CB400 Information Portal

[Kushinagar]

CB400 Community

 

Information Portal

 

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History

With the popularity and successful introduction of the CB-1 in March 1989, Honda begin the development of the next generation of motorcycle, the “CB400 SUPER FOUR”. The design philosophy focus on the beautiful styling, technology and yet not restricting to efficiency and functionality.

 

 

 

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At the time of the styling (PROJECT BIG-1) it is basic policy, - Loading the water cooling 4 cycles DOHC serial 4 cylinder engines in the heart. - The body body to the last sexy & It is wild. - Possess the impressed efficiency which fascinates the heart of the person whom it runs.

 

Faithfully it materialized converted three elements. 　As the technique ““it ran” the styling” and with it paid attention to being close relationship. Namely, in order “to run and” for there to be a character, for there to be the “styling”, for there to be that “styling” and “to run and” for there to be a character, that you thought whether “you just looked at the styling with design of the motorcycle, those where image of the running is visible” is not. 　That displaying at numerical value of the specifications and the like is not possible, it appeals to the sensitivity of the rider, you defined whether the “open impression” and the “refreshing impression”, those which express “the joy of owning” are not “impressed efficiency”. 　And, as for the design work which it materializes converts those you said that design of 10 years ago is followed, pursuit of the styling which is supported in up-to-date technology not to be restricted to mere starting point revolution, is indispensable, you thought that the design which can be satisfied also the utility and the using selfishness furthermore, not to be restricted to just the beautiful styling, is necessary. Standing on this kind of basic policy, (Sexy & it is visible grandly; The wild forum) (strong forum where energy was concealed inside) It designated 2 points as design concept, made the coming out spot of development.

Concerning body size, it designated the wheel base as 1,455mm, it made with respect to of one class does grandly. 　And, it assures the cooperation with the other functional part to the frame which becomes the framework, the motorcycle it has without insisting the existence above necessity, as “natural beauty” is expressed, the calm flight quality which does not give stress to the rider it has made the setting which is answered on the basis of, even in the exciting running. 　In addition, the [daburukuredoru] type by the round section metal tubing of large diameter is adopted, the serial 4 cylinder engine peculiar secondary vibrating components are made to decrease by the fact that the front engine hanger is made offset type, [teisuto] of the running which feeling is good is brought to the rider. 　And, design of the fuel tank which becomes essence of beauty of [neikitsudo] [rodosupotsu] represents “the tough muscle which pulled out power,” has made the sufficient power which is concealed inside without overpowering around, and can appeal the existence impression. Simultaneously as for that, you think that it is [katachi] which conceals the sufficient magnanimity which can give the serenity to the person with the kind face the time. This tank form is one important item which symbolizes “CB400 SUPER FOUR”. In addition, tank capacity makes 18L, corresponds to long touring sufficiently.

Furthermore, you thought that furthermore gives momentum to tank form of the strong design, the item which is the rear cowl. And, the rear cowl “of CB400 SUPER FOUR” in order to express the stirring impression, to rise made the forum of the tend. As for that, travelling at whichever kind of speed, it is the stirring impression of being able feel, it is the after effect which is suitable in forcibleness of the tank and is completed. 　In addition it is to make the image of [neikitsudo] [rodosupotsu] which makes the tail lamp of the round 2 light types which are identity of the serial 4 cylinders of HONDA of recent years to the tail lamp fuse, inside the rear cowl, is completely new.

The side cover made plain surface constitution in comparison with the tank and the rear cowl. Form of this side cover, although making the volume of the section emphasize, to be the existence which tightens the entire body in the strain, to unify the other item and the insistence of the parts, as a whole machine sexy & The wild forum the big role which impresses is carried out. 　Around the meter, chrome plating processing is administered to the meter housing section, material feeling is raised. In addition, as you adopt the aluminum plate of [hearain] processing to the base of the indicator lamp, you make the finish which emphasizes motorcycle original beauty, it made the side one line which is easy to verify also the arrangement of the indicator lamp, assured the improvement of visibility.

