We are grateful to Mike Halse of Nelson, New Zealand, for the submission of the following paper prepared by the Chief Engineer of Perkins Outboard Motors Ltd.  Mike is a retired Perkins Engineer who worked for the Outboard division during its entire time in the outboard business.


We also wish to acknowledge the Institution of Mechanical Engineers, London, which provided the vehicle for distribution of the paper.  Here’s a bit of information on that organization:



Established in 1847, the Institution of Mechanical Engineers (IMechE) is the leading body for professional mechanical engineers. With a world-wide membership now in excess of 75,000 engineers, the IMechE is the United Kingdom's qualifying body for Chartered and Incorporated mechanical engineers.




Go to the paper