Hey guys! Today, we're diving deep into the Honda CB450 DX 1990, a bike that holds a special place in the hearts of many riders. Whether you're a seasoned enthusiast or just curious about this classic machine, let’s explore everything it has to offer, from its technical specifications (ficha tecnica) to its overall performance and historical context.

Honda CB450 DX 1990 Technical Specifications

When we talk about the Honda CB450 DX 1990, the technical specifications are where the magic truly lies. Understanding these details helps us appreciate the engineering and design that went into making this bike a standout model of its time. Let's break down the key components:

• Engine: At the heart of the CB450 DX is its 447cc, air-cooled, parallel-twin engine. This engine configuration was chosen for its balance of performance and reliability. The parallel-twin design provides a good amount of torque, making it suitable for both city commuting and longer rides. The air-cooling system simplifies maintenance and reduces the overall weight of the motorcycle.

• Bore and Stroke: The engine features a bore of 70.5 mm and a stroke of 57.8 mm. These dimensions are crucial for understanding the engine's characteristics. A slightly oversquare design (where the bore is larger than the stroke) typically indicates a rev-happy engine that performs well at higher RPMs. This contributes to the bike's sporty feel and responsiveness.

• Compression Ratio: The compression ratio of 9.0:1 is another critical factor. This ratio affects the engine's efficiency and power output. A compression ratio of 9.0:1 is relatively moderate, making the engine compatible with standard fuel grades and enhancing its longevity. It strikes a balance between performance and durability, ensuring the engine can withstand regular use without excessive wear.

• Fuel System: The CB450 DX utilizes two Keihin carburetors to deliver fuel to the engine. Carburetors were the standard fuel delivery system at the time, and Keihin was a reputable manufacturer known for producing reliable and efficient carbs. The dual-carb setup ensures each cylinder receives an adequate fuel-air mixture, optimizing combustion and overall engine performance. Carburetors require periodic tuning and maintenance to ensure they function correctly, but they offer a simple and effective way to manage fuel delivery.

• Ignition System: The bike features a transistorized ignition system, which provides a more reliable and consistent spark compared to older, points-based systems. This electronic ignition system reduces the need for frequent maintenance and ensures the engine starts easily and runs smoothly. The transistorized ignition system was a significant advancement at the time, contributing to the bike's overall reliability and ease of use.

• Transmission: The six-speed gearbox on the CB450 DX is a standout feature. The wide range of gears allows the rider to optimize the engine's power output for various riding conditions. Whether you're cruising on the highway or navigating city streets, the six-speed transmission provides the flexibility needed to maintain optimal performance and fuel efficiency. The smooth shifting action of the gearbox enhances the overall riding experience.

• Frame: The CB450 DX is built around a steel frame, which provides a sturdy and stable platform for the engine and suspension components. The frame's design contributes to the bike's handling characteristics, offering a good balance of stability and agility. The steel frame is robust and can withstand the stresses of regular use, ensuring the bike remains reliable over the long term.

• Suspension: The front suspension consists of telescopic forks, while the rear features a swingarm with dual shock absorbers. This suspension setup provides a comfortable and controlled ride, absorbing bumps and irregularities in the road surface. The front forks offer adequate damping, while the rear shocks can be adjusted to suit different riding conditions and preferences. The suspension system works in harmony to provide a stable and predictable ride.

• Brakes: The CB450 DX is equipped with a single disc brake at the front and a drum brake at the rear. While disc brakes offer superior stopping power compared to drum brakes, the combination of a front disc and rear drum was a common setup for bikes of this era. The front disc brake provides the majority of the stopping power, while the rear drum brake assists in maintaining stability and control. Regular maintenance of the brakes is essential to ensure they function correctly and provide adequate stopping power.

• Weight: The bike has a dry weight of approximately 179 kg (395 lbs). This weight is reasonable for a motorcycle of this size and type. The relatively lightweight design contributes to the bike's nimble handling and ease of maneuverability. The weight distribution is well-balanced, further enhancing the bike's stability and control.

• Fuel Capacity: The fuel tank capacity is around 16 liters (4.2 gallons), providing a decent range for both city and highway riding. This fuel capacity allows riders to undertake longer journeys without the need for frequent refueling stops. The fuel tank's design is both functional and aesthetically pleasing, complementing the bike's overall appearance.

