Overview
This is the model of a 4-stroke 10 cc engine (Whippet), designed in 1963 by Edgar T. Westbury. The original drawings of the engine can be found at
http://www.john-tom.com/html/ICEngines.html
An important website dedicated to this engine is
Westbury Whippet Project (http://modelenginenews.altervista.org/projects/whippet/index.html#2a)
The videos can be seen at full screen (double click on video, click to play and stop) or as picture in picture, using controls in video's bottom right side.