Engines
Bore Stroke Ratio Explained, What It Really Predicts
Why bore and stroke set an engine's rev ceiling rather than its torque, with the displacement arithmetic and six current manufacturer figures...
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Torque vs Horsepower for Riders, What Each One Answers
Power is torque times angular velocity. What that means for gearing, acceleration and roll-on, plus how to read published figures without comparing...
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Single-Cylinder Motorcycle Engines Explained
Balance, flywheel effect, engine braking and service cost on one-cylinder engines, with current Suzuki dual sport specifications showing two opposite design briefs.
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V-Twin vs Inline Four, Where the Character Comes From
Firing intervals, balance, engine width, heat and valve count compared, with current manufacturer bore and stroke figures that contradict the usual folklore.
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Motorcycle Engine Layouts Explained, What Each One Costs You
Singles, twins, triples and fours compared by firing interval, balance, engine width and service cost, with real bore and stroke figures from...
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