OS Motors 120AX Ring 70D Carb No Muffler

This is the O.S. Max Two-Stroke 1.20AX Ringed Engine without Muffler.

FEATURES:
Design Application: Ideal for 3D, Accuracy and Sport flying
Installing Application: Mounts in same area as the .91FX (actual
mounting dimensions vary somewhat, see SPECIFICATIONS)
Building and construction: Steel piston ring and liner, aluminum piston
Carburetor: 70D with rearward angled needle valve for security
Glowplug: O.S. #8 provided with engine, A5 (OSMG2693) will likewise 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

NEEDS:
Fuel: Two-Stroke with 20% lubricant and 5-20% nitromethane
Muffler: E-5020 "Power Box"
Prop: 15x10-12 or 16x8-10
Field Devices: 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

Range Between Mounting Holes Same Side: 0.98" (25mm)
Range Between Mounting Holes Opposite Side: 2.3" (58mm)
Range Center of Crankcase to End of Crankshaft: 4.3" (109.5mm)
Range Center of Crankcase to Drive Hub: 2.7" (69.8mm)
Width Between Installing Tabs: 2.6" (67mm)
Width of Crankcase Below Installing 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 Installing Tabs/Top of Cylinder Head: 3.4" (85.7mm)

Needle Settings: High Speed: 2 - 2.5 ends up from completely closed
Low Speed: 3/4 turn out from completely closed with the
throttle completely closed

COMMENTS:
For version with muffler, order OSMG0650.