　In the power unit which succeeds the tradition of CB, with, it made kind of modelling where as it modifies substantially in the base, functional beauty can feel the water cooling serial 4 cylinders which are matured “CB-1” even in the engine itself pursued impressed efficiency even in mechanical sound of the engine. 　The head cover, clutch cover of the buff finish of high material feeling and spin buff installing the generator cover which was processed in basic component such as the cylinder and the crankcase where black metallic paint of delustering is administered. Coupled with all stainless steel make exhaust pipe and the like which has unique gloss, it is one of the joy of owning the motorcycle, “seeing,” “polishing,” and so on, it makes the communication of the machine and the person be completely satisfied, it conceals and it has become the finish which possesses barrel impressed efficiency. 　The impressed efficiency which is required to the engine concretely, low-speed smooth & You thought high-speed powerful engine output characteristics and the engine sound which makes room feel. Because of that, inhalation system, concerning the inertial mass of valve timing and crank type when the engine response which the rider intends by modifying, is made to show simultaneously, it was compatible also the output characteristics which in torque full are superior in the throttle linearity, low-speed smooth, it could obtain the natural output characteristics, high-speed powerful. 　Concerning inhalation system, 33mm it became possible port angle by from the former 33° making the 5° modify, furthermore from φ29mm modified port diameter in φ26mm, raised inhalation flux substantially, went hand in hand with the NEW slant CV carburetor of the flat valve and the adoption of capacity 5.5L improved inhalation efficiency furthermore to make shorten the superintendent priest.

Furthermore, the NEW slant CV carburetor from the former round vacuum piston modifies to the T type vacuum piston, assures the decrease of inhalation resistance, supplies the mixture without stress low from revolution to the high rotary limits, actualizes the improvement of output characteristics in the nimble throttle response and the middle low-speed limits.

In addition, with modification of inhalation system, valve timing in order to assure the optimization of output characteristics, made the output characteristics which have the extension impression, by expanding overlap and spread angle, actualized smooth response characteristic by making the valve lift quantity decrease. 　Furthermore as in order to assure the optimization of the engine response, inertial mass of crank type approximately 70% is raised with total, the toughness in the rotary limits is made to show low, coupled with the modification of inhalation system, torque full in the high rotary limits it was compatible also response characteristic. 　Furthermore, smooth & In order to pull out the output characteristics of the powerful engine to the maximum, mission ratio was taken a second look extensively, wide 6 fast missions were adopted.

Concerning cam drive system, because mechanical sound of the engine which makes room feel is made to actualize, you adopted silent cam chain system, you adopted combining [otokamuchientenshiyona] which always maintains optimum Hari condition. 　As this [kamuchientenshiyona] adopts under pivot system and holds down behavior of the chain to smallest, it actualized the drive of the camshaft whose precision is high by equipping the mechanical type adjuster of maintenance free type, went hand in hand with the no rush mechanism for gear sound decrease of the primary gear and the optimization of clutch damper quality improved calmness characteristic furthermore.

[Kushinagar]

CB400 Super Four Production Model

 

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CB400 Super Four - Project Big-1

 

 

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CB400 Super Four - Version R

 

 

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CB400 Super Four - Version S

 

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CB400 Super Four - Version S 50th Anniversary Special Model

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CB400 Super Four - Hyper Vtec (Spec I)

 

 

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CB400 Super Four - Hyper Vtec II (Spec 2)

 

 

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CB400 Super Four - Hyper Vtec III (Spec 3)

 

 

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CB400 Super Four - Hyper Vtec III Bol D'or (Spec III Bol D'or)

 

 

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CB400 Super Four - Hyper Vtec Revo (Non-ABS)

 

 

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CB400 Super Four - Hyper Vtec Revo (ABS)

 

 

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CB400 Super Four - Hyper Vtec Revo Bol D'or (ABS)

[Kushinagar]

Version S

 

After that, as for “CB400 SUPER FOUR”, ' To aim toward the actualization of the “entire area impressed efficiency” in March of 94, administering the improvement of output characteristics and the improvement of material feeling of the body section, minor model change. 　Furthermore, ' As “super impressed efficiency” it improves the output characteristics in the middle & high rotary limits to theme, equipment specification was designated as more sporty ones in March of 95, “CB400 SUPER FOUR version R” type addition. 　And ' The light running of high material feeling and version R where, the standard model has in February of 96 was made to fuse “CB400 SUPER FOUR version S” to type add, successive CB400 SUPER FOUR any age was supported in the user, continued evolution in a way which answers the demand of the user e.g., impressed efficiency is pursued to the extremity.

