Triumph 650 twin Bonneville tiger & trophy owners handbook

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🏷️ Basic Information Identification Make: Triumph Model: 650 Twin (Bonneville, Tiger, Trophy) Model Variants: Bonneville T120R, Tiger TR6R, Trophy TR6C Codes Model Year Code: 1971 👋 Introduction Market Position Era...

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Taper: Motorcycle

Distributeur:

UGS: 200192

Mots clés: 650 twin Bonneville Cars Motorcycle tiger TR Models Triumph trophy

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Triumph

Model:

650 Twin (Bonneville, Tiger, Trophy)

Model Variants:

Bonneville T120R, Tiger TR6R, Trophy TR6C

Codes

Model Year Code:

👋 Introduction

Market Position

Era Context:

Represents the golden age of British motorcycles, with Triumph's 650cc parallel twin engines powering iconic models sought after by enthusiasts.

Competitive Analysis

Competitors Engine Size:

Competed directly with other 650cc British twins (e.g., BSA) and early Japanese four-cylinder offerings.

Key Features

Model Significance:

The Bonneville, Tiger, and Trophy were all derivatives of Triumph's robust 650cc parallel twin engine, offering varying levels of performance and intended use.

Manual Importance:

Essential for owners of these classic motorcycles to understand basic operation, maintenance, and care to preserve their condition and functionality.

📋 Manual Details

Coverage Areas

Primary Coverage:

Owner's Handbook for Triumph 650 Twin models

Specific Models Covered:

Bonneville T120R, Tiger TR6R, Trophy TR6C

Model Year Coverage:

Page Count

Estimated Page Count:

Approximately 60-80 pages (typical for period owner's handbooks)

Manual Type

Type:

Owner's Handbook

Language

Language:

English

Format

Format:

Printed Booklet

📖 Manual Coverage

Systems Covered

Engine:

Operation, basic adjustments, lubrication

Transmission:

Operation, basic maintenance (oil levels)

Fuel System:

Carburetor identification, fuel handling

Electrical System:

Ignition timing basics, lighting operation, battery care

Chassis And Suspension:

Tire pressures, chain adjustment, basic lubrication points

Braking System:

Operation, fluid checks (if applicable for the era)

Procedures Included

Maintenance:

Routine checks, lubrication points, cleaning instructions

Operation:

Starting procedure, gear shifting, riding advice

Troubleshooting:

Basic operational issues, minor adjustments

Safety:

Riding safety, pre-ride checks

Technical Depth

Depth:

Basic Owner Information and Operation

Scope:

Focuses on day-to-day ownership, pre-ride checks, and basic user-level adjustments rather than in-depth mechanical repair.

📊 Manual Specifications

File Format

Type:

Physical Print

Print Quality

Quality:

Original factory print quality (may vary with age/condition of the specific item)

Binding Type

Binding:

Staple-bound or perfect bound booklet

Paper Type

Paper:

Standard newsprint or low-gsm paper typical of 1970s handbooks

⚙️ Engine Specifications

Primary Engine

Type:

Air-cooled, parallel-twin

Displacement:

649 cc (39.6 cubic inches)

Bore X Stroke:

71 mm x 82 mm (2.79 in x 3.23 in)

Compression Ratio:

Approx. 8.5:1 (varies slightly by model/tune)

Valve Gear:

Overhead valve (OHV), pushrod operated

Performance

Horsepower:

Approx. 52-55 bhp (38.8-41 kW) @ 7,000 rpm (T120R Bonneville)

Torque:

Approx. 44 ft-lbs (59.7 Nm) @ 5,000 rpm (estimated)

Fuel System

Carburetors:

Two Amal concentric carburetors (typically 30mm or 32mm depending on model)

Fuel Type:

Unleaded gasoline (high octane, 91 RON or higher recommended for modern use)

Lubrication

System:

Wet sump (with oil tank integrated into crankcase)

Oil Capacity:

Approx. 4 pints (1.9 liters)

🔧 Transmission

Standard

Type:

4-speed constant mesh

Gear Ratios:

Refer to specific model data; typical ratios around 3.0:1 in top gear.

Features

Clutch:

Multi-plate, wet type, cable operated

Final Drive:

Chain drive

📐 Dimensions

Exterior

Wheelbase:

Approx. 57 inches (1450 mm)

Length:

Approx. 85 inches (2160 mm)

Weights

Dry Weight:

Approx. 390-430 lbs (177-195 kg) depending on model and equipment

Fuel Tank Capacity:

Approx. 3.5 US gallons (13.2 liters)

🛡️ Safety Features

Ratings

Era Standards:

No formal crash safety ratings in the modern sense; emphasis on rider skill and mechanical integrity.

Active Features

Braking System:

Front: Single disc brake (T120R, TR6R). Rear: Drum brake.

Lighting:

Headlight, tail light, brake light, turn signals (may vary by market/spec)

Passive Features

Frame Type:

Duplex cradle frame

💡 Technology Features

Infotainment

Features:

N/A - This is a classic motorcycle from an era before electronic infotainment systems.

Driver Assistance

Features:

N/A - No electronic driver assistance systems.

Connectivity

Features:

N/A - No electronic connectivity features.

🔧 Maintenance

Service Intervals

Oil Change:

Every 2,000-3,000 miles (3,000-5,000 km) or 6 months. Check level more frequently.

Chain Lubrication:

Every 500 miles (800 km) or after riding in wet conditions. Adjust tension as needed (typically 0.5-0.75 inch free play).

Spark Plugs:

Check and clean/gap every 3,000 miles (5,000 km). Replace as needed.

Fluid Specifications

Engine Oil:

SAE 20W/50 or SAE 30 (API CD or earlier spec, e.g., SE/CC). Avoid modern synthetic oils unless specifically formulated for classic motorcycles with wet clutches.

Primary Chaincase Oil:

Gearbox oil (e.g., SAE 80W/90 GL-4) or dedicated motorcycle gearbox oil.

Known Issues

Oil Leaks:

Common from crankshaft seals, valve guides, and primary chaincase seals due to age and material degradation.

Carburetor Tuning:

Amal concentric carbs can be finicky and require regular fine-tuning for optimal performance.

Valve Adjustment:

Periodic valve clearance checks and adjustments are necessary.

Electrical Reliability:

Lucas electrical components can be prone to issues; maintaining clean connections and proper grounds is crucial.

Transmission Shifting:

Can be stiff; proper clutch adjustment and lubricant are important.

📚 Vehicle History

Brand Heritage

Triumph Legacy:

Triumph Motorcycles has a long and storied history, dating back to 1902, renowned for its parallel-twin engines and iconic models like the Bonneville.

Model Evolution

650Cc Twins:

The 650cc twin was first introduced in 1949 and evolved through the decades, with the 1971 models representing a mature and refined iteration before the company's turbulent later years.

Production

Manufacturing Location:

Meriden, Warwickshire, England

1971 Significance:

The 1971 models were part of a significant period for Triumph, just before the troubled merger with BSA and the eventual closure of the Meriden factory.

🏆 Awards & Recognition

Recognitions

Model Recognition:

The Triumph 650 twin models, particularly the Bonneville, are widely recognized as automotive icons and are highly sought after by collectors and enthusiasts worldwide.