Saito FG-21 Petrol EngineProduct Features
The FG-21 runs with any good quality forecourt petrol, mixed 20:1 with oil.
Latest carb technology makes for easier tuning and operating.
21cc displacement in a 17cc case.
New valve seat design.
New, smaller magnetic ignition system fits into tighter cowl installations.
High quality professional finish adds scale realism.Product Description
There are a lot of advantages to going with Petrol, like cleaner operation and cheaper fuel. But Saito 4-stroke Petrol engines give modelers more; namely some of the most impressive power-to-weight ratios in their class. The new FG-21 is no exception. Based on the groundbreaking Saito FG-20, it packs 21cc's of power into a 17cc case. Accompanying the extra displacement is the latest carb technology, updated exhaust valve seats and, of course, the sweet 4-stroke sound Saito engines are famous for.
The carburettor features a diaphragm pump that is very tolerant of differences in fuel levels, making it unfussy regarding fuel tank positioning. This means you can now fit the tank to give the best centre of gravity for the airframe rather than worrying about the best position to keep the engine running. The pump also allows for smooth running during advanced aerobatic manoeuvres.Specifications
Stroke Volume: 20.91cc
Weight: Body - Approx 690g, Muffler - Approx 83g, Ignition System - Approx 113g, Mount - Approx 156g
Practical RPM: 2,000 ~ 9,500
Fuel: Petrol(Gasoline):Oil = 20:1 (Volume Ratio)
Fuel Flow: Approx 15cc/min (at full throttle, approx 8,800 rpm) Fuel flow variess depends upon propeller load. More fuel flow with larger load and less fuel with smaller (In actual flight, fuel flow somewhat increases.
Prop: 15 x 8 ~ 16 x 6in
Static Thrust: 3~4kgf (8,800RPM)Download Manual