GMEG1120     1.20RING-FN 1.20 BB Fr Ndl Vlv Ring w/o Mfflr 

TECH NOTES

This is the 1.20 Front Needle Valve Ringed engine without muffler from GMS.
It features a one-piece head with a hemispherical combustion chamber for
increased power, large crankshaft for balance and strength, and top
quality ball bearings, all backed with a full TWO YEAR warranty.

FEATURES: Hemispherical combustion chamber
One-piece cast crankcase with "bead-blasted" finish
Cylinder head machined from aluminum bar stock and anodized gold
Carburetor features 2 needles for independent High & Low adjustments
"Dykes" piston ring design

INCLUDES: One 1.20 GMS engine
One Carburetor
One glow plug w/copper washer
One 3mm allen wrench
One 1.5mm allen wrench
One instruction manual
One exploded view/parts list
REQUIRES: Muffler, bolt-on style (GMEG4880)
Fuel with 18% (minimum) lubricant content and 10%-15% Nitromethane

SPECS:    Displacement:        19.9cc  (1.20 cid)
RPM range:           1800-14,000 RPM
Bore:                30mm    (1.18")
Stroke:              28.2mm  (1.11")
Weight:w/o muffler, carb, drive washer, prop washer glow plug or nut
750g    26.5oz
w/muffler     879g    31oz
Horsepower:          3.3 BHP @ 13,000 RPM
Length: Backplate screw to front of drive washer:     110.5mm (3.74")
Between centers of the mounting holes            30mm (1.18")
Width:  Width neglecting engine mounting flanges         50mm (1.97")
Distance between centers of the mounting holes   60mm (2.36")
Exhaust mounting screws width (center to center):        40mm (1.58")
Height:                                                 120mm (4.72")
Crankshaft Thread Size:                                 3/8-24
Crankshaft Length from front of drive washer
to front of crankshaft: 35.6mm (1.40")
Crankshaft Threaded Area:       22mm (0.87")
Suggested Prop: Sport           16x10
Racing          16x8
Scale           18x5, 18x6

COMMENTS: A .078" wire (not included) can be used to extend the needle valve by
inserting the wire into the pre-drilled hole on the end of needle
valve and tightening it in place with the supplied set screw.

To convert to a remote needle use GMEG7280 & GMEG7380

All GMS engines use the same owner's manual

ACCESSORIES

THIS IS THE 1.20 FRONT NEEDLE VALVE RINGED ENGINE WITHOUT MUFFLER FROM GMS.
FEATURES: ONE PIECE HEAD W/HEMISPHERICAL COMBUSTION CHAMBER LARGE CRANKSHAFT
FOR BALANCE AND STRENGTH, AND TOP QUALITY BALL BEARINGS
REQUIRES: MUFFLER, BOLT-ON STYLE (GMEG4880)
FUEL WITH 18% (MINIMUM) LUBRICANT CONTENT AND 10%-15% NITROMETHANE