 

2nd edition Ver S

And ' To assure the improvement of the single step of output characteristics and the improvement of material feeling of the body section in March of 94, minor change. The second look was assured concerning the combustion form which is the base element of the engine, toward actualization of the “entire area impressed efficiency” aimed from with the equipment where the engine quality and adoption etc of 3 eye meter is superior in sharpness of new design which equips the fuel gauge anew are complete, position as a fixed turn model of 400cc class was designated as firm ones. 　Furthermore ' In March of 95, as it improves the output characteristics in the middle & high rotary limits, it designated also equipment specification more as [supotei], raised sport mind to a greater extent, the conspirators it is different, line-up more completeness e.g., “super impressed efficiency” is proposed types adds “CB400 SUPER FOUR version R”. And the CB400 SUPER FOUR series, e.g., approximately 56,000 units (*) it achieves at the sum total register quantity, has become the fixed turn model of automatic two wheels class since appearing. 　In order and this time, to answer the user needs which are diversified, [neikitsudo] [rodosupotsumoderu] of HONDA where it made the light running fuse which high material feeling and version R where the standard model has have, pursued impressed efficiency to ultimate “CB400 SUPER FOUR version S” to type add to the series, directs to the further next generation is proposed. (*) 1996 1 end of the month presently (the corporation) entire country it is light automobile association investigation

You adopted for power unit, with “low smooth output characteristics in the rotary limits in water cooling 4 cycles DOHC 4 valves serial 4 cylinders 399cm3 of established reputation, the PGM-IG control system (the electronic control ignition system) with 4-2-1 where it is superior in exhaust efficiency combining the exhaust pipe and lightweight aluminum siren sir powerful output characteristics in the high rotary limits,” improved the output characteristics in the middle & high rotary limits with succeeding the power unit of identical specification “CB400 SUPER FOUR version R” it loads. This power unit by the fact that optimum valve opening and closing time is set makes strong power feeling show in the wide rotary limits, makes that the machine is worked while the rider is mind, under all circumstances from troublesome urban district travelling to piquant winding travelling possible. 　And concerning latest version S, engine appearance black with it does there to be (a gloss) by the fact that, the high-class impression and spirit 悍 you produce.

As succeeding the [daburukuredoru] frame of the round section pipe of the same type “CB400 SUPER FOUR”, you adopt the frame. In addition as the front cross pipe is installed in the down tube same “CB400 SUPER FOUR version R”, moderate tenacity and rigidity have been compatible. 　The underside “of CB400 SUPER FOUR version S”, comfortable riding comfort and the dynamic flight quality which has response were held, there is an established reputation, “CB400 SUPER FOUR version R” in the base, from aiming toward the setting which it begins to appeal to the sensitivity of the rider, it modified part specification.

Because the brake, although being calm, was rich in the direct impression with high effect, makes the braking feeling of linearity concern actualize, the front brake of new development is loaded. 　Concretely, as opposition 4 pot carry per you adopt for the front disk brake, equipping the high Μ pad. Furthermore, from urban district travelling to winding travelling, the control characteristic which is superior it was compatible high effect at high dimension by assuring the optimization of each part including the floating disk.

Effect and the lever stroke which have the direct impression vis-a-vis input

Opposition 4 pot carry per adoption

The opposition 4 pot carry which this time is adopted anew per, the moving element at the time of braking (mass) it became possible former pin slide carry per vis-a-vis, the early response, made the improvement of the linearity actualize to decrease. In addition, the natural lever stroke impression reaction force impression of being rich in the direct impression not to be restricted to only the effect for input with the optimization of hydraulic ratio and the modification of the brake hose material, matching to sensitivity was made to actualize.

 

In order to emphasize the spirit 悍 image “of CB400 SUPER FOUR version S”, the prejudice which it is thorough even in the color combination of the underside section was poured. Concrete, as brake carry before & after finishing of the per magnetic gold is administered, the front disk hub from the former gold modification to black. In addition, concerning rear suspension, as the cover of aluminum forging make which administers alumite processing to the cushion spring adjuster section is added, adoption of the spring of black paint and label modification of the sub tank were administered. Furthermore, the spirit 悍 underside is produced, as the gold chain which produces the high-class impression new is adopted, the front & rear wheel there is a gloss in the drive chain and makes black paint e.g., from.

