J P Smith of Keighley riding his Slinger 1901 at the start of the 22nd Pioneer Run of the Sunbeam Motorcycle Club from Tattenham Corner to Brighton"
The rear of the machine appears much as a conventional bicycle, whereas at the front the normal wheel and forks were replaced by a small motorcycle with two small wheels and a De Dion engine between them. The engine was water-cooled with the radiator surrounding the cylinder. It had a surface carburetor and coil ignition. Transmission was by chain to a countershaft and then by a second chain to the rear small wheel. For steering it had braced forks to the front assembly, and further linkage for turning the front wheel.