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 This is a .61 2-Stroke Airplane Ringed Engine w/ Front Needle Valve from GMS.

FEATURES: Ball bearing-supported crankshaft
          Front (carburetor) mounted High Speed needle valve
          Low Speed needle-equipped carburetor
          Ringed piston
          Adjustable exhaust outlet on muffler allows 360° rotation of
            muffler tip
          Gold anodized heatsink head
          One piece crankcase with a bead-blasted finish
          2 year warranty on all GMS engines

INCLUDES: One .61 ringed airplane engine
          One bolt-through muffler
          One carburetor
          One carburetor-mounted High Speed needle valve
          One glow plug
          Two allen key tools
          Two muffler screws
          One manual and parts list

REQUIRES: Attaching High Speed remote needle valve and muffler.
          10-15% nitro airplane fuel.
          11x7 break-in propeller

SPECS:    Displacement: .61 cid (9.97 cc)
          Bore: 23.8mm
          Stroke: 22.4mm
          Output: 2 BHP at 15,000 RPM
          Practical range: 2,000 - 13,000 RPM (with 11x7 prop)
          Weight: 26oz (737g) with muffler

          Center distance width across mounting holes: 2.0" (52mm)
          Center distance length of mounting holes on same side: 1" (25mm)
          Length from front of crankcase to backplate screws: 4.0" (102mm)
          Width across mounting flanges: 2.4" (61mm)
          Total height of engine: 4" (101mm)
          Length from center of head to front of crankcase: 2.9" (73.5mm)
          Widest width of crankcase neglecting mounting flanges: 1.7" (43mm)
          Length from front of crankcase to center distance of front
            mounting hole: 2.4" (61mm)
          Height from crankshaft center to top of head: 3.1" (79.5mm)
          Crankshaft thread size: 5/16-24

          High Speed Needle:  1½ turns OUT from closed
          Low Speed Needle: 2 turns IN from flush with throttle arm

COMMENTS: Use the following size propellers depending on your type of model
          Sport Model: 11x8
          Racing Model: 11x7
          Scale Model: 12x6

          For the GMS .61 engine with remote needle valve, use GMEG1161.
          To convert to a remote needle use GMEG7270 & GMEG7370

          All GMS engines use the same owner's manual

          Factory Needle Settings:
           High Speed Needle: 1.5 turns OUT from closed
           Low Speed Needle: 2 turns IN from flush with throttle arm

                                                                   cmc 07/31/03
                                                            Updated JBM 4.26.06
                                                                         ir/jxs
                                                               updt lmm 3/27/09



– If you need more information, use these GMS Engines resources –

Click Here: Manufacturer's Product Web Page
Phone: 217-398-8970


 
Postal Address:
GMS Engines
1610 INTERSTATE DRIVE
CHAMPAIGN, IL 61822  








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