Parts Express Eligible:	Yes
Tower Catalog Page:	194
E-mail This Page To A Friend

               This is the O. S. Max .15LA Engine with Muffler.
               Meets requirements of beginners and sport flyers.
                      *** TWO YEAR LIMITED WARRANTY ***

FEATURES: One-Piece natural finish crankcase
          Non-ringed cylinder construction
          Two Bronze Crankshaft Bushings (sometimes called oilite bearings)
          Schnuerle Porting (Schnuerle scavenging)
          Side Exhaust
          Nylon Backplate with Remote Needle Valve
          #10G carb with remote needle valve assembly

INCLUDES: Expansion-Style Muffler #871
          .15LA Engine w/Carb
          Instructions, Decal Sheet, and Warranty Card
          Two 2.6x23mm screws to bolt muffler to engine
          1.5 inch length of fuel tubing for remote needle valve
          One #A3 glow plug

REQUIRES: Glow Fuel with 5-15% Nitromethane and 20% (minimum) lubricant content
          Glow starter, plug wrench and field equipment

SPECS:    Construction: Aluminum 1-Piece Crankcase, Piston, Cylinder Head,
            Crankshaft, Connecting Rod, and Crankshaft. Nickel-Plated
            Brass Cylinder
          Displacement: 2.49cc (0.1517 cu. in.)
          Bore:       15.2mm (.598")
          Stroke:     13.7mm (.539")
          Horsepower: .41 BHP at 17,000 RPM
          Weight: 5 oz w/o muffler (6.5 oz w/muffler)
          Length: 56.5mm (2.16") distance/backplate to front of drive washer
                  76.5mm (3.01") distance from backplate to prop adapter
          Width: 24.8mm (1.0") width of engine neglecting mounting flanges.
          Distance Between Mounting Holes Same Side: 14.4mm (.56")
          Distance Between Mounting Holes Opposite Side: 33mm (1.29")
          Height: 61mm (2.42")from bottom of mounting tab/top of cylinder head
          Crankshaft Thread Size: 5mm
          Recommended Props: Break In: 8X4
             Trainer and Sport Models: 7X5-6, 8X4-5
          Practical RPM Range: 2,500 - 18,000 RPM

          High Speed Needle: 1.5 turns out from fully closed
          Low Speed Needle:  Tip of the needle half way across the small hole
                             in the FRONT of the carb body.

COMMENTS: This engine will work well with any of the following glow plugs: A3,
            A5, or A8.

                                                                    tlw 6/22/07
                                                                         ir/jxs
                                                               updt lmm 3/27/09



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

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  








Click here for Units of Measure Conversion Calculators