I copied these from prcmodel.com

SPECIFICATIONS:

Type: 2 cycle piston valves type gasoline engine for airplane.
Displacement(cc): 26cc
Bore x Stroke(mm): 34mm*28.6mm
Dry Weight: 1.165kg/2.56lbs. (With standoffs, muffler and CDI)
Carburetor: Diaphragm butterfly valve type
Maximum Output: 2.42 hps/7200rpm
Speed range: 1800-9000rpm
Ignition: Auto-advaance DC-CDI
Iis-Ignition: 4.8V DC
Gasoline/oil mixture: Pre-mixed Fuel, 40:1(25:1 for break in)
Lubrication oil: 2 cycle engine oil
Propeller: 16 X 8, 17 X 6, 17 X 8, 18 X 6
Cooling System: Air Cooled