Thunder Tiger: 3D spirit

Article Abstract:

Thunder TigerEs 3D Spirit is the latest almost-ready-to-fly (ARF) model and has many features that enhance its flight performance including oversize, counter-balanced control surfaces for quick maneuvering and lightweight construction for an optimum power-to weight ratio. The plane is well suited to intermediate pilots who want to enter the world of 3D maneuvers and to advanced pilots looking for a medium-size aerobat.

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Sig mfg.: Four-Star 40

Article Abstract:

The Sig Four-Star Series of sport planes includes the 40 and 60 sizes in kit and ARF versions and a 120-size and is a tough, easy to build and fly sport aerobatle airplane. Its engine installation, radio installation, finishing details, its performance and the conclusions made are described briefly.

Sig Four-Star Series (Model airplane)

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O.S. Max .46 AX: A classic poerplant-now even better

Article Abstract:

Great Planes Model Distributors Co.Es O.S. Max .46AX features Schnuerle porting, front rotary-valve induction and a side exhaust. Several interesting characteristics of the models such as connecting rod, porting system and carburetor are described.

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