lead arm to take a more natural wrist position. This applies to straight line blasting, but can also make for more comfortable gybing and other manoeuvres too.
When you are sailing in powered up conditions, the forces acting on your boom attempt to make it wider, and consequently shorter. A shorter boom allows the sail to balloon - which is exactly what you don't want when a big gust hits. That's why you want a stiff boom.
Increasing the boom body wall thickness increases the stiffness of the boom. Thicker wall thicknesses also make for a stronger and more durable boom. The downside of increased wall thickness is of course added weight. We rate all our booms for stiffness with a star system. One * star is least stiff; a seven star ******* rating represents maximum amount of stiffness Unifiber
Most booms are equipped with an axial moving boom head. A moving head is necessary because the angle between mast and boom is variable - depending upon the sail design, sailor's preferred boom height, and other factors.
Accommodating for this variation in boom angle - by allowing axial movement - is very important because it prevents point loading between the mast and boom head.
By evenly distributing the forces between mast and boom, the durability and reliability of both will be much increased.
A well designed axially mobile boom head will also facilitate sail rigging and boom height adjustments.
When buying a new boom check for mast diameter compatibility. Most booms will work with a Standard Diameter Mast (SDM), but might need an adapter to work with a Reduced Diameter Mast (RDM).
Some boom heads can adapt to both RDM and SDM masts, without requiring a separate adapter.
Other boom clamps don't naturally adapt to RDM mast sizes, but have removable adaptors to make this possible.
For booms that don't fit RDM and that don't include RDM adaptors, a collar type adaptor can be fitted to the mast instead, which brings the diameter up to SDM size.
Most windsurf sails quote an outhaul setting range that corresponds to the boom length setting required.
But do consider that there is slight variation in how the different sail manufacturers arrive at their recommended measurements, and the actual setting required will depends on conditions, boom height and other factors.
When using a boom at the minimum or close to the minimum setting it will add a lot of stiffness, increasing the performance of your rig.
When a boom is used near the limit of its extension range it will be less stiff. For this reason most Unifiber aluminium booms extend a maximum of 50cm, while the - inherently stiffer - Unifiber carbon booms can be extended up to 60cm.
There are two main options for the boom tail: a wider diameter tail that goes outside the boom body, or a narrower diameter tail that goes inside.
The tail inside option allows for the length adjustment lock to be fixed at the end of the boom body - which allows for simple operation. A disadvantage is that the tail itself - being of narrower diameter - is less stiff.
The tail outside option requires a wider diameter boom tail, which adds to stiffness. A disadvantage of this system is that locating the holes for the length adjustment lock can sometimes be difficult.
For shorter sized booms the tail outside option is not offered, as the tail would interfere with the back hand during normal sailing.
For quick rigging, the loop-loop-go (loop-to-loop) option is most convenient. This is the best option for medium-sized and smaller sails, and will help get you rigged and out on the water quickly!
The pulley-option provides a solution for use on booms fitted with an adjustable outhaul system. This is a great feature for bigger sails and racing.
