If you have owned a British motorcycle for any length of time you will be familiar with the term "wet sumping." This tech article focuses on Triumph, BSA, and Norton motorcycles. The basic principles … read more

Triumph 650 4-Speed Gear Interchange: Meriden vs BSA Production Finding replacement gears for a Triumph 650 unit 4-speed gearbox is never straightforward. Only a handful of gears are still produced n … read more

Credit – Brightspark Magnetos Ltd Click Here to view KF Lucas parts manual Click Here to view Lucas face cam (magdyno) parts manual DIY Magneto Maintenance and Troubleshooting A fair amount of … read more

Triumph Tappet Blocks and Pushrod Tubes — A Neophyte's Complete Guide by Year The Triumph twin cylinder engine began life in the 1930s as a 500cc and was eventually expanded to 750cc, but the de … read more

Standard Bore Sizes for British Motorcycles Triumph · BSA · Norton · Velocette — standard bore reference in millimetres with inch conversions This is a standard bore size re … read more

Lucas type ammeter installation instructions Lucas offered a number of different type ammeters over the years. This deals with the last style fitted to many British models before they were discontinue … read more