Paxman Engines Co. Ltd. Colchester

The Museum has limited space in which to exhibit all the material in its collection. In addition to the larger exhibits it has a lot of back up material about its exhibits, this includes the history of the companies, drawings, and other related items. This archive is made up of both paper and where possible an electronic version has been made for you to view online.

The electronic format is now in a PDF format. If you require a FREE PDF reader please click here

Paxman Valenta YJ

Valenta YJ: This cut-away section of a Valenta engine was donated to the Museum of Power via the Paxman Engines Co Ltd training school in Colchester. The number Y3J12512 recorded as the serial number is in fact the engine type identifier.

Thus; 'Y3' indicates that the engine is in 'V' form and is a Mark III (conceived as VJ Mark III) 'J' indicates that the cylinder bore size is 7.75 inches or 197mm. '125' indicates its application was for the 125 High Speed trains. While '12' indicates the number of cylinders. Note: further more detailed information on Paxman Engines may be obtained from Richard Carr's Paxman History Pages at

(Museum object number: M54)

Paxman Valenta



3  Column Picture Example


Paxman Engines Co. Ltd. Colchester, Engines, 4RW, 16RAS, 6RQ, RHP and VK

Paxman 4RW

Paxman 16RAS

Paxman 6RQ






Paxman RHP

Paxman VK


Back to the Archive

Museum of Power
Museum of Power, Langford, Essex CM9 6QA
Tel: +44 (0) 1621 843183