Seibel makes interesting small radial engines for giant model airplanes and UAVs.

-Their engines initially were intended for regular-sized flying scale models. Its use is also contemplated in pilotless observation aircraft. Or at least that's how it is mentioned.

-The Seidel ST14-500B, the ST-710, the ST7-250, the ST UMS 7-70, the ST-90 or the ST7-700 stand out, the latter in final development. The ST14-500B is beautiful.

“Seidel's 14-cylinder”

-The initials ST refer to Seidel-Triebwerke. A 9-cylinder radial engine is under development.

“Seidel ST-90”

-There is also a 7-cylinder, like the ST7-700 running on oil (gasoline) with a planned power of 40 CV (30 kW).

-Other engines use gasoline or methanol, depending on their specific design.

“Seidel ST7-700”

“Seidel ST-710 methanol”

“Seidel ST-710 methanol”

“Seidel ST7-250B, Benzine (Petrol)”

-The projects for this year 2009 are several but the Seidel product line goes back a long way, starting with the 5-cylinder models.

-The R 150 5-cylinder 8.5 CV. The R 225, 5 cylinders and 15 CV.

-The R 250 and 15 CV, with 5 cylinders. The numbers 150, 225 and 250 coincide with the displacement in cc.

-The R 400 continues with five cylinders and produces 23 CV.

-The ST 160B with 7 cylinders giving 10 CV, also known as ST-7-160.

-The ST-7-250B giving 14 CV.

-The 14-cylinder (two coupled 7-cylinders) is the ST 14-500 giving 22 CV. The ST 14-500B runs on gasoline.

-The 40 CV ST 7-700B is for this year 2009.