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.
Specs
| 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) |
| Fuel Type: |
Gas |
| 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 |
| RPM Range: |
2000-9500 |
| Stroke: |
1.02 in (26.0mm) |
| Total Weight: |
31.2 oz (0.89 kg) |
| Type: |
4-stroke |
171056
%204-Stroke%20Gas%20Engine.jpg)
