The Tucker was NOT a helicopter enngie ! Engineering used the concept of a flat 6 cyl. enngie. They then designed a completely new enngie for use in an automobile. I do not have access to Tucker records but I doubt that any parts from an aircraft were used in the Tucker. As an example, look at the crankshafts. Franklin aircraft enngies do not run at high RPM, consequently the lack of counterweights. Even the camshaft has to be redesigned for high RPM Aircraft enngies use separate cylinders whereas the Trucker has the cylinders cast en-block Remember. the Tucker was water cooled
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The Tucker was NOT a helicopter enngie ! Engineering used the concept of a flat 6 cyl. enngie. They then designed a completely new enngie for use in an automobile. I do not have access to Tucker records but I doubt that any parts from an aircraft were used in the Tucker. As an example, look at the crankshafts. Franklin aircraft enngies do not run at high RPM, consequently the lack of counterweights. Even the camshaft has to be redesigned for high RPM Aircraft enngies use separate cylinders whereas the Trucker has the cylinders cast en-block Remember. the Tucker was water cooled