Performance and Handling

Beyond the raw specifications, the performance and handling of the Honda CB450 DX are critical to understanding its appeal. This bike wasn't just about looking good; it was designed to deliver a rewarding riding experience. Here’s what you can expect:

• Engine Performance: The 447cc parallel-twin engine provides a smooth and predictable power delivery. The engine is particularly strong in the mid-range, making it ideal for overtaking and maintaining a comfortable cruising speed. While it may not have the raw power of larger displacement motorcycles, the CB450 DX offers a balanced and enjoyable riding experience.

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• Handling: Thanks to its well-designed frame and suspension, the CB450 DX handles with confidence and precision. The bike is easy to maneuver in urban environments and remains stable at higher speeds. The suspension system effectively absorbs bumps and irregularities in the road surface, providing a comfortable and controlled ride. Whether you're navigating city streets or carving through twisty roads, the CB450 DX offers a responsive and engaging handling experience.

• Braking: The front disc brake provides adequate stopping power for most riding situations. However, the rear drum brake requires more effort and may not offer the same level of performance as a disc brake. Regular maintenance of the braking system is essential to ensure it functions correctly and provides adequate stopping power. Upgrading the rear brake to a disc brake can significantly improve the bike's overall braking performance.

• Riding Comfort: The CB450 DX offers a comfortable riding position that is suitable for both short commutes and longer rides. The seat is well-padded, and the handlebars are positioned to provide a relaxed and natural riding posture. The suspension system effectively absorbs bumps and vibrations, further enhancing the bike's comfort. Whether you're commuting to work or embarking on a weekend adventure, the CB450 DX offers a comfortable and enjoyable riding experience.

Historical Context and Legacy

The Honda CB450 DX 1990 wasn't just another motorcycle; it represented a significant chapter in Honda's history. Understanding its historical context helps us appreciate its design and engineering.

• Evolution of the CB Series: The CB450 DX was part of Honda's renowned CB series, which included a range of motorcycles known for their reliability, performance, and innovation. The CB series played a crucial role in establishing Honda as a leading motorcycle manufacturer worldwide. The CB450 DX built upon the success of its predecessors, incorporating advanced technologies and design features.

• Technological Advancements: The CB450 DX incorporated several technological advancements for its time, including a transistorized ignition system, a six-speed gearbox, and a front disc brake. These features contributed to the bike's overall performance, reliability, and ease of use. The CB450 DX was at the forefront of motorcycle technology, setting new standards for the industry.

• Market Impact: The CB450 DX was a popular choice among riders of all skill levels, thanks to its balanced performance, comfortable riding position, and affordable price. The bike was widely used for commuting, touring, and recreational riding. The CB450 DX had a significant impact on the motorcycle market, influencing the design and engineering of future models.

Maintaining Your Honda CB450 DX 1990

If you're lucky enough to own a Honda CB450 DX 1990, keeping it in top condition requires regular maintenance. Here are some essential tips:

• Regular Oil Changes: Changing the engine oil and filter at the recommended intervals is crucial for maintaining engine performance and longevity. Use high-quality oil that meets the manufacturer's specifications.

• Carburetor Maintenance: The carburetors require periodic cleaning and tuning to ensure they function correctly. A professional mechanic can help you with this task.

• Brake Maintenance: Inspect the brake pads, discs, and drums regularly, and replace them as needed. Ensure the brake fluid is clean and at the correct level.

• Chain Maintenance: Keep the chain clean, lubricated, and properly adjusted to ensure smooth power delivery and prevent premature wear.

• Tire Maintenance: Check the tire pressure regularly and inspect the tires for wear and damage. Replace the tires when they reach the end of their service life.

Conclusion

The Honda CB450 DX 1990 is more than just a motorcycle; it's a piece of history. Its blend of performance, reliability, and classic design makes it a sought-after machine for collectors and enthusiasts alike. Whether you're restoring one to its former glory or simply appreciating its legacy, the CB450 DX is a bike that deserves respect and admiration. So next time you see one, take a moment to appreciate the engineering and design that went into making this iconic motorcycle.