Key Features
- 10 X 4 prop at 10,500 rpm
- Smaller case design for lighter weight
- Nearly the same case size as a .30, but packs more power
Overview
As far as modelers are concerned, there’s no sound like the sweet sound of a SaitoTM engine. Saito’s latest wonder is the FA-40a, which shares nearly the same case size as the FA-30, but packs a whole lot more punch. All this power coupled with solid Saito craftsmanship and the standard 3-year warranty is sure to make this potent little 4-stroke one of the year’s most anticipated engines. As with most Saito engines, a special Golden Knight edition is available with a gloss black case and gold plated rocker covers.
- 10 X 4 prop at 10,500 rpm
- Smaller case design for lighter weight
- Nearly the same case size as a .30, but packs more power
Product Specifications
| Prop Range | 10×7 – 11×6 |
| Benchmark Prop | 11×5 APC @ 10600 |
| Displacement | .40 cu. in. (6.5 cc) |
| Cylinders | Single |
| Cylinder Type | AAC |
| Engine (Only) Weight | 10.24 oz |
| Muffler Type | 2 – Piece |
| Crankshaft Threads | 1/4 x 28 |
| Muffler Weight | 0.40 oz |
| Bore | 0.86 in (22.0 mm) |
| Crankshaft Type | Ball Bearing |
| Power Type | Glow |
| Stroke | 0.68 in (17.40 mm) |
| Total Weight | 10.64 oz |






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