O.S. FF-320 Pegasus 4-Cylinder Ringed 4-Stroke

Tower Stock# LXBY71  •  Manufacturer Stock# 36410
O.S. FF-320 Pegasus 4-Cylinder Ringed 4-Stroke (large view)
Notes from our tech department:
Power your prized Giant scale plane with an O.S. Multi-Cylinder 4-Stroke
Engine. The O.S. FF-320 (Nicknamed "Pegasus") is a Flat-Four Cylinder Engine.
It is the ultimate in scale realism: abundant power, realistic noise levels,
and scale appearance. This engine is covered by a 2-Year Warranty.

FEATURES

Pushrod-Driven Overhead Valves
Ringed Pistons
Gear-Driven Camshaft
5 -Crankshaft Ball Bearings
2 -Camshaft Ball Bearings
Four Cylinders (flat, 2 opposing 2) Firing Order: 1-3-2-4

INCLUDES

One Assembled FF-320 4-stroke Engine
One Set of Instructions, Decals, and Poster
One Choke Valve
Four Glow Plugs (OSMG2692)
One Motor Mount (OSMG2804)
One Safety Prop Nut Assembly
One Glow Plug Extension Harness
One Spare Woodruff Key

SPECIFICATIONS

Construction: All aluminum and Aluminum alloys
Displacement: 13.26 cc (x4) (.809 cu in x4)
Bore: 27.7mm (1.091")
Stroke: 22.0mm (.866")
Power Output: 4.1 BHP at 8,000 RPM
Weight: 2,190g (77.3oz) w/mount
Practical RPM Range: 1,800 - 8,500 RPM
Length: 181.5mm (7.15") from back of mount to front of drive washer
Width: 196mm (7.72")
Height: 80mm (3.15") from top of mount to bottom of mount.
the carb extends 30-40mm farther down.
Distance from front-most edge of front header to drive washer: 36mm
Crankshaft Thread size: 5/16-24
Suggested Props: 18x10, 18x11, 18x12, 18x13, 18x14, 20x8, 20x9,
20x10, 22x8
Needle Settings: High Speed: 3-3.5 turns out from fully closed
Mixture Control (low speed): Turn counter-clockwise
until it stops, then 2 turns out

REQUIREMENTS

2-STROKE Fuel with 5%-15% nitromethane and 16% MINIMUM oil content.
(All 5%-15% fuels we carry meet these requirements)
DO NOT USE 4-STROKE FUELS!!)
JBN 7.27.93
These items are no longer included: ir/jl
NEEDLE VALVE EXT CABLE, CHOKE VALVE ROD updt lmm 4/6/09
(3) ALLEN KEYS 2.0,2.5,3.0-SCREW DRIVER
FOR MIX CNTRL, PROP WASHER,5 WRENCHES
** Please check the ACG for these part numbers***

Resources
See Tower Catalog page 174.
Easy RC: Engines
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