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  • RPU Power ModulesRPU stands for Rubber Power Unit — a compact and interchangeable propulsion module for model airplanes. Designed with simplicity and flexibility in mind, the RPU allows model builders to use one power unit across multiple balsa sheet models.
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  • 3005 Las aparencias engañan RPU 20

    3005 Las aparencias engañan RPU 20

    —

    by

    Robert Schlickewitz
    in Series 3000 – Sheet Wing, Profile Fuselage RPU Models

    A light, low-wing balsa model with a stubby design and solid flight performance. Built for use with an RPU 20 — a detachable rubber power unit made from common materials like skewers, rubber, and Velcro. The same RPU can be used across multiple models. The name, in Spanish, means: Appearances are deceiving.

  • 3004 Still life in purple RPU 20

    3004 Still life in purple RPU 20

    —

    by

    Robert Schlickewitz
    in Series 3000 – Sheet Wing, Profile Fuselage RPU Models

    Still life in purple RPU 20 is a small, lightweight twin-boom balsa model designed for use with the RPU 20 rubber power unit. Easy to build and finished in striking colors, it offers stable flight performance when equipped with a 4-inch airscrew and less powerful brown rubber. Its compact 32 cm wingspan and 36 g ready-to-fly weight…

  • 3003 Borboleta maior RPU 30

    3003 Borboleta maior RPU 30

    —

    by

    Robert Schlickewitz
    in Series 3000 – Sheet Wing, Profile Fuselage RPU Models

    Borboleta maior RPU 30 is a high-wing balsa monoplane with a V-tail, designed for use with the RPU 30 power unit. Larger than its “menor” counterpart, it is easy to build from few parts and delivers smooth flight performance. Velcro-mounted and balanced for reliable launches, it’s ideal for mid-sized models. The name, Portuguese for “big…

  • 3002 Borboleta menor RPU 20

    3002 Borboleta menor RPU 20

    —

    by

    Robert Schlickewitz
    in Series 3000 – Sheet Wing, Profile Fuselage RPU Models

    Borboleta menor RPU 20 is a lightweight, high-wing balsa monoplane with a V-tail and clean flight performance, designed for use with the RPU 20 rubber power unit. Easy to build from few parts, the model is compatible with Velcro-mounted propulsion and maintains stable handling in the air. Its name, Portuguese for “small butterfly,” reflects the…

  • 3001 Dewoitine D. 520 RPU 30

    3001 Dewoitine D. 520 RPU 30

    —

    by

    Robert Schlickewitz
    in Series 3000 – Sheet Wing, Profile Fuselage RPU Models

    The Dewoitine D.520 was a French fighter aircraft of the Second World War. First flight took place in October 1938 and only in 1953 the plane was retired. Operators of the Dewoitine were not only France but Bulgaria, Italy and Nazigermany. The D.520 had a wingspan of 10.2 m / 33 ft 6 in and…

  • 3000 Power Modules RPU 20, RPU 30, RPU 40

    3000 Power Modules RPU 20, RPU 30, RPU 40

    —

    by

    Robert Schlickewitz
    in Power Modules RPU

    The RPU (Rubber Power Unit) system is a modular, Velcro-attached power module for rubber-powered balsa models, designed to be reused across different aircraft. Built from simple materials like skewers or bamboo, balsa, piano wire, and a plastic airscrew, it comes in three sizes—RPU 20, RPU 30, and RPU 40—suitable for wingspans from 30 up to…

  • 2017 Falan Filan

    2017 Falan Filan

    —

    by

    Robert Schlickewitz
    in Series 2000 – Sheet Wing, Profile Fuselage Rubber-Powered Models

    Two lightweight, low-wing balsa monoplanes built on the same basic design. Falan flies best with a 4-inch prop and thin rubber; Filan excels with a 6-inch airscrew and stronger rubber, offering a fast climb and smooth glide. Falan Filan is Turkish slang for “this and that.”

  • 2016 Nord 1000 Pingouin (Mess. Bf-108)

    2016 Nord 1000 Pingouin (Mess. Bf-108)

    —

    by

    Robert Schlickewitz
    in Series 2000 – Sheet Wing, Profile Fuselage Rubber-Powered Models

    The sports and touring aircraft Nord 1000 Pingouin was a licence version of the German Mess. Bf-108 produced by French state-owned SNCAN manufacturer from 1944 until after the end of World War II. It was at the begin equipped with a German Argus As 10C piston engine later to be replaced by the French made…

  • 2015 Schehak Tandemeinsitzer rubb.

    2015 Schehak Tandemeinsitzer rubb.

    —

    by

    Robert Schlickewitz
    in Series 2000 – Sheet Wing, Profile Fuselage Rubber-Powered Models

    The projected Schehak single seat tandem sports and leisure plane was never built as its designer D. Schehak from Hamburg/Germany died prematurely. A three-view of the plane and some basic information were given in the 19/1937 issue of „Flugsport“ magazine. These drawings were the basis for my model. Powerplant would have been a 20 hp…

  • 2014 Hargol

    2014 Hargol

    —

    by

    Robert Schlickewitz
    in Series 2000 – Sheet Wing, Profile Fuselage Rubber-Powered Models

    A compact balsa monoplane with clean lines, easy construction, and strong flight performance. Designed for use with 4–6 inch airscrews and either brown or black rubber. Hargol (חַרגוֹל) is Hebrew for “grasshopper.”

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