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Tangent - Contest-line

The models in this series are all intended for the demanding, well-informed model pilot, and are designed with exceptional quality and performance in the foreground. These designs also feature many ingenious solutions to technical problems.

Without exception these models are highly practical, and have undergone extensive testing, modification and refinement under extreme conditions by experts before being released onto the market. The result is a series of models all of which have received excellent reviews in the model press.

Some important - but not obvious - features of the

Tangent Contest-line range:

Epoxy fuselages with a hard surface, reinforced in many cases with glass tape, rovings and carbon

Wings with Intro (internal) leading edges, and amply proportioned full-contact spars for immense reserves of strength. In some cases the flying surfaces are carbon reinforced. All wing panels are machine-sanded right to the trailing edge.

Some types feature fully lined control surface recesses under the wing skins. Floating wing joiners, as used in full-size aviation.

The proven MULTIlock system for securing the wings and tail panels

Electrical connections

Wing / fuselage prepared for installation

Optimised aileron and camber-changing flap linkages, protected by servo mounting frames with screw-fitting covers and fairings.

Unique technical solutions are also employed for the elevator linkage, ensuring a durable control system with precise action.

The development of the Contest-Line

The Contest-Line has been developed specifically for the experienced and highly skilled modeller. With each new model and each new development we aim to satisfy the special needs of this target group.

For example, we currently supply Contest-Line models in uncovered form. This gives the modeller the opportunity to finish the model simply using self-adhesive or iron-on film, or to upgrade it with a GRP skin and a painted finish.

The essential feature of these sophisticated models is the carbon reinforcement of the wings, which has made a major contribution to improved performance. Carbon significantly increases the wings’ stiffness in bending and torsion, and this in turn helps to provide more precise flying characteristics. Much higher tension is possible on winch launches, resulting in higher releases. Higher airspeeds can also be achieved safely with torsionally stiff wings.

The current state of the art is represented by the Alpina 4001 PRO, whose fuselage features special reinforcements, including carbon in the tail boom and extra glass cloth in the front fuselage section. The result is probably one of the strongest production fuselages on the market. The kit’s level of pre-fabrication is also enhanced: all fuselage openings are pre-cut and fine-trimmed, and the AMT crank is factory-fitted.

Wing spars with factory-installed joiner system

Solid, hardwood-reinforced spars are combined with a carbon laminate under the wing skins to form a high-strength assembly which ensures optimum strength and evenly distributed forces.

The Intro leading edge also helps to protect the wing in minor collisions by distributing the shock loads over the full wing.

Carbon reinforcement (example: Alpina)
Carbon reinforcement
Carbon rovings Fully lined recesses

In Master Edition models the wing’s torsional strength is increased considerably by a leading edge box section featuring a layer of carbon cloth laid at 45°. The stiffer wings mean that higher airspeeds can safely be achieved. Bending strength is significantly increased by graduated carbon rovings fitted over the spar and under the carbon cloth. This enables the model to achieve higher release altitudes on the winch, and smaller-radius pull-outs in aerobatic flying.