Description
OSM19218 O.S. 120AX Ringed 1.20 Airplane Glow Engine w/o Muffler
Note: Graves RC Coupons are not applicable with this product
This is the O.S. Max Two-Stroke 1.20AX Ringed Engine without Muffler.
| FEATURES |
Model Application: Ideal for 3D, Precision and Sport flying
Mounting Application: Mounts in same space as the .91FX (actual
mounting dimensions vary slightly, see SPECS)
Construction: Steel piston ring and liner, aluminum piston
Carburetor: 70D with rearward angled needle valve for safety
Glowplug: O.S. 8 supplied with engine, A5 (OSMG2693) will also work
Warranty: Two-year limited
| INCLUDES |
O.S. Max Two-Stroke 1.20AX Ringed Engine with 8 glow plug, prop
washer and nut, needle valve extension set, instruction manual
and decal set
| REQUIREMENTS |
Fuel: Two-Stroke with 18% lubricant and 5-20% nitromethane
Muffler: E-5020 “Power Box”
Propeller: 15×10-12 or 16×8-10
Field Equipment: Glow starter, fuel filter, fuel pump, fuel tubing
| SPECIFICATIONS |
Displacement: 1.218 cu in (19.96cc)
Bore: 1.197″ (30.4mm)
Stroke: 1.083″ (27.5mm)
Crankshaft thread size: 5/16-24
Practical RPM: 1,800 – 9,500 RPM
Power Output: 3.1ps/9000 RPM
Weight: 22.82oz (647g) without muffler
7.074oz (219.2g) with 90° adapter installed
7.907oz (245g) with extension installed
Distance Between Mounting Holes Same Side: 0.98″ (25mm)
Distance Between Mounting Holes Opposite Side: 2.3″ (58mm)
Distance Center of Crankcase to End of Crankshaft: 4.3″ (109.5mm)
Distance Center of Crankcase to Drive Hub: 2.7″ (69.8mm)
Width Between Mounting Tabs: 2.6″ (67mm)
Width of Crankcase Below Mounting Tabs: 1.8″ (46.5)
Length from Backplate to End of Crankshaft: 5.5″ (139.9mm)
Length from Backplate to Drive Hub: 3.9″ (100.2mm)
Height/Bottom of Crankcase to Top of Cylinder Head: 4.3″ (109.2mm)
Height/Bottom of Mounting Tabs/Top of Cylinder Head: 3.4″ (85.7mm)
Needle Settings: High Speed: 2 – 2.5 turns out from fully closed
Low Speed: 3/4 turn out from fully closed with the
throttle fully closed
Manuals:
OSM120AX-Manual-English
