Sport · 1918
4HP
Technical Overview
1918 Blackburne 4HP Technical Analysis & Specification Breakdown
At the heart of the 1918 Blackburne 4HP sport motorcycle, Blackburne relies on a 499 cc (30.5 cu in) single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 85.0 x 88.0 mm (3.3 x 3.5 inches).
Within MotoLibrary's Blackburne archive, this model family spans 5 indexed model years from 1915 to 1919, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Engine
Displacement 499.0 ccm (30.45 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Single cylinder, two-stroke
Bore x Stroke 85.0 x 88.0 mm (3.3 x 3.5 inches)
Fuel System Carburettor
Wheels & Brakes
Front Tyre 3-28
Rear Tyre 3-28
Wheels Spoked
Estimate
Ownership Cost Calculator
⛽ Fuel
per year
🔧 Maintenance
per year
🛡️ Insurance
per year
TOTAL
* Estimates only. Actual costs vary by country, riding habits, insurance provider and maintenance schedule.