The Dennymite name was attached to a series of 0.57 cuin. (9.38 cc) spark ignition engines which had its origins in pre-WW2 America but returned following the war and survived in production right to the end of the spark ignition era. The Dennymite name arose from the involvement of the well-known movie actor Reginald Denny, who was a very keen model airplane enthusiast.

Although they bore Reg Denny's name, the Dennymite engines were actually designed and manufactured by Denny's associate Walter Righter of Glendale, California. Denny's role was confined to the promotion and marketing of the engines.

The Dennymite engines were both well designed and manufactured to very good standards. As a result, they became very popular both before and after WW2, remaining in production at some level and in varying forms over a period of over ten years between 1937 and 1948 - an unusually long production life for a classic spark ignition model. Thanks to the engine's durability and perceived value, many examples survive today in good condition.

A detailed article covering the Dennymite series may be found elsewhere on this website.