Honda CX series
Encyclopedia
The Honda CX series motorcycle
s, including the GL500 and GL650 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 carburetor
s that were tuned for reduced emissions. The electronic ignition system was separated from the rest of the electrical system, enabling the motorcycle to be push-started and ridden in case of a total electrical system failure.
with the axis of bike, sometimes called a "flying" V-twin, because the cylinders point up on either side of the motorcycle but are not symmetrical. The CX was the first V-twin motorcycle that Honda ever built. Honda built a prototype CX350 but it was never released to the public. In that version the cylinders did not have the characteristic 22 degree twist.
Initially conceived as having a full 90 degree angle between the cylinders like the similar Italian Moto Guzzi
machines, early testers reported that the prototypes were too smooth. Also, the carburetors, which projected directly rearward from the cylinders, tended to interfere with the knees of riders. Subsequent engine designs had their V-angle tightened somewhat to 80 degrees, and the heads twisted inward at the rear by 22 degrees.
An innovative design places the crankshaft above the transmission, with both in the same housing. This keeps the engine short but quite tall.
The engine design combines a 10.0:1 compression ratio and 9,650 rpm redline with overhead valves and a camshaft nestled at the base of the V between the cylinders. There are four overhead valves per cylinder, with unique forked rocker arms acting off each pushrod. The engine runs well on 87 octane
petrol. It delivers nearly 50 hp (37 kW) at 9,500 rpm with high low-speed torque characteristics. Moto Guzzi, with their contemporary V50 Monza, delivered 48 hp at 7,600 rpm. This was from an aircooled, 2-valve 90° V-twin. This Guzzi model is little known outside Europe, so a direct comparison with Honda's CX500 is possible only on paper or amongst motorcycle enthusiasts.
The cylinder bores are cast in the crankcase which complicates the overhaul process although many examples have gone 200,000 miles or more without any major engine work.
Power is transferred via an enclosed splined driveshaft
with one universal joint
. The shaft drives a bevel gear to which the wheel is joined via a cush-drive, which absorbs and dampens driveline shocks and vibrations. The bevel drive spins in an oil bath, and a zerk fitting is provided for greasing the shaft bearing. This reduces the motorcycle's maintenance costs.
While V-twin
s were nothing new, Moto Guzzi
had been mounting them "in line" with the frame with shaft drive
for many years, this Honda was decidedly different. Not only was the 500 cc engine
water-cooled, but it had four valves
per cylinder
that were operated by pushrods rather than more conventional overhead cams.
The styling was radical, upright forks and a short engine contributed to a stubby wheelbase
on a bike that was rather tall. The CX500 was one of the first recipients of Honda's new Comstar wheels (and later, on B models, reverse comstar and a square brake fluid reservoir), which measured 19 inches (482.6 mm) in front and 18 inches (457.2 mm) at the back.
The fuel tank
tapered toward the front and a huge half-moon tail light jutted out from a short fairing
behind the radically stepped seat. The end result was a mix of standard, sport, and cruiser features.
The CX500 met with a good degree of success. It proved to be reliable and economical, being the least-expensive shaft-drive bike. Many examples still exist today, and along with the GL Silverwings, are fast becoming cult bikes. There are owners clubs throughout Europe and the rest of the world.
The changes extended to the engine where Honda's early 1980s issues with cam chains were dealt with via the introduction of an automatic tensioner replacing the manual version on the earlier models. Other changes also meant that the standard valve clearances were reduced, possibly through tighter manufacturing control. Eurosport model engines are identifiable via the lack of a cam chain tensioner bolt and the revised valve covers which feature black painted stripes and satin alloy flat areas.
The changes made the 500 Eurosport significantly better to both look at and ride, and more reliable than the previous versions. The later CX650ED shared the majority of the cosmetic changes introduced by the 500EC, whilst in Japan a 400 cc version was introduced with the same styling to comply with licence rules.
The CX500T was the world's first turbo-charged production bike, as opposed to the Z1R TC which was fit with an aftermarket RayJay turbo by Turbo Cycle Corporation, before shipment to select Kawasaki dealers. The CX500T also featured fuel injection and a radical fairing. The CX500 Turbo (also known as the CX500TC) was only produced for the 1982 model year and was superseded for the 1983 model year by the CX650 Turbo which was itself based upon the naturally aspirated CX650. The CX500 Turbo was sold only in limited numbers, with a total of around 5,400 manufactured.
