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Harley-Davidson Model J
1915Allround

Harley-Davidson Model J

Key specifications

Engine
989 cc
Power
17 HP
Weight
136 kg
Fuel type
petrol
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1915 Harley-Davidson Model J, a revered classic that embodies the spirit of early American motorcycling. Positioned as an allround motorcycle, the Model J was designed to cater to a wide audience, from weekend enthusiasts to everyday riders. With its rich heritage and distinctive styling, this motorcycle has become a symbol of freedom on two wheels. Its robust build and timeless design have not only secured its place in history but also established it as a sought-after collector's item, reflecting the pioneering spirit of Harley-Davidson. At the heart of the Model J lies a powerful V2, four-stroke engine with a displacement of 989 cc (60.35 cubic inches). This engine delivers a respectable 17 horsepower at 3200 RPM, allowing riders to experience a top speed of 136.8 km/h (85 mph). The engine's bore and stroke of 84.1 x 88.9 mm (3.3 x 3.5 inches) contribute to its smooth power delivery, while the carburettor fuel system ensures an efficient blend of air and fuel for optimal performance. When you twist the throttle, the Model J responds eagerly, making it a joy to ride on both open roads and city streets. Coupled with a chain final drive, the Model J offers a reliable connection between the engine and rear wheel, enhancing the overall riding experience. The 1915 Harley-Davidson Model J is adorned with features that underscore its engineering excellence. The motorcycle is equipped with an expanding drum brake at the rear, providing dependable stopping power for its time. Its weight of 136 kg (299.8 pounds) ensures a solid and stable ride, with a power-to-weight ratio of 0.1250 HP/kg that makes it nimble yet robust. Additionally, the H.D generator ignition system reflects the innovative spirit of the era, ensuring reliable starts and consistent performance. The iconic design, complete with classic fenders and a distinctive Harley-Davidson logo, captures the essence of early 20th-century motorcycling and continues to turn heads even today. **

Pros

  • Iconic Design: The Model J’s classic styling and historical significance make it a standout in any collection.
  • Smooth Performance: The engine delivers a satisfying power band, making it enjoyable for both cruising and spirited rides.
  • Robust Build Quality: Built with durable materials, the Model J can withstand the rigors of both time and use, making it a reliable vintage choice.

Cons

  • Limited Power: With only 17 HP, the Model J may feel underpowered compared to modern motorcycles, especially on highways.
  • Basic Technology: The motorcycle lacks modern conveniences such as electric start and advanced braking systems, which can be a drawback for some riders.
  • Weight Considerations: At 136 kg, it may feel heavy for new riders or those not accustomed to vintage bikes, impacting maneuverability in tight spaces.

Technical details

Source specification data

Make
Harley-Davidson
Model
Model J
Category
Allround
Power
17.00 HP (12.4 kW)) @ 3200 RPM
Ignition
H.D generator
Top Speed
136.8 km/h (85.0 mph)
Fuel System
Carburettor
Bore X Stroke
84.1 x 88.9 mm (3.3 x 3.5 inches)
Displacement
989.00 ccm (60.35 cubic inches)
Engine Details
V2, four-stroke
Transmission Type Final Drive
Chain
Dry Weight
136.0 kg (299.8 pounds)
Power Weight Ratio
0.1250 HP/kg
Seat
Single
Wheels
Spoked
Rear Tyre
3-28
Front Tyre
3-28
Rear Brakes
Expanding brake (drum brake)