Which Way Do I Install an Oil Seal? It's one of the most common questions we get here at JRC: which way do I install this oil seal? Get it backwards and you'll be chasing a leak — or worse, losi … 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

Motorcycle Oil and Clutch Friction What Oil Should I Use in My Primary Chaincase? Choosing the right oil for your primary chaincase is one of the most common questions we get at JRC Engineering &mdas … 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

CEI CYCLE THREAD “26 TPI” CEI Thread pdf Cycle Engineers’ Institute (CEI) or British Standard Cycle (BSC) The most common thread on British Cycles prior to 1970. These are th … read more