[Sirrotica]

Thanks Eric, good engineering information that shows the reasoning behind the statements that Paul K made in an earlier post about a slight press fit was preferred, to a loose slip fit.

I've always liked the design of Pontiac slip fit balancers, over Band X press fit balancers, but that hinges on constant torque on the balancer bolt holding all the pieces together so the snout on the crank won't flex. Your explanation shows how the press fit may be superior, especially for severe side loads, such as driving a supercharger.

Some of the old front engines drag cars would mount the blower directly in front of the engine because they had the room, and I suppose it also side stepped the side loading of the crank snout. The only problem would be the ability to change drive ratios without some sort of a planetary gearbox. in between.