
Ariel 4F Square Four 600
Key specifications
Overview
Introducing the 1936 Ariel 4F Square Four 600, a motorcycle that stands as a testament to the innovative spirit of its time. This all-rounder was designed for enthusiasts who sought a blend of performance and reliability on the open road. With its strikingly unique square four-cylinder engine and classic lines, the 4F Square Four not only turns heads but also delivers a riding experience that captures the essence of 1930s motorcycling. As a part of Ariel's illustrious lineage, this bike embodies the brand's commitment to crafting machines that are both functional and aesthetically pleasing. At the heart of the 4F Square Four lies its remarkable 601cc square four-cylinder engine, generating a respectable 24 horsepower at 6000 RPM. This configuration not only enhances the bike's smoothness but also provides a distinctive character that is palpable when the throttle is opened. Riders can expect a top speed of 120.7 km/h (75.0 mph), making it a formidable contender for its class. The 4-speed gearbox offers seamless gear changes, allowing for a responsive and engaging ride. With a compression ratio of 6.9:1, this engine is designed for efficiency and performance, ensuring that enthusiasts can enjoy spirited rides on both winding roads and open highways. The 1936 Ariel 4F Square Four is not just about power; it also boasts features that enhance both comfort and control. Its tubular single loop frame provides a sturdy foundation, complemented by spring girder front suspension that absorbs bumps with grace. The drum brakes—both front and rear—offer dependable stopping power, embracing the classic design ethos while ensuring safety. With a fuel capacity of 13.25 liters, riders can enjoy extended journeys without frequent pit stops. Not to mention, the kick starter adds a touch of nostalgia, harking back to a time when starting a motorcycle was an art form in itself. **
Pros
- Unique Engine Configuration: The square four-cylinder design offers a smooth and distinctive power delivery that sets it apart from conventional motorcycles.
- Classic Aesthetic: Its timeless design and elegant lines appeal to vintage motorcycle enthusiasts and collectors alike.
- Comfortable Ride: The spring girder suspension and well-constructed frame provide a comfortable and stable riding experience.
Cons
- Weight Consideration: At 168 kg (370.4 pounds), the 4F Square Four can feel heavy for some riders, especially when maneuvering at low speeds.
- Limited Power Output: While 24 HP is respectable for the era, modern motorcycles may offer significantly more power and performance.
- Maintenance Complexity: The vintage technology may require more frequent maintenance and care compared to contemporary motorcycles, which can be a drawback for the less mechanically inclined.
Technical details
Source specification data
- Make
- Ariel
- Model
- 4F Square Four 600
- Category
- Allround
- Starter
- Kick
- Power
- 24.00 HP (17.5 kW)) @ 6000 RPM
- Gearbox
- 4-speed
- Top Speed
- 120.7 km/h (75.0 mph)
- Driveline
- Burman gearbox
- Engine Type
- Double twin - square 4 cylinder arrangement
- Fuel System
- Carburettor. Amal
- Bore X Stroke
- 56.0 x 61.0 mm (2.2 x 2.4 inches)
- Compression
- 6.9:1
- Displacement
- 601.00 ccm (36.67 cubic inches)
- Cooling System
- Air
- Engine Details
- Square four cylinder
- Exhaust System
- 2 x 1-into-1 pipes
- Lubrication System
- Wet sump
- Valves Per Cylinder
- 2
- Transmission Type Final Drive
- Chain
- Dry Weight
- 168.0 kg (370.4 pounds)
- Fuel Capacity
- 13.25 litres (3.50 gallons)
- Power Weight Ratio
- 0.1429 HP/kg
- Wheels
- Wire spoked
- Rear Tyre
- 3.25-19
- Frame Type
- Tubular single loop
- Front Tyre
- 3.25-19
- Rear Brakes
- Expanding brake (drum brake)
- Front Brakes
- Expanding brake (drum brake)
- Rear Suspension
- Rigid
- Front Suspension
- Spring girders