Loftsails' most advanced RDM mast
Loftsails Team Edition IV C100 RDM is the top RDM model in the manufacturer's range. It is designed for riders who expect low weight, fast response, and consistent bend characteristics from their mast.
The reduced RDM diameter provides a comfortable grip, makes the rig easier to control, and increases resistance to point impacts. At the same time, the 100% carbon construction delivers the fast reflex required for high-performance sails.
T700 and T800 carbon fibres
The mast is made from a combination of T700 and T800 carbon fibres. The materials are selected to achieve the right balance between low weight, elasticity, and structural durability.
T800 fibres provide high stiffness and fast mast response, while T700 fibres support resistance to loads and damage caused by regular use. This combination maintains performance-oriented characteristics without excessively compromising durability.
Pre-preg technology and autoclave curing
The mast is manufactured using pre-preg technology. The fibres are pre-impregnated with a controlled amount of resin, resulting in a consistent, lightweight laminate without unnecessary excess resin.
The mast is then cured in an autoclave. High temperature and pressure allow the carbon layers to bond precisely, increasing resistance to tensile loads, friction, and the stresses generated as the mast bends.
Constant Curve and consistent sail performance
The Constant Curve bend characteristic is matched to the profiles used in Loftsails sails. The base bend value is 64%, while the top is 76%, helping the mast support a stable sail draft and correct leech behavior.
Each mast is checked and controlled for its bend characteristics. This reduces variation between individual masts, which is particularly important for high-performance sails that require precise rig component matching.
Fast reflex in variable wind
The high carbon content allows the mast to return quickly to its original shape after bending. The sail responds efficiently to gusts, maintains drive, and stabilizes its profile quickly after temporary overload.
This is particularly important during pumping, acceleration, riding through choppy water, and sailing in variable wind. The rig responds without noticeable delay, making it easier to maintain control and speed.
RDM diameter
The RDM construction is narrower than an SDM mast. This makes the mast easier to grip during maneuvers and waterstarts, while the relatively thicker walls improve resistance to point impacts.
An RDM mast can also provide a softer and more controlled rig feel. Final compatibility depends on the sail manufacturer's recommendations, so the required mast length, diameter, and IMCS stiffness should always be checked before purchase.
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 RDM is designed for advanced windsurfers and riders using high-performance sails that require a Constant Curve mast. It is suited to situations where low weight, fast reflex, controlled sail profile behavior, and precise mast-to-sail compatibility are important.
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!
For instant answer - open the chat and ask your question. We're active 9.00-17.00 CET.
Is it afterhours? No problem - leave us a message and we’ll respond early the next day.
+48 61 641 70 22
For those who prefer phone calls - that's our number. You can give us a ring between 9.00-17.00 CET.
Facebook
Instagram
YouTube
