Positioning:
The Harley-Davidson Dyna Street Bob is positioned as a minimalist, stripped-down cruiser with a classic bobber aesthetic, appealing to riders seeking raw performance and a customizable platform.
Competition:
Competes with other mid-size cruisers from brands like Indian, Victory (now defunct), and some Japanese manufacturers offering similar styling and V-twin engines.
Features:
Signature blacked-out styling, chopped front fender, solo seat, drag-style handlebars, and the potent Twin Cam 103 engine.
Engine:
Twin Cam 103 (1690cc), engine disassembly, assembly, tuning, diagnostics, and component replacement.
Transmission:
6-speed Cruise Drive transmission, disassembly, assembly, maintenance, and troubleshooting.
Fuel System:
Electronic Sequential Port Fuel Injection (ESPFI), fuel pump, injectors, throttle body, sensors, and diagnostics.
Ignition System:
Ignition module, spark plugs, coils, timing, and troubleshooting.
Electrical System:
Wiring diagrams, battery, charging system (alternator, regulator), lighting, starting system, and accessories.
Brakes:
Front and rear brake systems, hydraulic lines, calipers, master cylinders, pads, rotors, and bleeding procedures.
Suspension:
Front fork (telescopic) overhaul, rear shock absorbers, springs, and adjustments.
Wheels Tires:
Wheel bearing maintenance, tire replacement, balancing, and specifications.
Frame Bodywork:
Frame inspection, body panel removal and installation, fenders, fuel tank, seat, and handlebars.
Exhaust System:
Exhaust pipes, mufflers, catalytic converter (if applicable), and gasket replacement.
Diagnostics:
Diagnostic trouble codes (DTCs), Harley-Davidson Digital Technician II (могоf) procedures, and troubleshooting flowcharts.
Maintenance:
Routine maintenance, oil changes, filter replacement, spark plug service, chain adjustment (if applicable), brake fluid changes, and periodic inspections.
Repair:
Complete engine, transmission, primary drive, clutch, brakes, electrical, and chassis component repair and overhaul.
Troubleshooting:
Systematic troubleshooting guides for common and complex issues, symptom-based diagnostics.
Disassembly Assembly:
Detailed step-by-step instructions for complete disassembly and reassembly of major motorcycle components.
Special Tools:
Identification and usage instructions for specialized Harley-Davidson tools required for specific procedures.
Depth:
In-depth technical procedures suitable for professional technicians and experienced DIY mechanics, covering full engine rebuilds and complex electrical diagnostics.
Engine Type:
Air-cooled, Twin Cam 103 V-twin
Displacement:
103 cu in (1690 cc)
Bore X Stroke:
3.875 in x 4.38 in (98.4 mm x 111.3 mm)
Valve Train:
Overhead valves (OHV), 2 valves per cylinder
Horsepower:
Approx. 70-75 HP (claimed, at crankshaft)
Torque:
Approx. 96-100 lb-ft (claimed, at crankshaft)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
91 octane (R+M)/2 or higher recommended
Crash Test Ratings:
Motorcycles are not subject to the same federal crash test ratings as automobiles. Safety is assessed through design, component integrity, and rider skill.
Braking System:
Hydraulic disc brakes front and rear, typically single disc front and rear for the FXDB model. Anti-lock Braking System (ABS) was an optional feature for certain 2013 Dyna models, but not standard on the FXDB.
Lighting:
Halogen headlight, LED taillight, and incandescent turn signals.
Infotainment System:
Base model; typically no integrated infotainment system beyond basic gauges (speedometer, tachometer, fuel gauge, indicator lights). Audio systems were aftermarket options.
Driver Assistance Features:
No electronic driver assistance features like traction control or stability control standard on the FXDB model. ABS was an option.
Connectivity Options:
No standard connectivity features. Some models may have had provisions for aftermarket accessory chargers or infotainment integration.
Initial Service:
First service recommended at 1,000 miles (1600 km) for oil change, primary chain case check, and general inspection.
Oil Change Interval:
Every 5,000 miles (8,000 km) or annually, whichever comes first.
Transmission Oil Change:
Every 10,000 miles (16,000 km) or annually.
Primary Chain Case Oil Change:
Every 10,000 miles (16,000 km) or annually.
Spark Plug Replacement:
Typically every 10,000-15,000 miles (16,000-24,000 km).
Engine Oil:
Harley-Davidson Genuine V-Twin 20W-50 Synthetic (or equivalent) - approximately 4 quarts (3.8 L) with filter change.
Transmission Oil:
Harley-Davidson Formula + Transmission and Primary Chaincase Lube (or equivalent) - approximately 1 quart (0.95 L).
Primary Chaincase Oil:
Harley-Davidson Formula + Transmission and Primary Chaincase Lube (or equivalent) - approximately 2.8 pints (1.3 L).
Brake Fluid:
DOT 4 Harley-Davidson Premium Synthetic Brake Fluid (or equivalent) for hydraulic clutch and brake systems.
Common Issues:
Potential for oil leaks from primary cover or engine seals, normal clutch adjustment requirements, and potential need for fuel mapping adjustments with aftermarket exhaust or intake modifications.
Heritage:
Harley-Davidson boasts a rich heritage dating back to 1903, renowned for its iconic V-twin engines and cruiser motorcycle dominance.
Dyna Lineage:
The Dyna family, introduced in 1991, represented a blend of classic styling with modern technology and a rubber-mounted engine for reduced vibration. The Street Bob (FXDB) model was introduced in 2006 and quickly became a popular choice for its customization potential and minimalist design.
Manufacturing Location:
Assembly typically performed at the Harley-Davidson Vehicle and Powertrain Operations facility in Milwaukee, Wisconsin, and Kansas City, Missouri, USA.
