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Overview:
There
are a lot of advantages to going with gas, like cleaner operation and cheaper
fuel. But Saito™ 4-stroke gas engines give modelers more, namely some of the
most impressive power-to-weight ratios in their class. The FG-21 engine is no
exception. Based on the groundbreaking Saito FG-20 engine, it packs 21cc 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.
Features:
Horizon
Hobby recommends the use of Red Line or Power Model synthetic oil only, at a
mix ratio of 16:1 – 20:1
New
valve seat design
Latest
carb technology makes for easier tuning and operating
Smaller
magnetic ignition system fits into tighter cowl installations
21cc
displacement in a 17cc case
Gasoline
engine lowers operating costs as much as 90%
Benchmark
Prop: APC 16 x 6 @ 8800 rpm
Bore:
1.26 in (32.0mm)
Carb
Type: 2-needle Saito pumped carb
Crankshaft
Threads: M8 x 1.25 mm
Cylinder
Type: AAC
Cylinders:
Single
Displacement:
1.25 cu. in. (20.52 cc)
Engine
(Only) Weight: 24.1 oz (0.69 kg)
Ignition
Weight: 4.0 oz (113 g)
Muffler
Threads: 13mm
Muffler
Type: Cast screw-on
Muffler
Weight: 2.9 oz (83 g)
Oil
Type & Content: 20:1 gas-to-oil ratio; EVOX1001Q synthetic oil recommended
Plug
Type: 1/4-32 Spark Plug (SAIG20120)
Prop
Range: 15 x 8 to 16 x 8 2-blade; 14 x 9 to 15 x 7 3-blade
Recommended
Fuel: Gasoline
RPM
Range: 2000-9500
Stroke:
1.02 in (26.0mm)
Total
Weight: 31.2 oz (0.89 kg)