User Manual

23
SPECIFICATIONS
Disp 20.52cc (1.25 cu in)
Bore 31.7mm (1.24 in)
Stroke 26mm (1.02 in)
Weight (Engine only) 21.9 oz (620 g)
Weight (Muffler only) 2.9 oz (80 g)
Weight (Ignition only) 3.7 oz (105 g)
Total weight (all inclusive) 28.5 oz (805 g)
Crankshaft M8x1.25
Cylinder AAC
Fuel Efficiency 15cc/minute
Propeller Size Dia. 15–16 x Pitch 6–8, Dia. 17 x Pitch 6
Benchmark Propeller APC 16 x 6 @ 8,900 rpm
Practical Ground RPM Range 1,700–9,500
FG-21 Outside Dimensions (mm)
FG-21 Dimensions and Specifications
Fuel consumption
Fuel consumption depends on the load of the propeller.
During actual flight, fuel consumption increases slightly.
Electrical usage of ignition system
Approximately 125mAh for 15 minutes.
Ignition Operating Voltage: 4.8–9.0 volts.
Fuel: Gasoline-Oil mix of 20:1 (20:1 is recommended for
break-in and continuous operation).
Oil: The use of only 100% synthetic oil is recommended
such as our Evolution Oil (EVOX1001Q)