It renovates the form of the steering wheel grip rubber which is one of the parts where the rider is moved travelling feeling by direct, and the pattern of the surface is superior in handling feeling, it has made fits to the hand. 　In addition, chrome plating is administered to the steering wheel grip end, the high-class impression is produced. 　Furthermore, the high-class impression and spirit 悍 modifying the color tone modification and the marks of each part in order to be compatible. The tank mark, side Covermark makes the three-dimensional emblem of chrome plating and has made the Takasina rank finish. 　The seat epidermis does, 2 [shibo] of the surface and the side is modified vis-a-vis former one 貼, 貼 with assures the improvement of material feeling. 　The step holder designates finishing as mat black, spirit 悍 produces. 　The color ring, material feeling has set the variation of sparkling silver metallic and spirit 悍 mute black metallic and 3 types of vivid Italian lead-lead which overflow.

[Kushinagar]

PB 1

 

 

 

Version R

[Kushinagar]

　Furthermore as visual most felt the charm of direct 4, material feeling to be high adopting the exhaust pipe and the tapered muffler of unique gloss and all stainless steel make which has color tone to exhaust type. In order furthermore to tighten the forum, as from the exhaust pipe you hold the engine to the gathering section of clover type and in order to hold, you design, it assured the isometric conversion of the exhaust pipe, it could obtain the optimum exhaust pulsation effect by rectifying the flow of exhaust, clearing produced direct 4 sounds. 　In addition, [rajieta], as it decreases the opening of the cover and the substance to the utmost, even during simple constitution produced by installing the aluminum hairline plate in both sides the quality impression. In addition, in order it is symbol of inline 4, to show 4 these exhaust pipes more beautifully, [rajietaroahosu] was allotted to the body central approaching.

　On the underside, as the large diameter inner tube of φ41mm is adopted for the front fork, in the damper, the R tapered free valve III (RTFVIII) which can assure the stabilization of attenuation power quality and position dependence mechanism is adopted, comfortable riding comfort is actualized. 　In addition, as the aluminum extrusive material of polar thickly (33.5×80.0mm) angular type section is adopted to the rear fork, rigidity around the rear is guaranteed, the power impression it made the design which overflows. 　The reservoir tank attaching inverted damper of the gas charging type which is superior in the heat dissipation characteristic which has the piston diameter of φ36mm (preload adjustment mechanism to attach,) is adopted to rear suspension, as the attenuation power quality which is stabilized even the hard travelling time is made to show, also good quality of riding comfort has been compatible. Furthermore, it administered gold alumite processing to the reservoir tank, made accent around the rear. 　As the brake system which supports the underside on the front installs the large diameter floating disk of φ296mm with double, adopts 2 pot piston carries per combining, the single disk of φ240mm is equipped on the rear, the damping force where balance comes off securely vis-a-vis power efficiency, is guaranteed.

Handling in order to obtain the response which will be been secure, thought of matching of the double cradle frame which requested suppleness in first. Matched to the sensitivity of the rider high impressed efficiency was actualized from urban district travelling, to cruising, and high-speed travelling, according to the respective circumstance. 　When principal dimension is compared with “CB-1 TYPEII”, the wheel base 70mm was extended, don't you think? caster angle the 1°45 ' the [se] the handling which has the direct impression by 28mm lifting head pipe position, was actualized. 　Furthermore, side rigidity, both torsional rigidity approximately 30% low to set frame rigidity, the pliant running was actualized by 7mm low loading engine position. 　In addition, riding position designated the natural posture as the basis, even at the time of 2 passenger is room the seat high (770mm whose foot being attached characteristic is good) and, depending upon the seat of the long [me] which makes the fitting impression important.

2, the utility BOX of capacity 5.5L was equipped under the large-sized double seat which considers the passengers sufficiently, in order to be able to receive the lane wear and the like, consideration was administered finely. 　 And, it equipped the load applying hook which is useful to touring and the like in the left and right 4 places, used and the selfishness is good. 　 Furthermore maintenance characteristic with every day was considered, the center stand standard was equipped.

(1) clo - the simple 2 eye meter which has the meter housing of the [mumetsuki] finish.

(2) the halogen headlight of 60/55W which has the sufficient light intensity.

(3) the double horn which tightens the front face.

(4) φ41mm large diameter [innachiyuubu] which builds in position dependence mechanism and RTFVIII mechanism.

