The 2 cc K Falcon diesel was the first of a short series of 2 cc engines produced during 1949 by the K Model Engineering Co. of Gravesend in Kent, England. It was a light, compact and well-made engine which handled and performed very well. However, its career was blighted by the design issues which bedevilled its larger 5 cc sibling, the K Vulture, resulting in a loss of consumer confidence in the entire K range. A somewhat simplified version called the K Kestrel was introduced later in 1949 in an attempt to salvage something from the wreckage, and this was followed by a glow-plug conversion of a few of the remaining unsold Falcons which was marketed as the K Tornado. The Kestrel and Tornado appear in the subsidiary images below.
None of these expedients were enough to save the company, which ceased trading prior to the end of 1950. For a complete account of the K 2 cc models, see my earlier article on the late Ron Chernich's "Model Engine News" (MEN) web-site.