Saito FG-21 - 21cc 4-Stroke Gas Engine
SAITO FG-21 is a 4-stroke gasoline engine exclusively for model airplanes which is designed with emphasis on high performance, durability, and weight saving. This engine is modified based on existing FG-20 gasoline engine, equipped with renewed ignition system. For the airplane on which FA-125 is installed, FG-21 can be replaced easily with minimal change such as fuel tank and lines to gasoline resistant ones.Specs:
- Displacement: 20.9 cc
- Applications: 4-stroke glow 1.00-1.10 class
- Bore: 32.0 mm
- Stroke: 26.0 mm
- Motor weight: 690 g
- Muffler weight: 83 g
- Ignition system weight: 113 g
- Engine mount weight: 156 g
- Practical RPM: 2000-9500
- Max RPM on Ground (stationary): 9000-10.000
- Propeller: APC 15x8" - 16x8"
- Static thrust: aprox 3-4 kg
- Fuel: Regular gasoline & oil = 20:1 (volume ratio)
- Fuel consumption: aprox 15 cc/min (@ full throttle 8800 rpm)
- Battery for ignition system: 6-8V with more than 1Ah is recommended
Recommended gasoline fuel oils:
- Klotz Original TechniPlate®
- Klotz R/C Modelube®
Thrust info:
- Engine: FG-21
- Propeller: 16x8
- Static Thrust: 4.7kg
- Max weight for hover capability: 4.7kg
- Rec. Max weight for sportsman flying: 6.7kg
- Max weight for possible take-off: 9.4kg