The Turbo's powerplant was based on the water-cooled V-twin with four pushrod-operated overhead valves per cylinder used in the shaft-drive CX500 introduced a few years earlier—itself a groundbreaking design. In fact, the engine case was retained nearly intact from the original CX500, having been designed from the outset to accommodate turbo-charging. The turbocharger, at peak boost providing approximately 19 psi of over-pressure, nearly doubles the power output of the engine when on-boost. The engine case is one of the few items carried over from the original CX500; the suspension, brakes, frame and fairing all differ significantly from the earlier CX500. The base engine also was used in the Honda GL500 Silver Wing, a touring machine aimed at being the Gold Wing's little brother, and the CX500C, a custom
model with chopper
styling.
The CX500 Turbo, although capable of superb acceleration when on-boost, suffers somewhat from an abrupt and large step in power when transitioning from off-boost to on-boost. Furthermore, being the first production Honda motorcycle with fuel-injection, the engine control system is complex and, by current standards, quite bulky, requiring two separate enclosures as well as a number of pressure-carrying hoses.
. The headlight and gauges were similar to the CX500 Deluxe. Turn signals were now mounted along the fork tubes, below the level of the headlight. This model set its sights on more of a cruiser style and image-conscious rider.1982 was the last model year for the CX500. In 1983 it was bumped up to 673 cc and became the CX650. The CX650's styling was radically different, and the engine was painted black instead of silver. The CX650 could not compete against the comparably priced, but much more powerful VF750 Magna
, and was dropped the following year.
. The 1981 model had a small tail trunk, which was replaced by a larger trunk in 1982. The trunk was interchangeable with the back seat—the bike is rider-only with the trunk installed, although there was an aftermarket extender available to allow the trunk to be mounted behind the passenger seat.
In 1983 the GL500 was upgraded to the GL650. Apart from the larger engine, the GL650 had a slightly different fairing mounts and front engine hanger mount than the GL500, and portions of the GL650 engine are painted black. The fuel economy of the GL650 was improved over that of the GL500 due to significantly taller gearing and the replacement of the CX/GL500's mechanical radiator fan with an electric fan.
The CX-based SilverWings were discontinued after the 1983 model year. Overproduction of the 1982 GL500 caused some to be sold new as late as 1984. These should still be titled as 1982 motorcycles but, in some cases, they have mistakenly been titled as later models.
plastic as opposed to the 500 turbo's GRP
. It is one of the rarest production Hondas ever, with only 1,777 built and fewer than 1,200 imported to the U.S. and Canada. The rest were distributed around the world but not sold in the Australian market.
in 1983.
and ST1300
Pan European models. These also feature longitudinal, or "flying V" engines and shaft drive, although they have four cylinders, fairings and luggage. Early influence for the CX engine design may have come from the Marusho Lilac motorcycle when engineers went to work for Honda when Marusho finally went bankrupt in 1967.
Motorcycle
A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...
s, including the GL500 and GL650 variants, were developed and released by Honda
Honda
is a Japanese public multinational corporation primarily known as a manufacturer of automobiles and motorcycles.Honda has been the world's largest motorcycle manufacturer since 1959, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than...
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 carburetor
Carburetor
A carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
s that were tuned for reduced emissions. The electronic ignition system was separated from the rest of the electrical system, enabling the motorcycle to be push-started and ridden in case of a total electrical system failure.
Engine
The CX series motorcycles feature a crankshaft configuration aligned longitudinallyLongitudinal engine
In automotive engineering, a longitudinal engine is an internal combustion engine in which the crankshaft is oriented along the long axis of the vehicle, front to back....
with the axis of bike, sometimes called a "flying" V-twin, because the cylinders point up on either side of the motorcycle but are not symmetrical. The CX was the first V-twin motorcycle that Honda ever built. Honda built a prototype CX350 but it was never released to the public. In that version the cylinders did not have the characteristic 22 degree twist.
Initially conceived as having a full 90 degree angle between the cylinders like the similar Italian Moto Guzzi
Moto Guzzi
Moto Guzzi is an Italian motorcycle manufacturer. It is one of seven brands owned by Piaggio.Established in 1921 in Mandello del Lario, Italy, the company is noted for its central historic role in Italy's motorcycling manufacture, its prominence worldwide in motorcycle racing, and a series of...
machines, early testers reported that the prototypes were too smooth. Also, the carburetors, which projected directly rearward from the cylinders, tended to interfere with the knees of riders. Subsequent engine designs had their V-angle tightened somewhat to 80 degrees, and the heads twisted inward at the rear by 22 degrees.
