Introducing the Spartan 7W Executive, by HCG Digital Arts Ltd. A luxurious mode of air travel for its time, the Spartan 7W is a fabulous example of 1930’s innovation and technology. Powered by a Pratt & Whitney R-985 9 cylinder radial engine, the Spartan offers up around 450 hp. If you are having trouble starting or restarting, be sure to follow start procedures properly, some people I think are forgetting the primer!