This is one of the O.S. FX Series of High-Performance Engines. This series of
engines are Used in Sport and Aerobatic Aircraft. The FXs are Designed to
Use a Muffler or Tuned Pipe. This is an ABN Ringed Engine.
FEATURES: One-piece crankcase Twin ball bearing-supported
crankshaft Schnuerle porting (AKA Schnuerle scavenging) ABN
construction (Aluminum piston, Nickel plated Brass cylinder) with
alloy cast iron piston ring. Advanced Bi-Metallic Liner. This
process uses a double layer of plating material, rather than one
thicker layer. This helps the metal to bond to the cylinder, and is
more durable. Also, the plating process is more consistent,
resulting in a more precise fit between piston and sleeve. The end
result is better compression and longer life. Side exhaust with
muffler with rotatable exhaust outlet Carburetor with remote needle
mounted on the backplate of the engine (to keep fingers away from
the spinning propeller). Two-year warranty
INCLUDES: One Expansion style muffler (#E-4010) with screws One
Assembled engine with carb. One package illustrated instructions,
parts list, and O.S. decal One O.S. #8 glow plug (OSMG2691)
SPECS: Displacement: 14.95cc (0.912 cu in) RPM range: 2,000 -
16,000 Bore: 27.7mm (1.090") Stroke: 24.8mm (0.976") Compression
Ratio: 10.1 : 1 Weight: 550g (19.42oz) 24.3 oz w/muffler Horsepower:
2.8 BHP at 15,000 RPM Length: 96mm the distance from the backplate
to drive washer Width: 42.6mm width of engine neglecting engine
mounting flanges 52.0mm distance between centers of the mounting
holes Height: 103mm Crankshaft Thread Size: 5/16-24 Props: Hobby
Services recommends a 13x8 or 13x9 prop (6/99) NOTE: Exh port same
size as .61SF so can use 61SF Header w/91 Pipe
REQUIRES: Fuel: 18% (minimum) conventional lubricant content and
5%-20% Nitro.
COMMENTS: All FX series engines are covered by the OS two year
warranty Engine mounting & exhaust dimensions are the same as .61FX.
Engine guru Clarence Lee tached this engine w/various props Prop
Size RPM 13x6 12,500 13x8 10,400 using a 13x8 prop, 13x10 9,500
Hobby Services tached this 14x6 10,900 engine at 11,300 rpm 14x8
9,500 6-24-99 14x10 8,400 15x6 10,200 15x8 8,100 16x6 8,300 |
