Big wheel, small wheel
Introduction
The photograph on this page of Big wheel, small wheel by Bill Nicholls as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Bill Nicholls Taken: 18 Jul 2010
The large drive wheel with a strut going to a box on the rear of the engine. This has a smaller wheel on which puzzled me as to what it was. The smaller wheel let down a spike for breaking up the road surface.
