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Tower Catalog Page:	195
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     This is the O.S. .25AX ABL Model Airplane Engine with E-3080 Muffler.
  Ideally suited to a variety of R/C aircraft including trainer, sport types.

FEATURES: Same mounting dimensions as previous O.S. .25 size engines
          Advanced Bi-Metallic Liner. This process uses a double layer of
            plating material rather than one thick layer. This helps the metal
            to bond to the cylinder and is more durable. Also, the plating
            process is more consistent, resulting in a more precise fit between
            piston and sleeve for better compression, longer life.
          Newly designed E-3080 Power Box muffler generates mild and
            pleasant sound and is constructed with an O-ring between the front
            rear body to prevent oil leaking and is fully positionable
          21L carburetor with needle valve angled toward rear of engine for
            safer adjustments
          Ball bearing-supported crankshaft
          Two-year limited warranty

INCLUDES: One O.S. .25AX ABL BB model airplane engine with muffler, #8 glow
            plug, two 3x28mm cap head muffler screws, needle valve extension
            cable, warranty sheet, decal sheet and illustrated instruction
            manual

REQUIRES: Fuel containing 5%-20% nitromethane with at least 16% lubricant

SPECS:    Displacement: 0.248 cu in (4.07cc)
          Bore: 0.709" (18mm)
          Stroke: 0.630" (16.0mm)
          Practical RPM: 2,500-17,000
          Output: 0.8 ps @ 15,000 RPM
          Weight: 12.6oz (357g) with muffler
          Recommended Propellers: 9x5, 9x6, 9.5x5, 10x5
          Crankshaft Size: 1/4-28

          Distance from center of engine to drive hub: 2.1" (53mm)
          Distance from center of engine to end of crankshaft: 3.1" (77mm)
          Distance/crankshaft center to muffler exhaust outlet:
          Height from crankcase bottom to top of cylinder head:
          Height/mounting tab to top of cylinder head:
          Width including mounting tabs: 1.8" (45mm)
          Crankcase width below mounting tabs: 1.2" (30.6mm)
          Width between mounting holes same side: 0.59" (15mm)
          Width between mounting holes opposite side: 1.5" (38mm)
          Diameter of muffler body: 1.2" (32mm)

          Needle Settings: High Speed: 2 turns out from fully closed
                           Low Speed:  Flush with carb body then 1/2 turn in

                                                                   jxs 04/14/09
                                                                         ir/jxs



– 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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