Cruising Upwind Sails

Fusion M™ Sails

Fusion M™ Sail Construction

Quantum Sails is the first sailmaker to offer a complete range of composite sails with membrane construction specifically for cruising sailors. Quantum’s Fusion M™ sails are developed using the most technically advanced design, lamination, and shaping methods in the industry—a proprietary process known as iQ Technology® . Fusion M™ cruising sails are fast, easy to handle, efficient and capable of taking you across the bay or around the world.  

Better Boat Handling with a Better Sail Shape
Fusion M™ sails are engineered as full-size membranes and designed with a fully-integrated, customized fiber network that addresses sail loading in all directions rather than along primary load paths only. To achieve the ideal shape, Quantum’s sail designers use proprietary computational tools, part of the as iQ Technology® suite, to create custom shaping, tailored on a sail-by-sail basis. The resulting sail shape lasts longer and is easy to trim through a wide range of conditions.

Longevity & Repeatability 
Our two-step lamination process results in a superior membrane that delivers a longer life compared to laminates made by single-step methods. Sail panels are completely cured before the shaping process begins, eliminating the effects of shrinkage and guaranteeing shape repeatability. 

Lightweight Fiber Options For All Needs 
Multiple fiber options are offered for Fusion M™ sails, providing a range of options for different size boats and sailing requirements. Quantum’s sail consultants can help you make the right selection based on your needs. 


 

Cruising Fusion M™ 8000 Series

Cruising Fusion M™ 8000 Series

These ultimate, high-performance sails feature a blend of carbon and Vectran® to deliver superior control over heel and weather helm while maximizing upwind performance. For added durability, these sails feature taffeta on both sides.

Boat Size

60' +

Construction

Membrane

Material

Carbon and Vectran fibers with Mylar® film and taffeta exterior on both sides.

Sail Color

Black and gold fibers with protective outer layers of white taffeta.

Strength/Weight Ratio
 
5
Ease of Trim
 
5
Control of Heel
 
5
Upwind Performance
 
5
Wind Range Versatility
 
4
UV Resistance
 
4
Reefing
 
4
Furling
 
4
Durability
 
4
Optimal Shape Retention
 
5
Cost
 
5
Sail MC 8500
BOAT LENGTH 60' +
FIBER Carbon/Vectran
Cruising Fusion M™ 6000 Series

Cruising Fusion M™ 6000 Series

The sails in this series feature all aramid fiber or an aramid/carbon blend. The fiber choice is driven primarily by boat size. In all cases, you get a lightweight Fusion M™ sail with superior, all-around performance in a range of wind conditions. Versatility is key, with excellent ease of trim, reefing, furling, and durability. For added durability, these sails feature taffeta on both sides.

Boat Size

30' - 100'

Construction

Membrane

Material

Carbon and aramid with Mylar® film and taffeta exterior both sides.

Sail Color

All black fiber with protective outer layers of white taffeta

Strength/Weight Ratio
 
5
Ease of Trim
 
5
Control of Heel
 
5
Upwind Performance
 
5
Wind Range Versatility
 
4
UV Resistance
 
4
Reefing
 
4
Furling
 
4
Durability
 
4
Optimal Shape Retention
 
5
Cost
 
4
Sail MC 6700 MC 6500 MC 6000
BOAT LENGTH 60' - 100' 40' - 70' 30' - 60'
FIBER Predominately carbon with aramid Roughly equal carbon/aramid All aramid
Cruising Fusion M™ 4000 Series

Cruising Fusion M™ 4000 Series

Designed for small to mid-size cruisers, the 4000 combines the rugged, reliable performance of polyester fiber with state-of-the-art Fusion M™ construction. For added durability, these sails feature taffeta on both sides.

Boat Size

25' - 45'

Construction

Membrane

Material

100% Polyester fiber with Mylar® film and taffeta exterior both sides.

Sail Color

All black fiber with protective outer layers of white taffeta

Strength/Weight Ratio
 
2
Ease of Trim
 
4
Control of Heel
 
2
Upwind Performance
 
2
Wind Range Versatility
 
3
UV Resistance
 
3
Reefing
 
3
Furling
 
3
Durability
 
3
Optimal Shape Retention
 
3
Cost
 
3
Sail MC 4000
BOAT LENGTH 25' - 45'
FIBER All polyester

Quantum iQ Technology®

Aero Structural Coupling

DESIGNING THE IDEAL FLYING SHAPE

Sail Shape: Using our own 3D design program, actual boat specifications and our extensive database of boat and sail types, the size and geometry of the sail are defined and a mold shape created. Sophisticated editing tools allow for the highest levels of accuracy and refinement.

Aerodynamic Analysis: Using a virtual prototype of the sail shape and computational fluid dynamic (CFD) calculations, designers compute and visualize aerodynamic forces, wind angles and velocities, and the distribution of air pressure on each side of the sail. The resulting images and data help predict performance.

Structural Analysis and Fiber Mapping: Using finite element analysis (FEA), Quantum designers visualize where the sail bends and twists and the distribution of stress and strain within the membrane. The virtual sail is attached to a rig model that takes into account the properties of the running and standing rigging and longitudinal and transverse stiffness. Data gained through in-house materials testing is added to the equation to evaluate the effects of different fiber types, amounts, and placement leading to the development of a custom fiber map.

