The WING-MASTER-10 is a 1:7 scale replica of an ultralight aircraft. The kit was available from 1984. The Graupner order number at the time was 4910.

The ultralight is controlled via elevator and rudder and has the option of controlling a throttle carburetor via an additional rudder machine. The recommended engine is the OS-MAX-10FSR.

The light and stable frame construction consists of hard aluminum tubes that are connected via polyamide plastic parts.

There is a continuous central tube on top on which the tail unit, the landing gear with pilot cage, the RC box for servos, receiver and battery pack as well as the engine mount with combustion engine are mounted.

The original kit included two finished, three-coloured wing halves made of hard foam with a fuel-resistant surface. The OHS multi-layer construction guaranteed high strength with low weight. This meant that the sophisticated Eppler 182 profile could be manufactured with a true-to-shape and a trailing edge twist.

I was one of the first customers to buy the model and managed to get it into the air after a few attempts. However, the flight characteristics were not very good-natured, not suitable for a beginner in motor flying and ground take-offs were practically impossible because the nose gear could not be controlled. Once the model was in the air, it was surprisingly fast, and slow overflights were accordingly difficult. For these reasons, the model disappeared into the basement until 2014 and then saw the light of day again in stages (2014 / 2019) as part of the digital restoration (although without a pilot dummy). Actually, however, the aim was to derive an electric version with more good-natured flight characteristics and more 'scale'. Let's see what comes of it...

Anyone who has flown the model or still has pictures and memories is welcome here to contact me.

For the CAD designers, I should mention that I set up a parametric wing construction as part of the digital restoration. This allows you to design model parts with a wide variety of wing profiles, from propellers to complexly set wings, very quickly. I will report on this in the 'Know-how' section...