An innovative design places the crankshaft above the transmission, with both in the same housing. This keeps the engine short but quite tall.
The engine design combines a 10.0:1 compression ratio and 9,650 rpm redline with overhead valves and a camshaft nestled at the base of the V between the cylinders. There are four overhead valves per cylinder, with unique forked rocker arms acting off each pushrod. The engine runs well on 87 octane
Octane rating
Octane rating or octane number is a standard measure of the anti-knock properties of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating...
petrol. It delivers nearly 50 hp (37 kW) at 9,500 rpm with high low-speed torque characteristics. Moto Guzzi, with their contemporary V50 Monza, delivered 48 hp at 7,600 rpm. This was from an aircooled, 2-valve 90° V-twin. This Guzzi model is little known outside Europe, so a direct comparison with Honda's CX500 is possible only on paper or amongst motorcycle enthusiasts.
The cylinder bores are cast in the crankcase which complicates the overhaul process although many examples have gone 200,000 miles or more without any major engine work.
Transmission
The transmission spins opposite the engine crank to counteract the engine torque's tendency to tip the bike slightly to one side when the throttle is opened or closed. The gear shift lever is moved with the usual up-down motion of the left foot, but instead of rocking in a forward-backward motion as on regular bikes, it moves left-right. This difference is transparent to the rider, however, and requires no change in shifting technique. It also means that it is not possible to adjust foot peg and gear lever setup when personalizing riding position.Power is transferred via an enclosed splined driveshaft
Driveshaft
A drive shaft, driveshaft, driving shaft, propeller shaft, or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement...
with one universal joint
Universal joint
A universal joint, universal coupling, U joint, Cardan joint, Hardy-Spicer joint, or Hooke's joint is a joint or coupling in a rigid rod that allows the rod to 'bend' in any direction, and is commonly used in shafts that transmit rotary motion...
. The shaft drives a bevel gear to which the wheel is joined via a cush-drive, which absorbs and dampens driveline shocks and vibrations. The bevel drive spins in an oil bath, and a zerk fitting is provided for greasing the shaft bearing. This reduces the motorcycle's maintenance costs.
Wheels
The original Com-Star wheels combine the flexibility of spoked wheels (without the maintenance burden) with the strength and tubeless characteristics of one-piece wheels. This was one of the first production motorcycles to be equipped with tubeless tires along with the CBX six. Honda introduced the Com-Star wheels a year or so earlier on the CB250T/400T Dream as well as on the CB750F2 and GL1000 Gold Wing, although these featured standard rims that demanded inner tubes to be used.Chassis
Early versions had conventional suspension, consisting of hydraulically damped telescoping front forks and dual coil-over shocks at the rear. Later versions had air-assisted forks and featured Honda's Pro-Link monoshock rear suspension. US bikes (except GL500I, GL650I and Turbo) were equipped with a single front disk brake whereas all other bike possess dual front disk brakes. Models after 1980 sport dual piston calipers replacing the single piston caliper of the earlier models. For the Turbo and Eurosport models the rear drum was replaced with a dual piston caliper and disk. All models feature steel tube frames with a large backbone, with the engine used as a stressed member. The dual shock models use a single tube backbone whereas the later Pro-Link models employed a triple tube backbone. Later models are blessed with larger front forks and a factory installed fork brace which provides a noticeable improvement in handling.CX500
The 1978 CX500 Standard had a large fuel tank, stepped seat, a round brake fluid reservoir and a plastic mini-fairing that was thought to look unusual at the time, and gave the bike the nickname "plastic maggot". Turn signals extend out through the mini fairing from the headlight's centerline. The CX500 Standard had silver Comstar wheels, 19 inch in front and 18 inch in the rear.While V-twin
V-twin
A V-twin engine is a two-cylinder internal combustion engine where the cylinders are arranged in a V configuration.- Crankshaft configuration :Most V-twin engines have a single crankpin, which is shared by both connecting rods...
s were nothing new, Moto Guzzi
Moto Guzzi
Moto Guzzi is an Italian motorcycle manufacturer. It is one of seven brands owned by Piaggio.Established in 1921 in Mandello del Lario, Italy, the company is noted for its central historic role in Italy's motorcycling manufacture, its prominence worldwide in motorcycle racing, and a series of...
