How Many CC is a Harley-Davidson 750?
A Harley-Davidson 750, more specifically the Harley-Davidson Street 750, has an engine displacement of **749 cubic centimeters (cc)**.
Understanding the Harley-Davidson 750: Engine Size and More
For many motorcycle enthusiasts, and even those just starting to explore the world of two-wheeled freedom, understanding the specifications of a bike is key to appreciating its capabilities. Among the most frequently asked questions, especially for those eyeing an entry into the iconic Harley-Davidson brand, is about the engine size of its smaller offerings. The Harley-Davidson 750, primarily referring to the Street 750 model, is a prominent example. Let’s dive deep into what the “750” in its name signifies and explore the various aspects of this popular motorcycle.
What Does “750 cc” Actually Mean?
When we talk about a motorcycle’s engine size, specifically in cubic centimeters (cc), we are referring to its displacement. Engine displacement is a measure of the volume swept by all the pistons inside the cylinders of an engine. In simpler terms, it’s the total capacity of the engine to hold fuel and air mixture that gets ignited to produce power.
So, when a Harley-Davidson is designated as a “750,” it means its engine has a total volume of 749 cc. This number is a crucial indicator of a motorcycle’s potential performance. Larger displacement generally implies a more powerful engine, capable of producing more torque and horsepower, which translates to quicker acceleration and higher top speeds.
The Harley-Davidson Street 750: A Gateway to the Brand
The Harley-Davidson Street 750 was introduced as a more accessible and urban-friendly option for riders looking to experience the Harley-Davidson lifestyle without the heft of their larger, traditional models. It was designed to be nimble, easy to handle, and more affordable, making it an attractive choice for:
- New riders getting their first Harley-Davidson.
- City dwellers who need a bike that can navigate traffic with ease.
- Riders seeking a stylish and comfortable cruiser for shorter trips.
The 749 cc Revolution X engine that powered the Street 750 was specifically developed to meet these needs. It’s a liquid-cooled, 60-degree V-twin engine, which is a departure from the air-cooled engines that are more traditionally associated with Harley-Davidson’s larger touring and cruiser bikes.
Key Features of the Street 750’s Engine:
- Engine Type: Revolution X V-twin
- Cooling: Liquid-cooled
- Displacement: 749 cc
- Configuration: 60-degree V-twin
- Valvetrain: Single overhead camshaft (SOHC) with 2 valves per cylinder
This engine was tuned for a smooth, accessible power delivery, focusing on low-end torque that’s ideal for city riding and relaxed cruising. While it might not possess the roaring power of Harley’s larger displacement engines (like the Milwaukee-Eight 107 or 114), the 749 cc V-twin provides enough oomph for enjoyable rides on highways and through scenic routes.
Harley-Davidson Engine Sizes: A Comparative View
To put the 749 cc displacement into perspective, it’s helpful to compare it with other popular Harley-Davidson models. This comparison can highlight the Street 750’s positioning within the brand’s lineup.
Smaller Displacement Engines (Relative to Street 750):
- Harley-Davidson 500 (Street 500): This model, often sold in specific markets, features a smaller 494 cc Revolution X engine, making it even more entry-level and beginner-friendly.
Larger Displacement Engines (Common in Harley-Davidson):
- Sportster Iron 883: Typically features an 883 cc (approx. 883 cc) air-cooled Evolution engine.
- Sportster Iron 1200: Features a 1200 cc (approx. 1202 cc) air-cooled Evolution engine.
- Softail Standard/Street Bob/Fat Bob (with Milwaukee-Eight 107): These models come with the Milwaukee-Eight 107 engine, which has a displacement of 1746 cc.
- Touring Models (Road King, Ultra Limited, etc., with Milwaukee-Eight 114/117): Larger touring bikes often feature the Milwaukee-Eight 114 (1868 cc) or even the Milwaukee-Eight 117 (1923 cc).
As you can see, the 749 cc engine of the Street 750 is significantly smaller than the engines found in most of Harley-Davidson’s iconic models. This difference in displacement is a deliberate design choice, targeting a specific rider demographic and use case.
Performance Implications of 749 cc
The 749 cc displacement of the Street 750 has a direct impact on its performance characteristics:
Power Delivery:
The engine is designed for a broad, usable powerband, meaning it delivers good torque from lower RPMs. This is perfect for city riding, making it easy to get off the line and maneuver in traffic. It provides a responsive feel without being overwhelming for newer riders.
