Instruction Manuals:	Manual 1 (1.1 MB)
Tower Catalog Page:	196
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   This is the O.S. Max FR5-300 "Sirius" 4-Stroke, 5-Cylinder Radial Engine.
     This engine is very popular with the "Giant Scale" modelers with its
  abundant power, low vibration, smooth operation, and realistic noise levels.
     This engine is the masterpiece of O.S. Multi-Cylinder 4-Stroke Engines!

FEATURES: Pushrod-Driven Overhead Valves
          Gear-Driven Camshaft
          Ball Bearing-Supported Crankshaft
          5-Cylinder Radial Configuration   Firing Order: 1-3-5-2-4
          Ringed Pistons
          Two-year warranty

INCLUDES: One Motor mount with mounting hardware
          One Locking Prop Nut Assembly
          One Display Stand
          One Choke Valve Extension (rod)
          One Gauge Tool Set
          One Glow Plug Extension Harness
          Five #F glow plugs
          One Set of Instructions, Poster, and Sirius/OS Decals

SPECS:    Displacement: 9.96cc (x5) (.607 cid x5)
          Bore:         24mm (.945")
          Stroke:       22mm (.866")
          Power Output: 4 BHP at 8,000 RPM
          Practical RPM Range: 1,800 - 8,500 RPM
          Weight:       2670g (94.2oz) w/mount
          Length:  158.5mm (6.24") back of motor mount to front of drive washer
          Diameter:  234mm (9.21")
          Shaft Thread Size: 3/8-24
          Engine Mount Dimensions: 5 Point Bolt Mount
           Mount Inner Diameter: 4-1/8"
           Mount Outer Diameter: 4-3/4"
          Suggested Props: 18x12, 18x13, 18x14, 20x8, 20x9, 20x10, 22x8

          Needle Settings: High Speed: 2-3 trns out form fully closed
                           Mixture Control (low speed): 2 turns out from fully
                                       closed

REQUIRES: Fuel with 5%-15% Nitromethane and 16% MINIMUM lubricant content
          (Most of the 5%-15% fuels we carry meet these requirements)

COMMENTS: No longer includes needle valve extension, knob and hook,
            M3x32 propeller slippage screws, motor mount template, or spare
            Woodruff key.
  ***Does NOT include the screwdriver, wrench set or the allen wrench set ***
                                                                        ir/jl
                                                             update mcw 7/8/04
                                                               updt lmm 4/6/09



– 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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