had been mounting them "in line" with the frame with shaft drive
Driveshaft
A drive shaft, driveshaft, driving shaft, propeller shaft, or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement...
for many years, this Honda was decidedly different. Not only was the 500 cc engine
Motorcycle engine
A motorcycle engine is an engine that powers a motorcycle.Motorcycle engines may be two-stroke or four-stroke, reciprocating or Wankel, single-cylinder or multicylinder , or single-rotor or twin-rotor . The engine typically drives the rear wheel, but some small bikes such as the Velosolex have a...
water-cooled, but it had four valves
Poppet valve
A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide...
per cylinder
Cylinder (engine)
A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...
that were operated by pushrods rather than more conventional overhead cams.
The styling was radical, upright forks and a short engine contributed to a stubby wheelbase
Wheelbase
In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel and the center of the rear wheel...
on a bike that was rather tall. The CX500 was one of the first recipients of Honda's new Comstar wheels (and later, on B models, reverse comstar and a square brake fluid reservoir), which measured 19 inches (482.6 mm) in front and 18 inches (457.2 mm) at the back.
The fuel tank
Fuel tank
A fuel tank is safe container for flammable fluids. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine system in which the fuel is stored and propelled or released into an engine...
tapered toward the front and a huge half-moon tail light jutted out from a short fairing
Motorcycle fairing
A motorcycle fairing is a shell placed over the frame of some motorcycles, especially racing motorcycles and sport bikes, with the primary purpose to reduce air drag. The secondary functions are the protection of the rider from airborne hazards and wind-induced hypothermia and of the engine...
behind the radically stepped seat. The end result was a mix of standard, sport, and cruiser features.
The CX500 met with a good degree of success. It proved to be reliable and economical, being the least-expensive shaft-drive bike. Many examples still exist today, and along with the GL Silverwings, are fast becoming cult bikes. There are owners clubs throughout Europe and the rest of the world.
CX500EC Eurosport
Introduced in 1982 the EC variant is a much improved motorcycle compared to the original 500. Sharing many parts with the CX500 Turbo introduced the same model year, the Eurosport features air assisted front forks with anti-dive mechanism and air assisted prolink single shock rear suspension. The wheels are also modified, with an 18 inches (457.2 mm) restyled round hole comstar front with a 100–90H18 tyre, whilst on the rear is a 120–80H18 tyre. The brakes are vastly improved with much more effective twin pot calipers on the front and a new disc brake with twin pot caliper on the rear replacing the original drum. The Eurosport is also significantly restyled with a larger fuel tank, a nose fairing, side panels, seat, and tail unit that share much more modern lines. In the UK only two colour options were made: white metallic with blue and red striping, or black with orange and silver stripes. The instrumentation is improved with the introduction of a fuel gauge and like the rest of the bike a much updated appearance. Plastic mudguards replace the chromed steel versions on the earlier machines curing the associated rust problems. The round headlight of the early bikes is also replaced with a rectangular lens which gives improved night lighting.The changes extended to the engine where Honda's early 1980s issues with cam chains were dealt with via the introduction of an automatic tensioner replacing the manual version on the earlier models. Other changes also meant that the standard valve clearances were reduced, possibly through tighter manufacturing control. Eurosport model engines are identifiable via the lack of a cam chain tensioner bolt and the revised valve covers which feature black painted stripes and satin alloy flat areas.
The changes made the 500 Eurosport significantly better to both look at and ride, and more reliable than the previous versions. The later CX650ED shared the majority of the cosmetic changes introduced by the 500EC, whilst in Japan a 400 cc version was introduced with the same styling to comply with licence rules.
CX500 Turbo
In 1982, this version of the bike received a turbocharger and a very complex fuel injection system with multiple redundant fail-safe systems. The following year, all CX500s and GL500s were enlarged to 650 (actually 673 cc), and the turbo version got a much simplified fuel injection system. Factory turbos fell out of favor with the motorcycling public for various reasons, causing Honda to cease production of the CX650 Turbo after the 1983 model year.The CX500T was the world's first turbo-charged production bike, as opposed to the Z1R TC which was fit with an aftermarket RayJay turbo by Turbo Cycle Corporation, before shipment to select Kawasaki dealers. The CX500T also featured fuel injection and a radical fairing. The CX500 Turbo (also known as the CX500TC) was only produced for the 1982 model year and was superseded for the 1983 model year by the CX650 Turbo which was itself based upon the naturally aspirated CX650. The CX500 Turbo was sold only in limited numbers, with a total of around 5,400 manufactured.
