The Trompenburg-Spyker works in Amsterdam built automobiles and aircraft (Netherland Automobile and Aeroplane Works Corp.).

-Around 1915 it manufactured rotary radial engines such as the 80 hp of the Spyker V2 biplane.

-Or the 130 hp of the Spyker Scout and Fighter.

“Spyker, 135 CV”

-The 9-cylinder 135 hp engine rotated between 1,100 and 1,200 rpm, with the intake and exhaust valves mechanically operated by means of control rods.

“Spyker, rear view”