(5) [supotei] hollow 3 s

(6) the floating double disk of φ296mm which has the damping force which balance it could point in power efficiency. (7) 2 pot piston calipers which are superior in braking feeling -.

(8) [daburukuredohuremu] which pursues suppleness.

(9) The water cooling DOHC serial 4 cylinder engines which show smooth & powerful output characteristics.

(10) When parking and the center stand which is convenient at the time of maintenance. poke [arumihoiru] which engenders the image of running.

(11) The rear disk brake of φ240mm which in controller pulling is superior in braking feeling.

(12) The aluminum make pole which guarantees the rigidity around the rear it is thick the rear fork of angular section. (13) Stainless steel make chain cover of high material feeling.

(14) “Clearing all stainless steel exhaust pipe and the tapered muffler which play direct 4 sounds”

(15) the reservoir tank attaching inverted damper of the gas charging type which shows the attenuation power quality which is stabilized -.

(16) Tail lamp of 2 light types.

(17) The rear cowl which expresses the stirring impression.

(18) Being large-sized tandem travelling is considered, the double seat which is superior in the fitting impression.

(19) The seat lower part utility box of the 5.5L capacity which can receive the small article and the like.

(20) Forcibleness [ime] - [ji] [huyurutanku] of the capacity 18L which is done.

(21) The adjustment mechanism equipped brake bar which can adjust grip width.

(22) The bar handle of the Continental type which leads the riding position of the natural posture.

[Kushinagar]

Name : CB400 SUPER FOUR

Type : NC 31

Total Length x Total Width x Total Height : 2.085 x 0.735 x 1.080

Wheel base (m) : 1.455

Roadspace (m) : 0.125

Seat height (m) : 0.770

Vehicle weight/dry weight (kg) : 192/172

Riding in a car fixed capacity (person) : 2

Fuel comsumption rate (km/l) 60km/h fixed area travelling test value : 34.7

Minimum turning radius (m) : 2.6

Engine type : NC23E (water cooling 4 cycles DOHC 4 valves 4 cylinders

Total cubic displacement (cm3) : 399

Inside diameter x distance (mm) : 55.0 x 42.0

Compression ratio : 11.3

The highest output (PS/rpm) : 53/11,000

Largest torque (kgm/rpm) : 3.7/10,000

Carburetor type : VP22

Starting system : Self system

Ignition device type : Full transistor type battery ignition

Lubricating system : Force splash combined use system

Lube capacity (L) : 3.6

Fuel tank capacity (L) : 18

Clutch type : Wet multiple plate coil springs

Transmission type : Regular gearing type 6 step return

Change gear ratio :

- 1st gear : 3.307

- 2nd gear : 2.294

- 3rd gear : 1.750

- 4th gear : 1.428

- 5th gear : 1.240

- 6th gear : 1.130

Reduction gear ratio (primary/second) : 2.171/2.800

Caster (degree) / trail (mm) : 27deg 15' / 109

Tire size :

- Front : 110/70-17 54H

- Rear : 140/70-17 66H

Brake type :

- Front : Hydraulic type disk

- Rear : Hydraulic type disk

Suspension :

- Front : Telescopic system

- Rear : Swing arm system

Frame type : Double cradle

[Kushinagar]

1992 April, as for HONDA “[neikitsudo] [rodosupotsumoderu] of HONDA which bears the next generation how proper?” it was thorough pursued, (PROJECT BIG-1) the origin of development concept, announced CB400 SUPER FOUR. 　As this motorcycle has the water cooling DOHC 4 valves serial 4 cylinder engines which have the performance which excels in the heart, at the dimension where the handling quality which brings the enjoyment which is worked to the rider and the frame which holds suppleness are high materializes converts “the impression of running” with balance, establishes the genre of [neikitsudo] [rodosupotsumoderu] which becomes new, support of many motorcycle fans is received. 　Since selling, the sum total register quantity ' 31,529 units it records lightly 93 year 12 end of the month presently. In addition, presently favorable sale is recorded [neikitsudo] [rodosupotsumoderu] as best-selling e.g., 'at the annual sum total register quantity of 93 years 17,200 are exceeded. 　In order and this time, to answer the user needs which chase after the charm of further [neikitsudo] [rodosupotsumoderu], as it improves output characteristics furthermore, 'it developed new CB400 SUPER FOUR furthermore polishing was bet on impressed is development concept efficiency' e.g., material feeling of the body section is raised.