The Turbo's powerplant was based on the water-cooled V-twin with four pushrod-operated overhead valves per cylinder used in the shaft-drive CX500 introduced a few years earlier—itself a groundbreaking design. In fact, the engine case was retained nearly intact from the original CX500, having been designed from the outset to accommodate turbo-charging. The turbocharger, at peak boost providing approximately 19 psi of over-pressure, nearly doubles the power output of the engine when on-boost. The engine case is one of the few items carried over from the original CX500; the suspension, brakes, frame and fairing all differ significantly from the earlier CX500. The base engine also was used in the Honda GL500 Silver Wing, a touring machine aimed at being the Gold Wing's little brother, and the CX500C, a custom
Custom motorcycle
A custom motorcycle is a motorcycle that is highly stylized or which treats aspects such as frame geometry, engine design, or paintwork in an unusual way compared to standard manufacturing. Custom motorcycles are unique or individually produced in a very limited quantity, as opposed to "stock"...
model with chopper
Chopper (motorcycle)
A chopper is a type of motorcycle that was either modified from an original motorcycle design or built from scratch to have a hand-crafted appearance. The main features of a chopper that make it stand out are its longer frame design accompanied by a stretch front end...
styling.
The CX500 Turbo, although capable of superb acceleration when on-boost, suffers somewhat from an abrupt and large step in power when transitioning from off-boost to on-boost. Furthermore, being the first production Honda motorcycle with fuel-injection, the engine control system is complex and, by current standards, quite bulky, requiring two separate enclosures as well as a number of pressure-carrying hoses.
CX500 Custom
The "Custom" variant, introduced in 1979, had a smaller, narrower tank and buckhorn handlebars that made the bike more Harley-esqueHarley-Davidson
Harley-Davidson , often abbreviated H-D or Harley, is an American motorcycle manufacturer. Founded in Milwaukee, Wisconsin, during the first decade of the 20th century, it was one of two major American motorcycle manufacturers to survive the Great Depression...
. The headlight and gauges were similar to the CX500 Deluxe. Turn signals were now mounted along the fork tubes, below the level of the headlight. This model set its sights on more of a cruiser style and image-conscious rider.1982 was the last model year for the CX500. In 1983 it was bumped up to 673 cc and became the CX650. The CX650's styling was radically different, and the engine was painted black instead of silver. The CX650 could not compete against the comparably priced, but much more powerful VF750 Magna
Honda Magna
The first generation 1982 V45 Magna had chrome headlight and fenders. The front disc brakes have straight grooves, dual piston calipers, and TRAC anti-dive. The speedometer reads 80 mph. The redline is 10,000 rpm. The engine is a 748 cc DOHC 16-valve liquid-cooled 90 degree V-4...
, and was dropped the following year.
CX500 Deluxe
The "Deluxe" model appeared in 1979. This bike looked nearly identical to the original CX500 Standard, with the exception of regular (85 mph) gauges and headlight (the mini fairing was removed) and black reversed Com Star wheels - 19 inch front and 16 inch rear. 1981 was the final year for the CX500 Deluxe model.GL500 and GL650 Silverwing
In 1981 Honda released the GL500 Silverwing, which was a mid-sized touring bike based on the CX500 engine. The GL500 engine was similar to the CX500 engine, but used the more reliable transistorized ignition system, so that the stator could contain only charging windings, and thus put out more power for operating lights and electronic devices commonly added to touring machines. The GL500 also used Honda's Pro-Link monoshock rear suspension, and was available both as a naked bike and as an Interstate model. The Interstate included a large factory fairing, hard saddlebags, and a trunk. This made the Silverwing look like a miniature GL1100 GoldwingHonda Goldwing
The Honda Gold Wing is a touring motorcycle designed and manufactured by Honda. It was introduced October 1974, and went on to become a popular model in North America, Western Europe and Australia. Over the course of its history, it has had numerous modifications to its design. In 1975 it featured...