The integration of 3D modeling, CFD and FEA (Fluid Structures Interaction) allows designers to assess and refine varying elements of the sail design leading ultimately to the optimal size, shape, structure, fiber type, and fiber layout of the finished product. Quantum’s expertise in using these tools is particularly valuable when applied to large sailing yachts, which present unique challenges due to variable weight placement and heavy loads.

INFRARED HEAT

To create the laminate, fibers are strung on the base film in a custom pattern according to the design specifications. During application, excess glue is stripped from the fibers to avoid saturation, minimize brittleness, and to achieve the highest strength to weight ratio. After the top layer of film is in place, a vacuum bagging process is used to “shrink wrap” the film around the fibers. The layers are then fused using infrared heat. Quantum’s carbon infrared emitter system is a quick and efficient heat source that is easily controllable to ensure that just the right amount of heat is applied during the laminating process depending upon the type and amount of materials being used in your sail. To fabricate modern composites, infrared heat or UV radiation is used because they quickly and homogeneously heat or cure them. It also transfers heat directly and precisely without having to contact the laminate and damage the components, and can be used in the vacuum conditions Quantum uses during lamination.

Intense Pressure

Quantum uses two-part, thermo-set adhesives, which require high heat and pressure for lamination compared to simple thermo-molded adhesives. Several tons of pressure are applied to the vacuum-bagged laminate to ensure the adhesive is evenly spread. This proprietary process squeezes the adhesive down to the thinnest possible layer and ensures the highest possible adhesive to fiber ratio.

Cross-Linked Molecular Structure

The thermo-set adhesives used in Fusion M™ sails undergo a transformation at the molecular level during lamination. The high heat and intense pressure induce polymerization—the creation of a cross linked molecular structure as the two part adhesive “kicks.” The result is a laminate with 4-5 times the sheer strength of a traditional hot-melt (thermo-molded) method.

Post-Cured Shaping

Unlike single-step lamination and shaping methods used by other sailmakers, sections of a Quantum® Fusion M™ sail are completely cured before the shaping process begins. This process eliminates the effects of shrinkage and distortion under the heat of the lamination process and guarantees repeatability. The carefully optimized aerodynamic shape of a Quantum® sail is reliably provided to each and every client, every time.

Sail Construction Details

When it comes to sail quality, small details make a big difference. Excellence and attention to detail are hallmarks of every Quantum® sail and ensure reliable performance. Click on photos for more information.

Headsail Clew

Our oversized, tear-drop-shaped corner patches minimize stretch and improve durability. The leech cord is contained in a separate protective pocket with multipart purchase for ease of adjustment.

Furling Headsail Clew

High-strength, non-corrosive stainless rings with Spectra chafe guard are anchored with webbings. This furling headsail features webbings and a protective pouch for the leech cord wrapped in Sunbrella® fabric to prevent UV damage—a feature which provides ultimate durability.

Furling Headsail Tack

Extended patching on the tack adds strength for partial furling. Roll-to reference marks ensure repeatable settings. Tack webbings replace standard rings to allow for easier furling. A foot cord prevents flutter.

Telltale Window

Telltale window and multiple sets of telltales aid trim and steering. The tapered foam luff on furling headsails provides luff tension for better sail shape when partially furled.

Furling Mainsail Clew

The oversized clew block provides maximum strength and minimum outhaul friction for in-mast furling. The leech cord lead around the clew and along the foot optimizes access for easy adjustment (can be installed to go all the way to the tack). The UV cover protects the furled sail from harmful sunrays; even the clew block webbings are completely covered to ensure long-term reliability and guard against sun damage.

Mainsail Head Details

Quantum’s cruising mainsails feature an aluminum headboard fitted with webbing and reinforced stainless steel rings (not rivets) for strength, smoothness, weight savings and durability. The luff hardware, with double luff tapes and extensive “quilting” throughout the head section provide strong, reliable attachment in one of the most highly-loaded areas of the sail.

Mainsail Batten Pockets

The batten receptacle and slide are attached to the inboard end of a full-length batten pocket with a stainless steel universal joint to insure easy hoisting and lowering while minimizing pocket maintenance. Double luff tapes and oversized reinforcement under the receptacle provide ultimate strength and reliability.

Overhead Leech Cord

The leech cord, rigged over the head and down the luff, allows for easy access at the tack.

Mainsail Tack

The mainsail tack features a webbed-in, stainless ring for simple, elegant attachment and a standard cunningham and foot cord (on loose-footed mainsails).

Mainsail Luff Reef

The luff reef features stainless steel rings. Extended webbings and a webbing handle make it easier to pull down and secure a reef tack.

Mainsail Leech Reef

Our mainsails feature oversized, multi-layer reef patches with quilted stitching for maximum strength and a smooth, flat, sail shape when reefed. The stainless steel rings, reinforced with webbing, provide reliable service for the long haul. Separate aluminum leech-cord cleat with hand stitching.

Mainsail Full Batten Details

Batten inboard fittings, with webbed-on slides, prevent battens from pushing into the mast, reducing chafe and wear. Open-pocket architecture ensures proper batten fit and allows removal of a broken batten.