GMEG1061     61RING-FN .61 BB Fr Ndl Vlv Ring w/Mfflr 

TECH NOTES

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

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

ACCESSORIES

THIS IS THE GMS .61 FRONT NEEDLE VALVE AIRPLANE ENGINE.
FEATURES: 2 NEEDLE CARB FOR SEPARATE HIGH AND LOW SETTINGS, HIGH SPEED NEEDLE
HAS HOLE FOR MUSIC WIRE EXTENSIONS, BALL BEARING SUPPORTED CRANKSHAFT, GLOW
PLUG, ROTATABLE MUFFLER W/PRESSURE TAP & GASKET, RINGED PISTON
REQUIRES, 10-15% FUEL, BREAK-IN PROP, FUEL FILTER, FUEL TUBING, GLOW STARTER