🏷️ Basic Information Identification Make: BMW Model: Isetta Model Nickname: Bubble Car Production Variant: Isetta 750 Codes License Reference: hhs00354 wav download 👋 Introduction Market Position Market Segment: Post-war microcar, urban mobility solution. Competitive Analysis Key Competitors: Fiat 500 Topolino, Messerschmitt KR200, Heinkel Kabine, Goggomobil. Key Features Distinguishing Features: Front-opening door, compact footprint, unique bubble canopy design, efficient and economical operation. Audio Use Case Intended Use: Royalty-free sound clips for media projects, film, video games, advertising, and sound design. 📋 Manual Details Coverage Areas Systems Covered: Audio Sound Recording of Engine Start-up and Shut-off Page Count Page Count: N/A (Audio File) Manual Type Manual Type: Audio Sound File (Royalty-Free) Language Language: N/A (Audio) Format Format: WAV 📖 Manual Coverage Systems Covered Covered Systems: BMW Isetta 750 Engine Sound (Arrival/Start-up and Shut-off) Procedures Included Included Procedures: Sound recording of specific vehicle operational states (engine ignition, engine stopping) Technical Depth Technical Depth: High fidelity audio capture of operational sounds. 📊 Manual Specifications File Format File Format: WAV Print Quality Print Quality: N/A (Digital Audio) Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Media Compatibility Media Compatibility: Mac, Windows, Linux ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, four-stroke, air-cooled gasoline engine. Engine Displacement: 745 cc (for the 750 variant). Bore X Stroke: Approx. 95 mm x 106 mm (typical for the 745cc engine). Performance Horsepower: Approximately 20-24 hp (for the 750 variant). Torque: Not typically a primary metric highlighted; focus on usability. Fuel System Carburetor: Single downdraft carburetor (e.g., Solex or similar). Ignition Ignition Type: Battery and coil ignition system. Cooling System Cooling Method: Air-cooled. 🔧 Transmission Standard Transmission Type: Four-speed manual transmission. Optional Optional Transmission: None specified for this variant. Features Gear Selection: Steering column mounted shifter. Drivetrain Drive Layout: Rear-wheel drive. Clutch Clutch Type: Single-plate dry clutch. 📐 Dimensions Exterior Length: Approx. 2,280 mm (90 in). Width: Approx. 1,370 mm (54 in). Height: Approx. 1,300 mm (51 in). Wheelbase: Approx. 1,500 mm (59 in). Ground Clearance: Approx. 120 mm (4.7 in). Interior Seating Capacity: 2 people (driver and one passenger). Weights Curb Weight: Approx. 350-400 kg (770-880 lbs). Gross Vehicle Weight: Not explicitly stated; designed for low payload. 🛡️ Safety Features Ratings Crash Test Ratings: N/A (historical context, pre-modern safety standards). Active Features Braking System: Four-wheel hydraulic drum brakes. Steering: Direct steering, no power assistance. Passive Features Seatbelts: Not standard equipment on early models. Body Structure: Integrated steel chassis with body panels, providing basic occupant protection. Lighting Headlights: Single round headlights, typically halogen. 💡 Technology Features Infotainment Infotainment System: Basic AM radio (optional), no integrated infotainment as understood today. Driver Assistance Driver Assistance Features: None. Connectivity Connectivity Features: None. Comfort Features Heating: Optional heater, often engine-driven or a separate unit. Windows: Pop-out side windows for ventilation, no power windows. 🔧 Maintenance Service Intervals Oil Change Interval: Approximately every 3,000 - 5,000 km (1,800 - 3,000 miles) or annually. Tune Up Interval: As needed, typically based on spark plug condition, carburetor adjustment, and ignition timing. Fluid Specifications Engine Oil Type: SAE 20W-50 or SAE 30W (depending on ambient temperature and manufacturer recommendation for the era). Engine Oil Capacity: Approx. 1.75 liters (1.8 US quarts). Transmission Fluid Type: Gear oil (e.g., SAE 90). Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid (specific to DOT system of the era). Fuel Type: Unleaded gasoline (octane rating appropriate for the era, typically lower than modern fuels). Known Issues Common Problems: Rust susceptibility (especially in floor pan and sills), electrical system reliability, carburetor tuning, clutch wear, engine overheating due to air-cooling limitations in prolonged traffic. Parts Availability Part Availability Notes: Specialized parts, often requiring sourcing from classic car specialists or restoration suppliers. 📚 Vehicle History Brand Heritage Manufacturer Origin: Germany. Founding Year: 1916. Model Evolution Design Inspiration: Designed by Iso Autoveicoli (Italy), licensed by BMW. Original Engine: Originally powered by a 236 cc scooter engine. Engine Upgrade Context: The 750cc engine was developed by BMW to offer improved performance and power for the growing demand for such vehicles. Production Production Period: 1955-1962 (BMW Isetta). Production Locations: Munich, Germany; also licensed for production in UK, France, Spain, Brazil, and USA. Total Production Units: Over 160,000 units sold across all variants. 🏆 Awards & Recognition Recognitions Historic Significance: Iconic symbol of post-war European economic recovery and personal mobility. Ratings Fuel Economy: Exceptional for its time, often exceeding 50 mpg (approx. 4.7 L/100km). Certifications Design Awards: Not formally awarded, but widely recognized for its innovative and charming design.