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Tower Catalog Page:	194
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    This is the .65LA Engine from O.S. Max Designed for Sport Airplane Use.
          This is a Non-Ringed Engine and has a Two-Year Warranty.
        This Engine has a Natural Finish w/"O.S." & "65LA" on the Sides.

FEATURES: One-Piece Crankcase
          Long Crankshaft Rides In One Long Bronze Oilite Bushing (No Bearings)
          Schnuerle Porting (AKA Schnuerle Scavenging)
          Side Exhaust, Bolt-Through Muffler Mounting
          Metal Remote Needle Valve Allows Change From A Vertical to Horizontal
            Orientation
          Composite Backplate Mount
          Hex Head Air-Bleed Carb Screw For Safer and Easier Adjusting
          #60J Carb
          Aluminum Piston with Nickel-Plated Brass Cylinder Liner

INCLUDES: One Assembled Engine with Carb
          One Expansion-Style Muffler (E4010S) with Rotatable Exhaust Outlet
          One #A3 Glow Plug
          One Set Instructions, Decal Sheet, and Warranty Sheet
          Two 3x40mm Screws to Bolt Muffler to Engine

SPECS:    Construction: Aluminum 1-Piece Crankcase, Piston, Cylinder Head.
          Displacement:  10.85cc (.66 cu. in.)
          Bore:          24mm (.945")
          Stroke:        23.5mm (.925")
          Practical RPM: 2,000 - 16,000 RPM
          Horsepower:    1.7bhp at 16,000 RPM
          Weight:        535g (18.9 oz)
          Distance Between Mounting Holes Same Side: 0.98" (25mm)
          Distance Between Mounting Holes Opposite Side: 2" (52mm)
          Length: 91.2mm (3.59") From Backplate to Front of Drive Washer
                  25mm (1") Center-to-Center, Front-to-Rear Mounting Holes
          Width:  42mm(1.65") Neglecting Engine Mounting Flanges
                  52mm (2.05") Center-to-Center, Side-to-Side Mounting Holes
          Height: 85.4mm (3.36") Mounting Flange To Top Of Head
                  Overall Height: 107mm (4.21")
          Crankshaft Thread Size: 5/16-24
          Recommended Props: Break In: 12x6
               Trainer & Sport models: 12x7,12x8,13x6,13x7, or 13x8
          Practical RPM Range: 2,000 - 16,000 RPM (This engine will not turn
            this RPM on the ground) RPM curve is when the engine unloads.
          Remote Needle Valve Setting: 2-1/2 Turns Counter-ClockWise From
                                       The Closed Position
          Air Bleed Screw: Tip Of Screw Will Cover 1/2 Of The Hole In The
                           Front Of The Carb

REQUIRES: Fuel: 5%-15% Nitromethane and 18% (Minimum) Oil Content
          Propeller
          Medium (Standard) Silicone Fuel Tubing
          Misc Items: Plug wrench, starter and field equipment

                                                                    tlw 6/22/07
                                                                         ir/jxs



– 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  








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