Radial cylinder engine built by the "Dragon Engine Corp.".

-The model 1.7-50 was four-stroke, with a displacement of 1721 cc and giving 50 hp of power, with perfect symmetry and balance.

“Dragon”

-In fact, they were two joined three-cylinders rows. The connecting-rod system was patented in a way that it did not need master rods.

-It was not geared and had double ignition.

"Dragon diagram"