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

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

COMMENTS: This engine will fit in the Nexus 46 and the Concept 46VR. Replacement Recomended Glow Plugs, O.S. Max #8, A3 or A5.