This is a High Performance Engine Developed Expressly for F3C M Class
Helicopter Competition Utilizing .50 Cubic Inch Engines.
The Engine Uses the Same Mounting Hole Spacing as the O.S. 46FX-H Ring,
Making the Two Engines Interchangeable.
A Special Machined Drive Washer and Dual Throttle Levers are Supplied as
Standard for Helicopter Use.

FEATURES:
Designed for F3C M Class Helicopters
Dual Throttle Levers Mounted on Type 40E Carburetor
Heatsink Head
Interchangeable with O.S. 46 FX-H Engine
Throttle Position Marked on Carb Body for Easy Reference
Carb Features High and Midrange Needle Adjustment

Displacement:
8.17cc (0.499 cu in)
Bore: 22.0mm (0.866")
Stroke: 21.5mm (0.847")
Weight: 413g (14.58 oz)
Power Output: 1.8 bhp / 17,000
Practical RPM Range: 2,000 - 20,000 rpm
Crankcase Width: 36mm with/out mounting flanges
Width: 52mm with mounting flanges
Distance between mounting holes front to rear: 18.5mm (0.730")
Distance between mounting holes side to side: 43.5mm (1.714")
Crankshaft Threading: 1/4-28
Starting Setting: Main Needle 2 Turns out from Fully Closed
Fuel: 10% to 20% Nitromethane with at least 18% lubricant
Recomended Glow Plug: #8, A3 or A5
Throttle has 77 degrees of travel
Factory Settings: Main Needle Fully Closed
Midrange is Centered (Slot of Adjustment Screw is
in line with Carburettor Body.

INCLUDES:
One Assembled .50 SX-H Helicopter Engine with #40E Carburetor
One OS Max #8 Glow Plug
One Instruction Sheet
One OS Max Decal Sheet

REQUIRES:
10% to 30% Fuel with at least 18% lubricant (Helicopter Mix Fuel)
Starting equipment.

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