The 1917 Harley-Davidson Model J was a significant motorcycle in the company's early history, playing a vital role in both civilian and military use during World War I. Known for its rugged reliability, powerful V-twin engine, and improved design, the Model J was one of Harley-Davidson’s most advanced motorcycles of the 1910s.
Overview
- Manufacturer: Harley-Davidson
- Model: J
- Production Year: 1917
- Class: Standard / Touring
- Notable Use: Civilian and military (WWI)
Engine & Performance
- Engine Type: 989cc (60.3 ci) F-Head V-Twin
- Valvetrain: F-head (intake-over-exhaust)
- Horsepower: 16 hp
- Compression Ratio: 4.0:1
- Top Speed: 60–65 mph (96–105 km/h)
- Fuel System: Schebler carburetor
- Fuel Capacity: 4.5 gallons
Transmission & Drivetrain
- Gearbox: 3-speed hand-shifted transmission
- Clutch: Hand-operated
- Primary Drive: Chain
- Final Drive: Belt or chain (customer option)
Chassis & Suspension
- Frame: Steel tubular frame
- Front Suspension: Trailing-link springer fork
- Rear Suspension: Rigid (no rear shocks)
- Brakes: Drum brakes (rear only)
- Wheels: 28-inch clincher tires
- Weight: 325–350 lbs (147–159 kg)
Design & Features
- Iconic Olive Drab Green Paint (first introduced in 1917, influenced by military use).
- Large teardrop fuel tank with Harley-Davidson script logo.
- Acetylene gas-powered headlamp (electric lighting available as an upgrade).
- Optional military adaptations, such as rifle scabbards, ammunition boxes, and sidecars.
- Step-starter system, making it easier to start than earlier models.
World War I Impact
- Harley-Davidson provided over 15,000 Model J motorcycles to the U.S. Army for use in World War I.
- Used for dispatch riders, reconnaissance, and transport on the battlefield.
- Helped solidify Harley-Davidson as a trusted military supplier, boosting its reputation.
Growth of Harley-Davidson
- By 1917, Harley-Davidson was the world’s largest motorcycle manufacturer, producing over 17,000 motorcycles annually.
- The Model J was a best-seller, appealing to both civilian riders and law enforcement.
- First Harley with factory Olive Drab paint, later becoming the standard for military bikes.
Legacy & Collectibility
- Considered one of the most important Harley-Davidsons of the early 20th century.
- Restored examples can fetch $50,000+ at auctions, with military versions being even more valuable.
- A symbol of Harley’s wartime service and early dominance in the motorcycle industry.
Conclusion
The 1917 Harley-Davidson Model J was a landmark motorcycle, defining Harley's early engineering advancements and military involvement. With its powerful V-twin engine, rugged frame, and war-proven reliability, it remains a highly collectible and historically significant piece of motorcycling history.
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