⭕ ROBART, R780, 7 Cylinder, Radial Engine, Star engine, 10 hp.

Glow plugs are included and ignition system with booster power so very low rpm:s can be hold, and a very smoth running during all conditions.

Run on any standard model 4 cycle fuel. Fuels containing castor-oil and/or syntetic lubricants are acceptable. 10-15% Nitromethone works best.

Oil pump and pressured oil circulation.

Blower fan, 8 Ball bearings in total, Valve lifters with rollers etc...

Horsepower: 10
Max RPM: 5,500
Weight: 7 1/2 lbs.
Fuel: Glow
Prop: 24-8 to 32-10


The Robart R780 is a 7 cylinder radial engine 1/5 scale of a Jacobs 225 HP engine that powered many of the military training and civilian airplanes of the 30s, 40s, and 50s.

We have incorporated many features of the full sized engine into this engine; to name a few: hemi head, large valves, with steel seats and bronze guides, special chrome-plated cylinders, 2 ring pistons, roller lifters, ball bearings throughout, oil pump, up draft carburetor with booster fan, and a 4130 steel tube motor mount with rubber dampers. All this to bring you the look, the sound, and the power of a true model airplane radial engine.