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4.5 out of 5 Customer Rating

120AX Ringed 1.20 Airplane Glow Engine without Muffler

Item No. OSMG0651
Brand Logo
4.5 out of 5 Customer Rating

120AX Ringed 1.20 Airplane Glow Engine without Muffler

Item No. OSMG0651
$354.85
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Product Details

Key Features
  • Model Application: Ideal for 3D, Precision and Sport flying
  • Mounting Application: Mounts in same space as the .91FX
  • 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
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In The Box
  • (1) O.S. Max Two-Stroke 1.20AX Ringed Engine
  • (1) #8 glow plug
  • (1) Prop washer and nut
  • (1) Needle valve extension set
  • (1) Decal sheet
  • (1) Product manual
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Needed to Complete
  • Fuel: Two-Stroke with 18% lubricant and 5-20% nitromethane
  • Muffler: E-5020 "Power Box"
  • Propeller: 15x10-12 or 16x8-10
  • Field Equipment: Glow starter, fuel filter, fuel pump, fuel tubing

Perfect for 3D, precision and sport flying!

Admit it: if you could ratchet up horsepower without having to increase the mounting space, you’d probably jump at the chance. Well, here it is. The 120AX boasts 25% more displacement than a .91 (think of the bigger props you can swing!) — and bolts into the same space, with almost no extra weight. Here’s a golden opportunity to boost your airplane's flying capabilities — with almost no modification!


O.S. Engines two year limited warranty

Product Specifications

Manufacturer # 19218
Product Height 4.3" (109.2mm) from bottom of crankcast to top of cylinder head
Prop Range 15x10-12, 16x8-10
RPM Range 1,800 - 9,500 RPM
Starter Type Hand Held Starter
Displacement 1.218 cu in (19.96cc)
Product Length 3.9" (100.2mm)
Bore 1.197" (30.4mm)
Cylinders Single
Crankshaft Type Threaded
Product Width 2.6" (67mm) at mounting tabs
Power Type Glow
Cylinder Type Steel liner and piston
Engine (Only) Weight 20.88 oz (647 g)
Plug Type O.S. #8
Stroke 1.083" (27.5mm)
Crankshaft Threads UNF5/16-24