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This is a collection of some 55 selected articles written by Phil Irving for the London magazine Motorcycling between 1932 and 1944.

Articles cover all aspects of classic motorcycling from engines to frames and suspension. Articles.

Articles include:

• How Port Shapes Affect Performance
• The Art of Cutting Down Weight
• The Technical Advantages of Water Cooling
• Problems of Sidecar Steering
• Brakes-Some Facts about "Stoppers"
• Fashions in Forks
• Sidelights on Chainwear
• Give your Con-rod a Thought
• How Expansion and Stresses Alter Cubic Capacity
• Big and Little Ends
• Some Interesting Facts about Flywheels
• How Engines are Lubricated
• Interesting Facts about Compression Ratios and Temperatures
• Why Dry-Sump Oiling Systems require Frequent Draining
• What an Oil Analysis Shows
• Vibration Periods Explained
• The Problems of Valve-Guide Wear
• Facts about Ball and Roller Bearings
• The Place where the Horses Work
• Cam Design and Engine Performance
• Information about Piston Rings
• Force Fits
• Are you a Sidecar Expert?
• The Whys and Wherefores of Special Steels
• Pros and Cons of Con-rods
• Facts about Distortion
• Lubrication of Plain Bearings
• Case-Hardening
• Aluminium Alloys
• Oil Pumps and their Peculiarities
• A Defence of Chain Drive
• Cam Design
• Big-end Bearings
• On Cams and Valve Timing
• Rear Springing Systems
• Ignition Timing
• Shock Absorbers and Steering Dampers
• Flywheel Alignment
• Facts about F1ywheels
• The Solution is not so Obvious!
• A Dispassionate Review of Sleeve Valve Possibilities
• "Slide Rule" Discusses Springs
• Is Appearance so Important?
• The Value of Nickel
• Points on Primary Drives
• Wire Wheels
• Single and Parallel Twin Balance Compared
• Engine Mountings
• Multi-cylinder Balance
• Fuel Economy
• The Design of Cooling Fins
• Measuring Capacity and Compression Ratio
• Towards Easier Maintenance
• Dust Exclusion
• Mechanical or Manual Control?

Code No. 011512, ISBN 0908031823