Tech Blog

From Dave Porter: Technical and Customer Support      In this blog I will cover some information regarding the Amal Concentric MK1…

From Dave Porter, Customer and Tech Support at The Bonneville Shop I have always admired the Norton Commando series of motorcycles, not…

Part 2: Resurrecting a Barn Bike: Hydraulic Brake Restoration (non-ABS) Triumph Hydraulic Brake Restoration By Mike Grage: Tech and Customer Support…

By Mike Grage, Tech and Customer Support at The Bonneville Shop and British Iron Carb Cleaning and TuningFloat Bowl/Fuel System Ventilation:Float Bowl…

By Mike Grage, Tech and Customer Support at The Bonneville Shop and British Iron When I started my career as a…

Lucas 149SA 47SA Ignition Switches Ignition Switches47SA 3-Position Ignition Switch149SA 4-Position Ignition Switch       The Takeaway     The Lucas 3 and 4-position ignition switches…

Dave Porter, Customer Service and Tech Support AMC      Looking back on some of the more revered names in the annals of…

     Triumph T100 Top End – The Conundrum of Triumph C-Range Top-End Compatibility     Unfortunately, I have chosen to take on a…

…setting the timing. The Classic Twin Ignition is suitable for Triumph Unit Twins T100, T120, TR7RV, T140 Bonneville, Tiger, Daytona…

    If you have been searching for seat supply for your vintage British motorcycle as of late, you may find…

Lucas Kill Switches and Cutouts 4A Cutout – Kill Switch: 762080, 76200A, and 762204SS5 – Lucas Kill Switch: 31071, 31376SS5 -…

Norton motorcycle photos from our customers here at The Bonneville Shop. Check out or stock of parts for your Norton….

From Guest Expert: Don Johnson To use an o ring with the gearbox sprocket you must have a high gear spline…

The Imperiled Life of the Kickstarter Cotter Pin One of the hallmarks of vintage BSA and Triumph motorcycles is the…

Triumph and BSA Frame and Engine NumbersWhere are the Frame and Engine Numbers?Registration and Title Documents for Year Make Model    …

If you’re working on setting up dual carbs for your bike, check out this guide. Peg from the UK is…

…specification Triumph 500 and 650 models with 12 volt battery. Ammeter and grommet hole. 5/16-26 CEI bolt holes. 59579S (99-9971A)…

    It’s been said many times that nothing wakes up an old British motorcycle like a new carburetor. Amal carb…

A Bit About Fender Stays “…there are many different configurations of fender stays to be considered when selecting the correct ones…

   Dave Porter, Customer and Tech Support at The Bonneville Shop Barn Bikes Abound – BSA Motorcycles “…not only are they plentiful, but…

Dave Porter, Customer and Tech Support at The Bonneville Shop Work Smarter, Not HarderAdvantages to a Printed Parts CatalogParts Catalog Selection Parts…

Dave Porter, Customer and Tech Support at The Bonneville Shop Steps to Install New Clutch RubbersUsing a Clutch Locking ToolThe Disassembled…

‘Sealing Washers and the Oil-Tight Triumph Engine’ by Dave Porter, Customer and Tech Support at The Bonneville Shop Fiber WashersCopper WashersStat-O-Seal…

…after ruining a few, with no prospects for obtaining replacements. New old stock decals can often be identified by a…

A motorcycle fender will restore your classic Triumph to its true glory. Don’t put an old, compromised fender on your…

Loose Rotor Nut or Rotr Center: Triumph Service Bulletin Twin 9-70 Dave Porter, Customer and Tech Support at The Bonneville…

Winterizing your classic Brit bike is one of the most important things you can do. For those of us living…

The Nuts and Bolts of Hardware By Dave Porter, Customer and Technical Support at The Bonneville Shop “…a factory parts catalog is…

By Dave Porter, Customer and Technical Support at The Bonneville Shop Converting Your 6-volt British Motorcycle to 12-volts can be a…

130 Link 530 Chains By Dave Porter, Customer and Technical Support at The Bonneville Shop   We recently procured a substantial quantity of…

Motorcycle polish: yes or no? Did you just get your hands on a solid barn bike? How long was it…

…on the brake shoes diminishes, the brake control lever has to pull more cable, resulting in a soft front brake….