　At the time of the development of new CB400 SUPER FOUR, the takeoff characteristic good quality which the model has until recently and such as acceleration characteristic from the stickiness “low-speed smooth and the high-speed powerful” it is easy to handle low and all rotary limits in the rotary limits and extension in the high rotary limits output characteristics which that way, assure the second look concerning the combustion form which this time is the base element of the engine, it is one “of impressed efficiency” of running, furthermore it improved “the speed impression” when accelerating, it made the engine quality which had “[kire]”. 　In addition regarding equipment specification, in order “the joy of having” “the joy of seeing” “the pleasure which it polishes” and so on it owns furthermore to improve “impressed efficiency”, high quality and the value impression were pursued.

At the time of development, (PROJECT BIG-1) it is basic idea - Loading the water cooling 4 cycles DOHC serial 4 cylinder engines in the heart. - That body body to the last sexy & It is wild. - Possess the impressed efficiency which fascinates the heart of the person whom it runs. And so on to the nucleus, this time the “entire area impressed efficiency” as a keyword, it materialized converted the further evolution “of [neikitsudo] [rodosupotsumoderu] which bears the next generation”. “You think, “shine more hotly,” are deeper” “impression, strong”

With “low-speed smooth, you analyzed the combustion form of the water cooling DOHC 4 valves serial 4 cylinder engines of established reputation thoroughly high-speed powerful,” in the partial limits which contribute to the output improvement in the low & middle rotary limits and the improvement of acceleration characteristic you improved response characteristic over the entire area. 　Furthermore, flame noise was designated as emotional ones, toward the fact that increase and decrease of output matches with the sensitivity of the rider aimed. 　With these, substantial improvement of the acceleration impression and refreshment as balance it can point at higher dimension, it evolved as the strong power unit where it has versatile characteristic e.g., it makes to also the improvement of maneuverability contribute largely.

The engine as also combustion chamber form makes the shape [pentoruhu] combustion chamber thin with the adoption of the [pentoruhu] shape piston of new development, Pme (brake mean effective pressure) improved by setting squish height to spreading.

Ignition timing, in order to assure matching of the piston and the combustion chamber of new form, has assured optimization over the entire area. With this, it has contributed to the substantial improvement of transient output in the partial limits.

　Exhaust type large diameter conversion (φ28.6mm→φ35.0mm) did the 1st communication pipe of siren sir, improved response characteristic by assuring the decrease of exhaust resistance. In addition, you could obtain the strong direct 4 sounds where furthermore it was clear thickly by emphasizing the component of exhaust noise below 300Hz.

With the optimization of link form of the cam chain, the link quantity is decreased, cam chain noise is made to decrease as furthermore by taking a second look the 噛 込 behavior to the cam sprocket, clearing it has made makes direct 4 sounds be conspicuous more with the decrease of mechanic noise, e.g., it improves the tooth profile precision of the gear mission and is connected and assures the decrease of sound. 　 The frame underside, while succeeding the characteristic of the model which can control revolving power with increase and decrease of rear wheel traction with suspension setting and the appropriate body dimension which are easy to control body attitude in addition to pliant body rigidity, until recently that way, the ' Furthermore it improves the revolving control characteristic (enjoyment which is bent) which, is due to throttle operation with 94 models by loading the power unit which furthermore improves response characteristic, bodily sensation it is possible the enjoyment which the rider works.

[Kushinagar]

As for meters, the speed & which until recently administers similar chrome plating processing; In addition to the tachometer housing, as this time chrome plating processing is administered to also the ring section anew, it makes 3 eye meter of new design which equips the fuel gauge on the center, Takasina rank with respect to one class has made specification. 　Furthermore, speed & As the indicator lights inside the tachometer panel are made LED indication, being simple by designating the modification and the meter illumination of graduation arrangement of the letter board as the green, it has made the specification which has the composure. 　In addition, when high material feeling is produced by administering the design processing which makes the cutting aluminum plate represent simultaneously, the turn signal indicator light the left & the right each 1 it arranges the indicator light section which is arranged in the side one line, from it is easy to verify.

As the top bridge designates the steering wheel holder section as block construction, administers clearing paint after the cutting work of the bridge surface, the holder section after the buff grinding high material feeling makes the specification which overflows by administering clearing paint, furthermore raises the satisfaction which is owned.

