The Powertorque is that ultimate single purpose tailor made engine. Good for one thing and one thing alone. Direct drive on a blade disc. Nothing else.

Even the full cranks had issues running a belt with tension constantly applied on one side of the crank.
A half crank was a forgone conclusion it was not a good idea. You're better off with a four stroke. The gear down effect is enough to make them effectual.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!