Buy a bearing race puller today. If you’re doing any motorcycle restoration, having the right tools is essential. Bearings, including…

– For Triumph and BSA forks up to 1970 (up to 1974 on the Triumph 500 twins and some of the…

By Dave Porter, Customer and Technical Support at The Bonneville Shop Table of Contents for triumph top end sealing Resources…

By Dave Porter, Customer and Technical Support at The Bonneville Shop Table of Contents Primary Chaincase Cover: 57-1727 Primary Chaincase…

…for a large increase in carburetor sales, piles of unusable carburetors in dealerships, created a lot of hydrocarbon air pollution,…

‘A Guide for BSA and Triumph Oil Pressure Switch Identification’ By Dave Porter, Customer and Technical Support at The Bonneville…

Pattern Parts and Fettling to Perfection By Dave Porter, Customer and Technical Support at The Bonneville Shop Occasionally I receive inquiries from…

By Mike Grage, Customer and Technical Support at The Bonneville Shop Power FlowPotential Problems with LED TroubleshootingLED Troubleshooting: Using LEDs with…

The 1970 Triumph TR6R Build Continues: Rotor and StatorPrimary Chaintiming cover and outer gearbox The 1970 Triumph TR6R Build Continues: Rotor…

…where the lift is needed, I can move the motorcycle off the lift, if necessary. Having a working front brake…

Table of Contents Doug Hele and the Daytona 1967 – 1969 Triumph Daytona The end of the Classic Triumph Daytona…

By Mike Grage, Customer and Technical Support at The Bonneville Shop The Chrome of Before – Real ChromeLegislative ChangesTrivalent Chrome The Chrome…

By Mike Grage, Customer and Technical Support at The Bonneville Shop Function of Electronic Ignition SystemsTesting Functionality Here at The Bonneville Shop…

1964 Forks – Eliminating Oil Leaks By David Porter, Customer and Technical Support at The Bonneville Shop One topic that comes up…

Table of Contents How to Wire it Up Setting the Timing So, you bought a TBS-0002 Classic Tri-Spark Triples Ignition…

…The beefy 6mm thick stainless steel floating brake disc rotor allows the drilling pattern and cooling slots to contribute to…

BSA Motorcycles: Thunderbolts and Lightning, very, very frightening me! (Galileo) Galileo (Galileo) Galileo… By David Porter, Customer and Technical Support at The…

…relatively inexpensive and are asked to perform a critical function in the clutch assembly, so it is a false economy…

…Sourcing Parts History of the 1978 Triumph Bonneville As any experienced Triumph parts expert will tell you, the 1978 Triumph…

…engine (or any pushrod engine). The first place where this geometric problem can show itself in the difference between the…

UK made fenders from Speedwell Mudguards uses the original tooling and machines to replicate OEM length, width, radius and even…

…all of the electrical wiring, carefully following the instructions. Then they mention setting the engine to the “full advance timing…

…valves to produce the sequence of valvetrain function in the Triumph twin engines. In the beginning, when the first 650cc…

…with the new switchgear. With the advent of directionals, and an eventual electric starter, the switchgear consoles evolved over the…

…tank, the wires are the pipes, the stator is the pump, the key switch is the tap, the zener diode…

…When using our TBS-0041 layshaft bearing drift tool, be sure to place the 57-1607 thrust washer on the locating peg…

…Function of Carburetor Mounting Orings Frequently, confusion arises over which carburetor mounting Orings should be used when fitting Amal Concentric…

By David Porter, Customer and Technical Support at The Bonneville Shop Custom Motorcycle CableChoke and Throttle CablesFront Brake custom motorcycle cable Custom…