Graupner Rare G 26cc Petrol Engine (with Dustbin Muffler) Part No. 1903

These engines have been developed and built specifically for model flying by a team of specialists. Both engines feature multiple ballraces. The electronic ignition system with integral retard makes the engines very easy to start, and no great force is required. The G 26 is an ideal power plant for two-metre class aerobatic models. The G 57 might well be the lightest high-torque engine in its class, making it an excellent option for F3A-X models. However, it is also a fine choice for other power models weighing up to 13 kg all-up, and for aero-towing tugs of similar weight and up to 2.80 m span. The G 57 in particular incorporates technologies and manufacturing processes developed for F-1 racing, and both engines have been subjected to an extended programme of static and practical testing. In conjunction with suitable exhaust systems these engines develop a level of power which is normally the province of engines of much greater swept capacity. The engines are operated using a petrol / oil mix (2-stroke mixture, 1 : 50), while a 4-cell battery of at least 800 mAh capacity is required for the ignition system. The set includes operating instructions, ignition system, propeller fixings and exhaust gasket. We recommend that these engines should be run using the exhaust systems developed specially for them.

Important note:

these engines require specialist knowledge and must be handled with the greatest care. Please read the safety notes included in the operating instructions.

Specification

Capacity 26 cc

Bore 33 mm

Stroke 30 mm

Speed range 1300 ~ 7200 rpm

Electronic ignition 4.8 V

Weight approx. 1096 g