Versatile high-carbon RDM mast
Loftsails Vision IV C75 RDM is designed for windsurfers looking for a noticeable improvement in sail response without requiring a full 100% carbon competition mast. The 75% carbon content provides quick recovery after bending and reduces rig weight while maintaining the durability required for frequent use.
The mast is suitable for recreational freeride, performance-oriented sessions, and wave sailing. It is a versatile option for intermediate and advanced riders looking for a balance of response, durability, and price.
T700 and T800 carbon fibres
The mast is made using T700 and T800 carbon fibres. Their combination provides suitable elasticity, low weight, and resistance to the loads generated during windsurfing.
The high carbon content improves mast reflex, allowing the sail to recover its intended profile more quickly after a gust, jump landing, or impact with chop. This results in a more direct rig response, more stable power delivery, and easier acceleration.
Durable pre-preg construction
Loftsails Vision IV C75 RDM is manufactured using pre-preg materials. The fibres are pre-impregnated with a controlled amount of resin, allowing for a consistent laminate and reducing variation between individual masts.
The construction is developed to handle the demands of wave sailing and intensive use. It also provides suitable resistance to point loads and friction generated during sail operation.
Constant Curve bend profile
The mast features a Constant Curve bend characteristic, with 64% at the base and 76% at the top. This bend curve is matched to Loftsails sails and helps maintain the intended sail draft and leech behavior.
A correctly matched mast allows the sail to use its full tuning range. The profile remains stable while the upper section of the sail can respond appropriately to changes in wind strength.
Controlled mast parameters
The precise manufacturing process reduces variation in performance characteristics between individual masts. Each unit is checked and controlled to maintain the intended bend and stiffness parameters.
This is particularly important with high-performance sails, where even small differences in mast behavior can affect draft position, stability, and wind range.
RDM diameter
The reduced diameter makes the mast easier to grip during maneuvers and waterstarts. RDM construction also provides a favorable wall-thickness-to-diameter ratio, improving resistance to point impacts.
RDM provides a slightly softer and more controlled rig feel compared with a similar SDM mast. This is particularly useful in wave sailing, choppy water, and variable wind conditions.
Mast bag included
The mast is supplied with a protective bag for easier storage and transport between spots or during trips.
Who is it for?
Loftsails Vision IV C75 RDM is designed for intermediate and advanced windsurfers riding freeride, bump & jump, and wave. It is suited to riders looking for faster response and lower rig weight than C50 masts while retaining greater durability and a more accessible price than C100 models.
Before purchasing, check the sail manufacturer's recommended mast length, diameter, IMCS stiffness, and bend characteristics.
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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