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 -…

…Doug In Fl Joe – A 73 Norton Commando I Saved From A Chopper – Norton Motorcycle Photos Joe –…

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 kickstart…

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

…Cables Triumph Carb Tuning Basics Triumph Service Bulletin 10-69 Carburetor Mounting O-rings Fit New Concentric Carbs With Old Cables Triumph…

By Dave Porter, Customer and Technical Support at The Bonneville Shop Table of Contents for Triumph Headlamp ShellsLucas SS 700 7”Lucas…

…patience and dexterity. When chokes are employed, I prefer fitting the choke cable to the choke block first, then installing…

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…

…of their sealing properties due to distortion. Stat-O-Seal and Dowty Washers Stat-O-Seal and Dowty washers are a metal washer with…

Dave Porter, Customer and Tech Support at The Bonneville Shop There are 4 basic steps on how to apply a waterslide…

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…

…Triumph twin, and there is not enough inner wire free length for the original cable to let the slide drop…

…Removal Tool 1 Our service tools offer the following: Quality Ease of Use Protect Your Motorcycle Varied Y/M/M Applications 1….

– 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 Primary Chaincase Cover: 57-1727 Primary Chaincase Cover: 57-2439 Primary Chaincase Cover: 71-7465 The…

…a rule in 1980 that idle mixture screws had to be sealed off. This decision was made based on the…

…to 70-8797 for the 1968 model year, perhaps due to the change in thread form of the contact breaker plate…

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…

The 4th One – 1970 Triumph TR6R RepairFinding a Barn BikeDisassemblyEvaluating the Parts and PrepWheels and forksEngine Cases, Crank and…

…specification and the associated seals, as well as the depth of the port for the top of the pushrod tube….

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…

By Mike Grage, Customer and Technical Support at The Bonneville Shop How to Wire it UpSetting the Timing So, you bought a…

SpecsFitment ChallengesSolutions We have recently taken delivery and sold through our initial shipment of Girling’s new 37-4275G Stainless Floating Brake Disc…

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

By David Porter, Customer and Technical Support at The Bonneville Shop Clutch Plates AND Springs Clutch Plates When evaluating the clutch plates and…

By David Porter, Customer and Technical Support at The Bonneville Shop Table of Contents History of the 1978 Triumph Bonneville…

Checkout Cam Timing Notes Part I here and The Brain of Your Triumph B Range Engine- the Camshaft. Cam Timing ContentsCheckout Cam…

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

By David Porter, Customer and Technical Support at The Bonneville Shop Establishing Ignition TimingConverting to an Electronic IgnitionFully Advanced Timing PositionUsing…

…the 71-7016 inlet and 71-7017 exhaust camshafts for direct replacement in the 1977-1982 750 models, although they are suitable for…

By David Porter, Customer and Technical Support at The Bonneville Shop Lucas Console Switchgear Guide The Back Story During the late 1960s, the…

By Mike Grage, Customer and Technical Support at The Bonneville Shop How it Produces ElectricityStator TestingRectifier TestingRegulator Testing 12 Volt Charging System…

Layshaft Needle Bearing Installation Tool By David Porter, Customer and Technical Support at The Bonneville Shop Installation InstructionsShop The Layshaft Need Bearing…

…the forthcoming 1970 model year, which also saw the introduction of the thick 70-9711 carburetor flange O-ring, and the omission…

…is being renovated and requires cables that haven’t been available for decades. The solution for this problem is to simply…