　In addition to the helmet holder below the former seat, it sets the helmet holder of independence type to also the rear grip section of the left side, has considered in practicality.

　The three-dimensional emblem which administers [sachiraitometsuki] processing anew is adopted to the side cover, material feeling of side view is raised.

The hazard lamp which is superior in suffering visibility standard is equipped inside the turn signal lamp before & after. 　 　Operation of the steering wheel switch as it improves the moderation impression, newly founds the hazard switch on accelerator side, uses and has considered even selfishly.

The rubber and the plate which control the anti- wind from the radiator were newly founded in the tank underside. 　 　Chrome plated layer of the steering wheel pipe ended section was made thick, material feeling and resistance rusted characteristic improved.

(Sexy & it is the concept of PROJECT BIG-1); You insist wild image to straight, have expressed also the high-class impression simultaneously. 　 　The image color of CB400 SUPER FOUR which expresses the stirring impression and the [supotei] impression. 　 * With the candy lead-lead which has the kind of depth which is clear, while settling even, the [supotei] impression was expressed. 　 * Being wild CB400 SUPER FOUR has, the adult it expressed image with the two-tone color. * New color

[Kushinagar]

CB400 Machine Code

 

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[Kushinagar]

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HYPER VTEC (Variable Valve Timing & Lift Electronic Control System)

 

On 19 Jan 1999, HONDA announced the development of a new HYPER VTEC (Variable Valve Timing & Lift Electronic Control System) valve control system. This new system combines environmental-friendliness and increase output at all engine speed with 6.6% improvement in fuel efficiency. It uses "direct-actuated" hydraulic valve control technology to determine and allows for variation of the number of valves active depending on engine speed, but also provides for optimum lift amount and actuation timing of each valve thanks to specially designed camshaft profiles.

 

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http://i231.photobucket.com/albums/ee289/SingaporeBikes/CB400/ValveOpsPartial.jpg

 

http://i231.photobucket.com/albums/ee289/SingaporeBikes/CB400/ValveOpsFull.jpg

 

At low to medium engine speeds, one intake valve and one exhaust valve out of four valves in each cylinder remain inactive, leaving only two active valves per cylinder. This helps increase intake air speed and generate a swirl effect within the combustion chamber for increased power output. Reduced friction losses also contribute to improvement in fuel efficiency. At higher engine speeds all four valves in each cylinder are activated , to meet the increased gas flow requirements of higher revs.

 

http://i231.photobucket.com/albums/ee289/SingaporeBikes/CB400/ValveLayout.jpg

 

http://i231.photobucket.com/albums/ee289/SingaporeBikes/CB400/ValveTimingCamprofile.jpg

 

http://i231.photobucket.com/albums/ee289/SingaporeBikes/CB400/OutputCharacteristic.jpg

 

In Jan 2002, HYPER VTEC evolved into Spec II with the development aim to allow everybody to feel the power drive over the entire ranges. This was a result of voices in particular beginners, were unable to fully utilize the four-valve stage from above the revolution range of 6,700rpm. SPEC II achieved increasing torque in the middle speed range and smoother power by refining the valve timing, intake and exhaust systems, and the valve switchover timing revolution from two to four valves was changed from 6,750rpm to 6,300rpm. It resulted in a powerful and sporty engines, enabling one to actually feel VTEC in all driving ranges from low to top.

 

On Dec 2003, SPEC III was introduced. The switchover timing for a 6 speed only was changed from 6,300rpm to 6,750rpm to improve fuel consumption in cruising over high speed roads without spoiling the cheerful drive.

 

How VTEC Came About?

 

It was believed that VTEC originated from REV, a revolution responding type valve pausing mechanism in 1983. At that time, the demand for high power for sports bike engines lead to the studies to reconcile high power in high revolution range and excellent drivablity and high efficiency from idling throughout all ranges. An epoch-making variable valve system came into being, which enables switching over from two valves to four valves. This technology later developed into the variable valve timing mechanism, VTEC (variable valve timing and lift electronic control system), which forms the nucleus of automobile engines.

[PaLmEr]

alamak. translate from Japanese using Babelfish ah?

[ZoRoM]

OMG, Another hard work...

 

Waiting for this, Well done.