Klappluftschr.-Set30x25 cm Graupner 1311.30.25 Folding propeller series. Torsionally stiff propellers of fibre-glass-reinforced Nylon material. The new blade shape ensures optimum efficiency of these propellers. All folding propellers come complete with spinner backplate, spinner cap and aluminium clamping cone, screws and operating
instructions. The folding propellers are coloured in such a manner as to be compatible with any model. Diameter and pitch of the propellers are imprinted in each case. These folding propellers are suitable for use with electric motors and geared electric motors only. Their maximum permissable rpm indicated in the operating instructions must not be exceeded ever. If the excellent strength of GRAUPNER folding propellers is to be preserved the water contents
of 2-3% stored in the material must not be lost. For this reason avoid storage in dry rooms or in the vicinity of operatingradiators Diameter/pitch 30/25 cm 12/10
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