four-cylinders

Updated: May 14, 2025

A list of aeroplane engines, prepared in 1912 by Graham Clark, showed that, out of the total number of 112 engines then being manufactured, forty-two were of the vertical type, and of this number twenty-four had four-cylinders while sixteen were six-cylindered.

W. Lockwood (William Lockwood) Marsh - A History of Aeronautics