Prepreg Construction and Fiber Volume Control
Every carbon reinforcement used in the V3 Atmo Team Series foils is manufactured using prepreg technology, meaning the fibers are pre-impregnated with resin before layup. We do not use dry fabrics wetted inside the mold, as that process cannot achieve the level of precision required for a foil.
Prepreg construction allows precise control of the fiber-to-resin ratio, directly influencing weight, compaction, stiffness, shear strength, torsional rigidity, final laminate thickness, mechanical consistency, and curing quality.
In any composite structure, performance depends primarily on the fiber volume fraction—the actual proportion of structural fibers relative to the resin. The fibers carry the loads; the resin simply binds them together, transfers stresses between them, and stabilizes the laminate without adding unnecessary weight.
Too much resin makes the wing heavier while reducing its mechanical efficiency. Too little resin creates dry spots, weak bonding, and structural defects. The objective is therefore not to "add resin for strength," but to place precisely the right amount of resin around fibers that are correctly oriented.
GONG pushes this level of control even further by producing our own prepregs in-house. We select our dry fibers, impregnate them with the resin specifically formulated for each mechanical program, control the resin content, store the material under refrigerated conditions, then CNC-cut and lay up every ply according to our proprietary stacking schedules.
This capability is exceptionally rare in the foil industry. It requires genuine composite manufacturing infrastructure, strict storage procedures, tightly controlled processing times, advanced materials expertise, and production volumes large enough to justify these investments. It allows us to define the composite itself instead of adapting our designs to standard industrial materials. Every material is engineered specifically for the wing, its intended use, our calculations, our testing, the expected loads, and the riding feel we want to achieve.