Acceleration:
While not a performance-oriented sportbike, the Street 750 offers adequate acceleration for its class. It can comfortably merge onto highways and keep pace with most traffic. However, compared to larger displacement Harleys, its acceleration will be more modest.
Top Speed:
The top speed of a Street 750 is sufficient for legal highway speeds and a bit beyond. Riders generally find it capable for longer rides, though sustained high-speed cruising might not be its strongest suit compared to models with larger engines.
Fuel Efficiency:
Generally, smaller displacement engines tend to be more fuel-efficient. The 749 cc Revolution X engine in the Street 750 often delivers better miles per gallon (MPG) compared to larger Harley-Davidson models, making it an economical choice for daily commuting and regular use.
“The 749 cc engine in the Harley-Davidson Street 750 is a smart compromise. It offers enough power for a spirited ride while remaining approachable for beginners and cost-effective to run.”
The Revolution X Engine: A Closer Look
The Revolution X engine, which powers the Street 750 (and its smaller sibling, the Street 500), is a significant engineering effort by Harley-Davidson. Here are some key aspects:
- Liquid Cooling: Unlike the classic air-cooled Evolution engines found in many other Harley-Davidson models, the Revolution X uses liquid cooling. This helps to keep the engine temperatures more stable, especially in demanding urban environments or hot weather, leading to more consistent performance and potentially longer engine life.
- V-Twin Architecture: It maintains the iconic V-twin configuration that Harley-Davidson is famous for, contributing to the characteristic rumble and feel of a Harley, albeit a slightly different character than its air-cooled counterparts.
- SOHC: The single overhead camshaft (SOHC) design is simpler and lighter than a dual overhead camshaft (DOHC) system, which aligns with the Street 750’s objective of being more accessible and less mechanically complex.
The development of the Revolution X engine was a strategic move by Harley-Davidson to attract a new generation of riders and tap into emerging global markets where smaller, more agile motorcycles are preferred.
Discontinuation of the Street 750
It’s important to note that the Harley-Davidson Street 750 has been discontinued. While you can still find these bikes on the used market, Harley-Davidson no longer produces them as new models. The focus has shifted to newer platforms and models within the Harley-Davidson lineup, such as the Sportster S and the Nightster, which feature the more modern Revolution Max engine platform.
However, the legacy of the Street 750 and its 749 cc engine lives on. It served its purpose as a vital stepping stone for many riders into the Harley-Davidson family, proving that the brand could offer diverse options to suit a wider range of preferences and needs.
Who is the Harley-Davidson 750 For?
Given its 749 cc displacement and the characteristics of its Revolution X engine, the Street 750 was ideal for:
- Beginner Riders: The manageable power and weight made it a forgiving first motorcycle.
- Urban Commuters: Its agility and fuel efficiency were perfect for navigating city streets.
- Riders on a Budget: It offered a more affordable entry point into the Harley-Davidson brand.
- Customization Enthusiasts: Even with a smaller engine, the Street 750 provided a canvas for personalization, allowing owners to make it their own.
Comparing CC to Rider Experience
The concept of “cc” is often a shorthand for how a motorcycle will feel. While 749 cc is relatively modest in the grand scheme of motorcycles, it’s important to remember that the delivery of power matters just as much as the sheer number.
- Low-End Torque: A 749 cc V-twin like the Street 750’s is often tuned for strong low-end torque, which means it feels punchy and responsive when you twist the throttle from a standstill or at lower speeds. This is often more satisfying for city riding than a high-revving, smaller-cc engine.
- Weight and Handling: The overall weight and the chassis design of a motorcycle play a huge role in how it handles. The Street 750 was designed to be lighter and more nimble than many other Harley-Davidsons, making its 749 cc engine feel perfectly adequate for its intended use.
- Rider Skill: A smaller, more manageable engine like the 749 cc unit can be more enjoyable and less intimidating for a less experienced rider than a much larger, more powerful engine.
So, while the 749 cc figure might seem small compared to some of Harley’s giants, it was the heart of a motorcycle designed to be accessible, enjoyable, and distinctly Harley-Davidson.
Conclusion
In summary, a Harley-Davidson 750, specifically the Street 750 model, is powered by a 749 cubic centimeter (cc) engine. This displacement placed it at the smaller end of Harley-Davidson’s engine offerings, but it was a calculated move to create an approachable, urban-friendly, and more affordable motorcycle. The liquid-cooled Revolution X V-twin engine provided smooth, usable power, making the Street 750 a popular choice for new riders and city dwellers alike, even after its discontinuation.
