Classic and Classy Motorcycles Ltd

Historical Context
The 1979 Triumph Bonneville T140E stands as a testament to the enduring legacy of British motorcycle craftsmanship. In an era dominated by the rise of Japanese manufacturers, the Bonneville managed to retain its charm and appeal, thanks to its blend of traditional styling, reliable performance, and a distinctive riding experience. The "E" in T140E denotes the model's compliance with new U.S. environmental regulations, making it one of the first Triumph bikes to feature an electronic ignition system.

Technical Specifications and Performance

• Year: 1979

• Make: Triumph

• Model: Bonneville T140E

• Engine displacement: 750cc

• Engine type: Air-cooled, four-stroke, parallel-twin

• Compression ratio: 7.9:1

• Carburetion: Twin Amal Concentric carburetors

• Ignition system: Electronic ignition

• Cooling system: Air-cooled

• Fuel capacity: 3.8 US gallons

• Wheelbase: 58 inches

• Horsepower: 49 bhp @ 6,200 rpm

• Torque: 44 lb-ft @ 3,700 rpm

• Transmission type: 5-speed manual

• Frame type: Steel tubular double cradle

• Suspension system: Telescopic fork (front), twin shocks with adjustable preload (rear)

• Braking system: Dual disc brakes (front), single disc brake (rear)

• Dry Weight: Approximately 430 lbs

Enduring Appeal
The Bonneville T140E's appeal lies in its timeless design and the visceral riding experience it offers. It represents the quintessence of the classic British twin, with its distinctive exhaust note, tactile power delivery, and lithe handling characteristics. Enthusiasts and collectors cherish the T140E for its historical significance and its capacity for offering a pure, unadulterated motorcycling experience.

Preservation and Restoration
Preserving or restoring a 1979 Triumph Bonneville T140E involves a commitment to authenticity and attention to detail. Restoration projects often focus on reviving the motorcycle to its original condition, which includes sourcing genuine parts, meticulously refurbishing the engine and chassis, and applying period-correct finishes. Success in these endeavors not only preserves a piece of motorcycling history but also enhances the bike's value and appeal.

Customization Potential
While the T140E is highly valued in its original form, its straightforward design and mechanical simplicity also make it a popular base for customization. The Bonneville can be transformed into a cafe racer, bobber, or custom classic, reflecting the owner's personal style while maintaining the essence of what makes the Bonneville iconic.

Challenges and Considerations
Engaging in a restoration or customization project of a vintage motorcycle like the T140E presents challenges, including sourcing rare parts and addressing the nuances of older engine technology. Balancing modern performance upgrades with the preservation of the bike's classic character requires careful planning and respect for the original design.

Conclusion
The 1979 Triumph 750cc Bonneville T140E remains a beloved model among motorcycle enthusiasts, representing a high point in the evolution of the classic British twin. Whether kept in pristine condition, lovingly restored, or thoughtfully customized, the T140E continues to be a symbol of motorcycle heritage, celebrated for its beauty, simplicity, and enduring appeal.