. The 1981 model had a small tail trunk, which was replaced by a larger trunk in 1982. The trunk was interchangeable with the back seat—the bike is rider-only with the trunk installed, although there was an aftermarket extender available to allow the trunk to be mounted behind the passenger seat.
In 1983 the GL500 was upgraded to the GL650. Apart from the larger engine, the GL650 had a slightly different fairing mounts and front engine hanger mount than the GL500, and portions of the GL650 engine are painted black. The fuel economy of the GL650 was improved over that of the GL500 due to significantly taller gearing and the replacement of the CX/GL500's mechanical radiator fan with an electric fan.
The CX-based SilverWings were discontinued after the 1983 model year. Overproduction of the 1982 GL500 caused some to be sold new as late as 1984. These should still be titled as 1982 motorcycles but, in some cases, they have mistakenly been titled as later models.
CX650C
The CX650 Custom was a one year model produced in 1983 for the US market. Its unique cruiser type styling sets it apart from all other CX variants. The frame is completely different, and the styling was marketed to accommodate the American desire for the low stretched look of American cruiser bikes. Its semi chopped fork, tear drop tank, low seat and truncated exhaust gave it a very rakish look. However, it was very similar in styling and price range to the 750 Shadow and Honda elected to have only one cruiser bike in that class, thus the reason for its short model life.CX650ED
The CX650ED or Eurosport was also introduced in 1983 and was cosmetically very similar to the CX500 Eurosport produced the previous year. It was aimed at the UK, European, Canadian, and Australian markets and is really a superb motorcycle. The brakes, suspension and handling were advanced in comparison to CX500 variants. Except for the Turbo, the model shares many common features with its CX500 siblings TRAC anti-dive forks, Pro-Link rear suspension, twin-pot brakes and disc front and back. Though this model was not sold in the US, some have been imported by private owners.CX650T
In 1983, the engine of the CX500 Turbo was bumped up to 673 cc which meant an increase from 77 to 97 horsepower, making it one of the more powerful motorcycles available that year. In addition to the increase in displacement, the compression ratio was increased while the maximum boost pressure was lowered, making for a less abrupt transition from off-boost to on-boost than was present in the earlier CX500 Turbo. The fuel-injection control system was substantially revised for the CX650 Turbo, and the rear shock received an update as well by adding a manually operated damping control mechanism. Cosmetically, the CX650 Turbo differs from its predecessor primarily in color and badging. However, in a cost cutting exercise, Honda manufactured the 650 Turbo fairing from ABSAcrylonitrile butadiene styrene
Acrylonitrile butadiene styrene is a common thermoplastic. Its melting point is approximately 105 °C ....
plastic as opposed to the 500 turbo's GRP
Glass-reinforced plastic
Fiberglass , is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. It is also known as GFK ....
. It is one of the rarest production Hondas ever, with only 1,777 built and fewer than 1,200 imported to the U.S. and Canada. The rest were distributed around the world but not sold in the Australian market.
Other variants
The Japanese and European market saw 400 cc versions of the CX and GL, aptly named the CX400 and GL400. In Japan the GL650 SilverWing Interstate was released as the Limited Edition GL700 Wing Interstate, although it used the same 674 cc engine that was used in the GL650. Also in Australia, the 1980-1982 CX500 'standard' models were known as the "CX500 Shadow". This made for much confusion when Honda released the VT500 and VT750 "Shadow"Honda Shadow
The Honda Shadow refers to a family of cruiser-type motorcycles made by Honda since 1983. The Shadow line features motorcycles with a liquid-cooled 52-degree V-twin ranging from 125cc to 1800cc engine displacement...
in 1983.
Influence of CX design
The CX series motorcycle has had an influence on the design of Honda's successful ST1100Honda ST1100
The Honda ST1100, also known as the Pan-European, is a sport touring motorcycle that was manufactured by Honda until 2002.- History :The ST1100 began its production in 1990 and ended in 2002, although the police variant, the ST1100P, was available for several more years.A revamped model, the...
and ST1300
Honda ST1300
The Honda ST1300, also known as the Pan-European, is a sport touring motorcycle manufactured by Honda and introduced to Europe in 2002. The following year, it was released in North America as the ST1300....
Pan European models. These also feature longitudinal, or "flying V" engines and shaft drive, although they have four cylinders, fairings and luggage. Early influence for the CX engine design may have come from the Marusho Lilac motorcycle when engineers went to work for Honda when Marusho finally went bankrupt in 1967.