If you follow high-performance powerboating in even the most casual manner and you don’t happen to live under a rock, you heard that Greg Olson captured the Top Gun title at this year’s Lake of the Ozarks Shootout with a run of 192 mph. You likely also heard that he did it in a 33-foot Eliminator Daytona catamaran. If you’re really good, you might even know that the cat was powered by twin 1,800-hp monster engines from GT Performance.
Now, what propellers did he use for his blistering run? I’ll kill the suspense—or the time you’ll waste on a fruitless Internet search—with the answer: Hering 16-1/2” x 40” five-blades with 18-degree rake angle.