Here is a selection of technical data and technical articles that have appeared in the 'On The Beam'.

Technical Plates

Exploded diagrams of the Sunbeams exist, with all the parts that make-up a Sunbeam displayed. These excellant diagrams not only give view of the internals and components of the bikes, but also allow easy purchasing of spares, since each item is individually numbered. These plates are reproduced with kind permission from Stewart Engineering. All the diagrams are available on the online Stewart Engineering catalogue.

Plate 1 - The Sunbeam Engine

Plate 2 - The Sunbeam Gearbox

Technical Articles

Wasted Spark Ignition

Comments on why to make the switch, the benefits of the change and a step by step how-to guide. An introduction to the Wasted Spark system.

Rear Drive Removal

An article on the removal of the rear-drive. At the 2005 Sunbeam Owners Fellowship rally a sidecar rear-drive was swapped for a solo. Photographs were taken to form this step-by-step guide. Rear-drive removal technical article.

Oil pressure switch adjustment

An article on the joys of locating the oil pressure switch adjustment. Oil pressure switch adjustment article.

The Lucas Dynamo Workshop Instructions

Servicing and fault finding information on the Sunbeam DynamoThe Stewarts provided Sunbeam Dynamo service sheet.

Subeam Bolt Sizes

The complete set of the original bolt sizes for the Sunbeam S7 and S8.Subeam Bolt Sizes.