The Seal 15 cc

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The design for the 15cc Seal was published in Model Engineer by Edgar Westbury in February 1947. It is typical of the pre-war straight four engine designs with water cooling, side valves and a two-bearing crank. From the first article Edgar suggested that the Seal was going to be the first of a number of four cylinder model engines he intended to publish promising both 15cc and 30cc designs of side and overhead valve arrangements.Edgar chose to design an engine based around automobile rather than marine practice as it is simpler and lends towards straightforward methods of construction.