HP:	2,1
RPM:	2000-12000
Weight (g):	920
Cylinder Type:	Ring
Incl. muffler:	yes

O.S. FS-120S III - 4-Stroke 19.96cc Airplane Engine
For aerobatic, scale and sport airplanes models.

Updated with the F-6020 Silencer.

Specs:

Displacement: 19.96cc
Bore: 30.4mm
Stroke: 27.5mm
Output: 2.07hp @ 12.000RPM
Practical RPM Range: 2.000-12.000
Weight: 920g

Recommended propellers:
Aerobatics: 13x11-13, 14x10-11

Scale models: 15x8, 16x6-8, 18x5-6, 14x7(3-blade), 15x8(3-blade)

Recommended fuels:
The FS-120S-III should run on a methanol-based fuel with at least 18% castor oil or a high-quality synthetic lubricant (or a mixture of both), plus a small percentage (5-15%) of nitromethane for improved flexibility and performance. The carburettor is factory set to a fuel adjusted with 20% lubricant and 10% nitromethane.