Thanks for the post, Roger – I’ve always been in awe of the radials and love the “whump-whump-whump” sound they produce. Can you imagine the sheet of paper this design started on? The brain-power to take a concept and turn it into an engine is well – amazing! I’ve worked with a lot of engineers in my life and had the very distinct pleasure of once meeting Zora Arkus-Duntov and listening to him talk about how one horsepower per cubic inch was only the starting point. How incredibly visionary these people were and we continue to reap the benefits of their enthusiasm. George Mead was truly a pioneer in aviation engine design.

Great Post!!
Glenn