Heli and Plane Engines

Heli and Plane Engines

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OS Max 25FX 2ST Glow Airplane Engine 21L E-892 Silencer New

OS Max 25FX 2ST Glow Airplane Engine 21L E-892 Silencer


The O.S. Engine 25FX II is a high performance side exhaust aero engine that is suitable for many styles of small R/C aircraft such as sport, scale, aerobatic and even .25 class pylon racers.

The 25FX II uses a direct needle 21L carburettor for excellent usability and a 892 silencer with adjustable exhaust direction.

Weight: 260gr.
Capacity: 4.07cc
Bore: 18mm
Stroke: 16mm
Power Output: 0.84 ps (0.83 hp)
Practical RPM: 2,500 - 19,000

Engine OS FS-56II Airplane 4T Glow 40NA and Silencer 4040


Carb Type: O.S. 40NA rotary
HP: 1.0PS, 0.99 HP @ 10,000 RPM
Muffler Type: 2-piece aluminum
Muffler Weight: 42 g
Prop Range: 12x6-8 - 13x6-7
Stroke: 20.6mm
Crankshaft Threads: UNF1/4-28
Engine (Only) Weight: 394g w/o muffler 419g
Recommended Fuel: 10%-20% four cycle blend nitromethane w/18% synthetic lubricant
Width: 44mm between mounting hole centers
Total Weight: 461 g

Engine OS GT15 Airplane 2T Gasoline 61H and Silencer 4040


Bore: 27.7mm
Carb Type: Rotary
Length: 106.2mm from pump to front bearing
Total Weight: 904 g
Recommended Fuel: 87 - 93 octane gasoline
Muffler Type: 2-piece aluminum
Muffler Weight: 178 g
Starter Type: Hand Held Starter
Cylinder: Single
RPM Range: 2,000 - 15,000
Height: 109mm from crankcase bottom to top of cylinder head

Engine OS GT22 Airplane 2T Gasoline WT1054 and Silencer 5040


Cylinders: Single
Benchmark Prop: 15x10
Displacement: 22 cc
Height: 140.5mm bottom of mounting tab to top of muffler
Oil Type & Content: 50:1 mix ratio 2-cycle
Prop Range: 16 x 8 - 17 x 8
Width: 70mm at mounting tabs
RPM Range: 1,800 - 9,000
HP: 1.75PS 1.73HP @16,000 RPM
Ignition Weight: 105 g

Engine OS GT60 Airplane 2T Gasoline and Silencer 6020


RPM Range: 1,600 - 8,000 RPM
Engine (Only) Weight: 1400 g
Total Weight: 1683g
Carb Type: Walbro reed valve
Recommended Fuel: 30:1 gas/oil ratio
Displacement: 59.91 cc
Height: 175mm
Prop Range: 22 x 10 - 24 x 10
Cylinders: Single
Ignition Weight: 105 g