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        This is the O.S. Max 75 AX ABL Aircraft Engine with Muffler.

FEATURES: Same mounting dimensions as the O.S. Max .61FX
          Advanced Bi-Metallic Liner process uses a double layer of plating
            material rather than one thick layer. This helps the metal bond to
            the cylinder and makes the plating more durable. Also, the plating
            process is more consistent, resulting in a more precise fit between
            piston and sleeve for better compression and longer life.
          Power Box muffler design provides more volume for increased power in
            a very compact shape
          Angular head design offers increased surface area for better cooling
          Ball bearing-supported crankshaft
          61A carburetor with diagonally placed needle valve eliminating
            remote needle valve placement
          Two year limited warranty

INCLUDES: O.S. Max 75 AX ABL Aircraft Engine with E3010 muffler, carburetor,
            #8 glow plug, illustrated instruction manual

REQUIRES: Aircraft blend fuel containing 5%-20% Nitromethane with at least 18%
            lubricant

SPECS:    Displacement: 0.75 cu in (12.3cc)
          Bore: 1.02" (25.8mm)
          Stroke: 0.93" (23.5mm)
          Practical RPM: 2,000-16,000 RPM
          Power Output: 2.4ps/15,000 RPM
          Weight: 20.39 onuces (578g) w/o muffler
                  26.46 ounces (750g) w/ muffler
          Recommended Props: 14x6, 14x8, 15x7
          Crankshaft thread size: 5/16-24
          Distance from center of engine to drive hub: 2.62" (66.6mm)
          Height from crankcase bottom to top of cylinder head: 4.07" (103.5mm)
          Height/crankshaft center to top of cylinder head: 3.20" (81.5mm)
          Width including mounting tabs: 2.4" (61mm)
          Width not including mounting tabs: 1.67" (42.6mm)
          Width between mounting holes same side: .98 (25mm)
          Width between mounting holes opposite side: 2.04" (52mm)
          Diameter of muffler body: 1.92" (48.8mm)
          Angle of muffler in relation to engine: 4°

         High Speed Needle: 1.5 - 2 turns out from fully closed
         Low Speed Needle:  2mm gap between the needle and spray bar at full
                            throttle (looking down the neck of the carb)

                                                                    jxs 4/12/07
                                                                         ir/jxs
                                                            updated jpg 7/11/07



– 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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