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Motorcycle engines range from less than 50 cc (cubic centimetres), commonly found in many small scooters, to 5735 cc, a Chevrolet V8 engine, currently used by Boss Hoss in its cruiser style motorcycle. Motorcycles have mostly, but not exclusively, been produced with one to four cylinders, and designers have tried virtually every imaginable layout.
The rear wheel is guided by a cantilever rear swingarm, whose bearings and spring/damper unit are concealed to give the impression of a rigid frame without rear suspension. Otherwise, modern technology such as an partially integral anti-lock braking system (cornering ABS), assistance systems, fuel injection and upside-down telescopic fork is ...
Detail shot of 1918 Indian Powerplus, showing engine, with removable caps for valve removal, hand control levers for clutch, gearbox, and exhaust valve lifter, and pedal for rear drum brake The Powerplus had twist grips on both handles; the throttle was controlled by the left twist grip while the right twist grip advanced or retarded the spark.
The 107 cu in (1,750 cc) model with a claimed 108–112 lb⋅ft (146–152 N⋅m) is standard on all models, with the 114 cu in (1,870 cc) version making a claimed 119 lb⋅ft (161 N⋅m) remaining as an option on some softails and all touring and trike models, and the 117 cu in (1,920 cc) is standard on CVO models with a claimed 124 lb⋅ft ...
Load-bearing unit construction engine & gearbox, with front & rear subframes: Suspension: Front: Telelever Rear: Paralever: Brakes: Integral ABS (part-integral) Front: 4-piston calipers with floating 320 mm discs Rear: 2-piston floating caliper with single 265 mm disc: Tires: Front: 120/70ZR17 on 3.50 x 17 rim Rear: 180/55ZR17 on 5.50 x 17 rim
For a sample motorcycle moving at 22 m/s (50 mph) that has a front wheel with a moment of inertia of 0.6 kg·m 2, turning the front wheel one degree in half a second generates a roll moment of 3.5 N·m. In comparison, the lateral force on the front tire as it tracks out from under the motorcycle reaches a maximum of 50 N.
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Motorcycle rider death rates increased among all rider age groups between 1998 and 2000; Motorcycle rider deaths were nearly 30 times more than drivers of other vehicles; Motorcycle riders aged below 40 are 36 times more likely to be killed than other vehicle operators of the same age.