SDM mast for high-performance windsurf sails
Loftsails Team Edition IV C100 SDM is the most advanced SDM mast in the brand's range. It is designed for sails where fast response, profile stability, and quick recovery after every gust are essential.
The standard SDM diameter provides high structural stiffness and strong support for the sail profile. The mast is particularly suited to slalom, race, and freerace setups, where precise rig behavior translates into acceleration, control, and stability at high speed.
T700 and T800 carbon fibre construction
The mast is made from a combination of T700 and T800 carbon fibres. Using two types of carbon helps achieve low weight, high elasticity, and suitable resistance to the loads generated during windsurfing.
The mast uses pre-preg material, with fibres pre-impregnated using a precisely controlled amount of resin. Compared with conventional wet lay-up construction, this process produces a more uniform structure and reduces excess resin that would otherwise increase mast weight.
Autoclave curing
The construction is cured in an autoclave under controlled pressure and high temperature. This process improves bonding between the carbon layers, increases tensile strength, and helps achieve consistent bend characteristics.
As a result, the mast responds quickly to changes in load, while the sail works more efficiently during gusts, pumping, and acceleration. This is particularly important in sails whose profiles depend on precisely controlled mast tension.
Constant Curve bend profile
Loftsails Team Edition IV C100 SDM features a Constant Curve bend characteristic. The base bend value is 64%, while the top is 76%, matching the bend profile used in Loftsails sails.
The correct bend curve helps maintain the intended sail draft, proper leech behavior, and tuning range. Each mast is checked to reduce variation between individual units and sizes.
Low weight and fast reflex
The 460 cm version weighs approximately 1.95 kg. Low weight reduces rig inertia, making the setup easier to handle during maneuvers, waterstarts, and dynamic sailing.
The high carbon content also improves reflex, allowing the mast to return quickly to its original shape after bending. The sail regains a stable profile faster, helping maintain drive and control in variable wind.
Mast bag included
The mast comes with a protective bag, making storage and transport between spots or during trips easier.
Who is it for?
Loftsails Team Edition IV C100 SDM is designed for advanced windsurfers, racers, and riders using high-performance Loftsails sails. It is a suitable choice when precise sail behavior, low rig weight, and maintaining the designer's intended mast characteristics are priorities.
Before purchasing, check the recommended mast length, diameter, and bend characteristics specified by the sail manufacturer.
Features
Loftsails mast manufacturing standards
Loftsails masts are manufactured using only the highest-grade materials and pre-preg (fiber cloth that’s pre-impregnated with resin) construction methods that are highly consistent for quality control and superior to traditional ‘wet’ layup processes that do no guarantee even resin transfer, strength and performance. Loftsails use superior T800 & T700 carbon fiber in their masts. T800 is the optimum fiber when under strain and elongation and compression and also delivers superior response action that enhances sails so well. T700 has even more superior resin absorption and consistency and in fact Loftsails leading Team Edition masts use both fabrics for the ultimate blend of quality and performance.
Accurate materials specifaction
The CAD plotter accurately cuts all composite raw materials used in the process. This is vital for consistency of weight control and performance.
Taking shape mandrels
The right mandrel for each model is then chosen so that the required taper, thickness, bend curve and many other characteristics specified for each model can be produced.
Layup and dressing
For confidentiality reasons we cannot show Loftsails’ precise, classified techniques used in the next stages. These steps involve rolling the plotted composite materials onto the mandrel with a closely guarded process on how the unique inner and compression layups are formed and secretive method for how the ferrules are integrated. The stickers are applied at this stage though!
Taping
External finishing such as protective basalt layers and durable finishing tape are applied to protect from camber wear, heat and impact.
Curing
The mast is cooked in an autoclave. It’s vital to closely monitor and precisely control the curation process at various stages for the most consistent results.
QC
Quality Control checks are made such as bend curve measurement, strength under load and impact. Final finishing inspections are then completed before packaging. Next stop – the beach!
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