A straight-twin engine, also known as straight-two, inline-twin, vertical-twin, or parallel-twin is a two-cylinder piston engine which has its cylinders arranged side by side and its pistons connected to a common crankshaft. Compared to V-twins and flat-twins, straight-twins are more compact, simpler, and usually cheaper to make, but may generate more vibration during operation.
The CB Series is an extensive line of Honda motorcycles. Most CB models are road-going motorcycles for commuting and cruising. The smaller CB models are also popular for vintage motorcycle racing. All CB series motorcycles have inline engines. Note: The Honda CBR series are sport bikes.
The Honda CB750 is an air-cooled, transverse, in-line four-cylinder engine motorcycle made by Honda over several generations for year models 1969–2003 as well as 2007 with an upright or standard riding posture. It is often called the original Universal Japanese Motorcycle (UJM).
The Honda CX series motorcycles, including the GL500 and GL650 Silver Wing variants, were developed and released by Honda in the late 1970s, with production ending in most markets by the mid 1980s. The design included innovative features and technologies that were uncommon or unused at the time such as liquid cooling, electric-only starting, low-maintenance shaft drive, modular wheels, and dual CV-type carburetors that were tuned for reduced emissions. The electronic ignition system was separate from the rest of the electrical system, but the motorcycle could only be started via the start button.
The designation CB400 has applied to ten Honda motorcycle families:
The Honda F-Series engine was considered Honda's "big block" SOHC inline four, though lower production DOHC versions of the F-series were built. It features a solid iron or aluminum open deck cast iron sleeved block and aluminum/magnesium cylinder head.
A motorcycle engine is an engine that powers a motorcycle. Motorcycle engines are typically two-stroke or four-stroke internal combustion engines, but other engine types, such as Wankels and electric motors, have been used.
The Honda CB450 is a standard motorcycle made by Honda from 1965 to 1974 with a 444 cc (27.1 cu in) 180° straight-twin, dohc engine. Producing 45 bhp, it was Honda's first "big" motorcycle.
The Honda CM400 is a street bike produced by the Honda Motor Company from 1979 to 1982, part of a series of motorcycles with the prefix 'CM' using various engine capacities. It was a precursor to the Honda Rebel series of motorcycles. The bike had a 395 cc (24.1 cu in) air-cooled parallel twin-cylinder engine. It was equipped with electric start and electronic ignition. Models included the CM400A (Automatic), CM400C (Custom), CM400E (Economy) and CM400T (Touring). The CM400C was produced only in 1981 making it one of the more rare model types.
The sister bike to the Honda CB450, the Honda CL450 was the dual sport or "scrambler" model of Honda's 444 cc (27.1 cu in) DOHC parallel-twin engined motorcycle. The differences between the models were mostly cosmetic; the CL450 having off-road-style high-level exhaust pipes and braced handlebars, for instance.
The Honda Nighthawk 250 is a Honda standard motorcycle. It has a 234 cc (14.3 cu in) air-cooled parallel-twin engine. While the first Nighthawk (CB650) was manufactured in 1982, the first 250 Nighthawk was manufactured in 1991. It utilized the 1985–87 CMX250 Rebel engine with all new wiring and components and reshaped the Rebel cylinder head slightly as well as incorporating a larger carburetor and new valve cover. The motorcycle changed little over the years except for color. The Nighthawk 250 is essentially a light, maneuverable, inexpensive, economical, and easy to maintain bike. It is often used in Motorcycle Safety Foundation (MSF) motorcycle training. Its small size and low seat make it a popular model for riders of smaller stature. It has drum brakes and spoked wheels at front and rear, though later models in the Australian, U.K. and Japanese markets upgraded to front disc brakes and alloy wheels.
The Honda CB77, or Super Hawk, is a 305 cc (18.6 cu in) straight-twin motorcycle produced from 1961 until 1967. It is remembered today as Honda's first sport bike. It is a landmark model in Honda's advances in Western motorcycle markets of the 1960s, noted for its speed and power as well as its reliability, and is regarded as one of the bikes that set the standard for modern motorcycles.
The Honda CB900C is a cruiser motorcycle produced by Honda from 1980 to 1982 primarily for the American market. It was succeeded by the CB1000C in 1983.
The Honda CM450A is a motorcycle made by Honda in 1982 and 1983. It was based on the CB400 and CM400 models (1978–1981), especially the CM400A Hondamatic (1980–1981). It had a 447 cc (27.3 cu in) SOHC parallel twin engine with two carburetors and a two-speed transmission with a torque converter. It was not a full automatic, however, because the rider had to manually shift between low and high. It is called automatic because there is no clutch required due to the torque converter, and shared the Hondamatic trade name with Honda cars that had true automatic transmissions. The chain-driven CM450A had a top speed of 90 miles per hour (140 km/h) and weighed 413 pounds (187 kg). Both models had a front disc brake and a rear drum brake. The suspension consisted of two shock absorbers at the rear and telescoping shock-absorbing front forks. The fuel tank had a 3.4 US gallons capacity. The exhaust was routed through a separate pipe and baffle on each side of the motorcycle, although both exhaust pipes shared a plenum under the motor. It had an electric start with a kick start as well.
The Honda CB250F also known as the Honda Hornet 250 is a standard motorcycle which was launched by Honda in 1996. It was initially only available in Japan, as a domestic model but was made available to the rest of the world as a grey import. Powered by a de-tuned version of the inline-4 engine from the CBR250, it produces around 40 PS at 14,000 rpm to its redline of 16,000 rpm. This tuning allows the engine to provide more useful low-end power. The bike features a 6-speed transmission and a 16-litre fuel tank and in later models, a dual-tone coloured exterior. This bike is said to emit a peculiar high-pitched whine due to the gear driven camshafts used inside the engine.
The Honda CB900F is a Honda motorcycle made in two iterations which appeared some twenty years apart. Both generations of the CB900F are straight four-cylinder four-stroke 900 cc (55 cu in) roadsters.
The Honda CB250N and CB400N Super Dream are motorcycles manufactured by the Honda Motor Company from 1978 to 1986. The successor to the short lived Dream model, it had a series of revisions including a six-speed transmission and what Honda termed as European styling which resembled the CB750F and CB900F. It was a popular model for Honda with 70,000 bikes sold in the UK alone.
The Honda CB400 (twin) is a series of Honda motorcycles produced from 1977-1986. They were introduced as the successor to the popular CB350, CB360 and the four-cylinder CB400F. In Europe they were known as the CB400T Dream and CB400N Super Dream. In the America's they were known as CB400T Hawk and were marketed alongside the more cruiser inspired CM400 models. The CB400 range was succeeded by a range of models bored out to 447cc; the CB450SC in the America's and the CB450S and CB450DX in Europe. Despite their similar nomenclature, the CB400 twin series is not derived from the earlier CB450 (1965-1974).
The N100 Plan was the corporate code name for the top secret concept, engineering, and development of an entirely new motorcycle engine by Kawasaki Motorcycle Corporation, a division of Kawasaki Heavy Industries in 1966.
The Honda CB400T is a range of motorcycles built by Honda. In the United Kingdom it was known as the Dream, whereas in the United States it was known as the Hawk. A Honda CB250T version was also available for UK licensing reasons.
