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YS91ST Helicopter Engine

Price : US$ 300.00

Gross Weight: 800.00 g

Displacement: 0.912 cu. in. (14.95cc)

Output:

Bore: 1.09 in (27.7mm)

Practical rpm Range: 2,000-17,000

Stroke: 0.98 in (24.8mm)

YS91 STR Helicopter Engine

Price : US$ 335.00 **SOLD OUT**

with New Red Heat Sink and Special Mixture Control Carb. for prescise flight control

Gross Weight: 800.00 g

Displacement:

Output:

Bore:

Practical rpm Range:

Stroke:

OS32SX-H ring Helicopter Engine

Price : US$105.00 **SOLD OUT**

Gross Weight: 450.00 g

Displacement (cc/cu.in): 5.23 cc / 0.319 cu in

Bore: 0.768 in (19.5 mm)

Stroke: 0.689 in (17.5 mm)

Practical RPM: 2000-21,000

Output: 1.15 bhp @ 17,000 RPM

OS37SZ-Hring Helicopter Engine

Price : US129.00

Gross Weight: 450.00 g

Displacement: 0.37 cu in (6.07cc)

Bore: 0.806 in (20.5mm)

Stroke: 0.725 in (18.4mm)

Practical rpm range: 2000-21,000

Output: 1.4 ps @ 18,000 rpm

OS50SX-Hring Hyper Helicopter Engine

Price : US$199.00

Gross Weight: 550.00 g

Displacement: 0.499 cu in (8.17cc)

Bore: 0.866 in (22mm)

Stroke: 0.847 in (21.5mm)

Practical rpm range: 2000-20,000

Output:1.9 ps @ 17,000 rpm

OS91SX-Hring C Spec Helicopter Engine

Price : US$245.00 **SOLD OUT**

Gross Weight: 800.00 g

Displacement: 0.912 cu. in. (14.95cc)

Output: 3.0 ps @ 15,000 rpm

Bore: 1.091 in (27.7mm)

Practical rpm Range: 2,000-16,000

Stroke: 0.976 in (24.8mm)

OS91SX-Hring C Spec Pump Helicopter Engine

Price : US$325.00 **SOLD OUT**

Gross Weight: 850.00 g

Displacement: 0.912 cu. in. (14.95cc)

Output: 3.1 ps @ 15,000 rpm

Bore: 1.09 in (27.7mm)

Practical rpm Range: 2,000-16,000

Stroke: 0.98 in (24.8mm)