("On-Condition" wrote)
BTW, weren't there some diesel radials in the early days of
aviation? I've seen some photos I think. The high torque
of diesel almost begs for that can't-keep-from-turning
radial geometry.


http://www.goldenwingsmuseum.com/Aircraft%20Pages/Stin-Det.html
Golden Wings Museum
1928 Stinson Detroiter Packard Diesel


Montblack