The ALPHA 4 has a LTF/DHV 1 and EN-B certification. When fitted with paramotor risers sizes 25, 28, and 31 are certified for paramotoring by the German Ultralight Association DULV. Convertible risers for the ALPHA 4 The optional motor risers for the ALPHA 4 are convertible, so they can be used for free flying as well. These risers have two hangpoints, about 10 cms apart. The higher ones are set up for motorised flight. (see picture) The trimmers make it possible to get the best takeoff behaviour in light wind as well as compensate for the turning effect of the propeller. Cruising speed can also be trimmed out at any time. For free flight the trimmers can be led through the carabiners and secured out of the way. The ALPHA 4 motor risers also have a traditional speed system, which provides for a useful speed increase. (see picture) DULV-Certification When fitted with the motor risers the DULV has certified the ALPHA 4 for unaccelerated flight in sizes 25, 28 and 31. The permitted weight ranges are shown below. The DULV standard requires a compatibility test for each model size. The LTF/DHV certificate and EN approval for the ALPHA 4 are also valid for free flight with motor risers provided that the lower hang points are used and the trimmers are stowed. Weight Ranges The following table shows the DULV (powered) and LTF/DHV (freeflight) permitted weight ranges for the Alpha 4 Paramotor: DULV LTF/DHV ALPHA 4/25 85 – 130 kg 65 – 88 kg ALPHA 4/28 100 – 149 kg 78 – 106 kg ALPHA 4/31 110 – 149 kg 96 – 130 kg * Takeoff weight (pilot, glider, equipment and motor) Motor Compatibility The necessary test flights were carried out with a standard engine. Other motors can be used after the manufacturer or the DULV have carried out a compatibility and handling test. Tests are running with the following engines: PAP ROS 125 Walkerjet XC W130 Fresh Breeze Simonini Standard Colours Orange (Red-White-Orange) Petrol (Orange-White-Petrol) Red (Gold-White-Red) Steel (Gold-Petrol-Steel) Turkis (Petrol-White-Turkis) Note: the displayed colours may differ slightly from the original colours due to individual monitor settings.
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