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Instruction Manuals:	Manual 1 (1.6 MB)
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 This is the 1.40RX engine from O.S. for F3A contest flying. It conforms to the
new rules for powerplants.

FEATURES: Rear-mounted needle valve (attached to a bracket on the backplate)
          2-needle pump carb
          Integrated fuel pump (for continuous fuel flow during aerobatics)
          One-piece crankcase
          Designed to get the max power at low RPM (makes the engine quieter)
          Extra cooling fins (helps dissipate heat)
          Ringed piston
          Rear exhaust
          Twin ball bearing-supported crankshaft

INCLUDES: One set of instructions, O.S. poster, and decal
          One #A5 Glow Plug (OSMG2693) Heavy Duty Drive Washer
          One prop nut w/locknut and spinner mount
          One additional needle (with less taper)
          One Heavy duty drive washer
REQUIRES: Header (exhaust adapter) for a tuned pipe (OSMG2727)
          Tuned pipe (tuned silencer - OSMG2945)
          2-stroke fuel

SPECS:    Displacement:        1.40 cu. in.
          Bore:                1.26" (32mm)
          Stroke:              1.13" (28.6mm)
          Practical RPM Range: 1,800 - 10,000
          Max Power:           3.5 BHP at 9,000 RPM
          Weight (WITHOUT ANY EXHAUST): 29.3oz (840g)
          Suggested Prop Sizes: 15x14, 16x14
          Overall height:      4.65" (118mm)
          Overall length (backplate to front of drive washer):  4.6" (117mm)
          Overall width:       2.76" (70mm)
          Width of crankcase only (for engine mount): 1.91" (48.4")(this is the
            same mounting dimensions as the 1.20 Surpass II with pump.)
          Crankshaft thread size:  5/16-24

          Needle Settings: High Speed: 2 turns out from fully closed
                           Low Speed:  Indentation on screw head vertical
                                       (straight up and down)
                                                                    JBN 8.29.96
                                                                   UP1-5-97/eke
                                                                          ir/jl
                                                               updt lmm 3/31/09



– 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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