Instruction Manuals:	Manual 1 (1.5 MB)
Tower Catalog Page:	196
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  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

SPECS:    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

REQUIRES: 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***



– If you need more information, use these O.S. resources –

Click Here: Manufacturer's Product Web Page
E-mail: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970


 
Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822  








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