I'd never seen one of those before...that's a real nice machine!! Would love to try one!
So would I. They say the SuperSplit ratings are not comparable to a hydraulic splitter because the impact of the ram adds to its effectiveness, similar to a hand splitting maul.
The science of inertia is in its favor once that flywheel gets going. It reminds me of the old 2-cylinder John Deere A tractors. You tap the flywheel energy like a well and all the motor really does is drive the big flywheel. Then it unleashes the energy onto the log. The quick return mechanism is also a dandy.
As long as there is a working safety device so that the machine doesn't blow itself to pieces, they have a winner. I would worry a little about splitting crotch elm and huge rounds, but that's about it. Shucks, hydraulics bog down on those also.
Then look at its operating cost. Running on a 120 v electric motor, SuperSplit only costs 15 to 20 cents an hour to run--less than a cup of gasoline. Gasp!