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Difference between revisions of "Honda CBX750F"
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== Overview == | == Overview == | ||
The release of the CBX marked the | The release of the CBX marked the | ||
end of 15 years of uninterrupted CB750/4 production, involving countless | end of 15 years of uninterrupted [[Honda CB750K|CB750/4]] production, involving countless | ||
revisions, new engines and updates. Honda were the first to launch an inline | revisions, new engines and updates. Honda were the first to launch an inline | ||
750/4 - the original superbike -back in 1969. It used a SOHC, eight valve | 750/4 - the original superbike -back in 1969. It used a SOHC, eight valve | ||
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valve engine and produces 91bhp. | valve engine and produces 91bhp. | ||
The CBX differs from its many predecessors in some significant ways. The top end of the motor is remarkable for employing hydraulic tappets, hardly a new idea | |||
The CBX differs from its many | |||
predecessors in some significant ways. The top end of the motor is | |||
remarkable for employing hydraulic tappets, hardly a new idea | |||
(Harley-Davidson have used them for decades) but unique on a Japanese | (Harley-Davidson have used them for decades) but unique on a Japanese | ||
production motorcycle. The advantage to the owner in not having to set 16 | production motorcycle. The advantage to the owner in not having to set 16 | ||
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valves making for less reciprocating weight. | valves making for less reciprocating weight. | ||
Weight saving and compact design are in evidence everywhere on the engine. Its width was reduced by placing the big 320W alternator behind the cylinders instead of spinning on the crank end. Height was reduced by making the sump shallower and redeploying | |||
Weight saving and compact design | |||
are in evidence everywhere on the engine. Its width was reduced by placing | |||
the big 320W alternator behind the cylinders instead of spinning on the | |||
crank end. Height was reduced by making the sump shallower and redeploying | |||
the front frame tubes as oil carriers, a novel redistribution that actually | the front frame tubes as oil carriers, a novel redistribution that actually | ||
increases the total oil capacity. Finally, Honda pruned the engine length by | increases the total oil capacity. Finally, Honda pruned the engine length by | ||
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direct gear from the crank; one of the crank webs has been turned into a | direct gear from the crank; one of the crank webs has been turned into a | ||
gear pinion. | gear pinion. | ||
Engine performance is marked by | Engine performance is marked by | ||
smoothness and excellent tractability. The CBX makes good low-down power | smoothness and excellent tractability. The CBX makes good low-down power | ||
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roadholding are exceptionally good for a bike of this size and weight. | roadholding are exceptionally good for a bike of this size and weight. | ||
The CBX is genuinely flickable, largely because of its low frontal area and careful weight distribution | |||
The CBX is genuinely flickable, | |||
largely because of its low frontal area and careful weight distribution | |||
(48.6/ 51.4 front and rear). It is stable up to top speed though the smart | (48.6/ 51.4 front and rear). It is stable up to top speed though the smart | ||
and sleek half-fairing is more of a sports cockpit than a touring | and sleek half-fairing is more of a sports cockpit than a touring | ||
windcheater. The dual headlights are a bonus for any road user, 120W of | windcheater. The dual headlights are a bonus for any road user, 120W of | ||
sharp illumination on dip or main beams. | sharp illumination on dip or main beams. The bike is a shade quicker and more powerful than the [[Honda VF750|V4 VF750]] which was also released early in 1984. | ||
and more powerful than the V4 VF750 which was also released early in 1984. | |||
In 1983, Honda replaces the [[Honda CB750F|Honda CB 750 FC]] by | |||
In 1983, Honda replaces the Honda CB 750 FC by | |||
a new model, CBX 750, even more oriented sport. This model comes in | a new model, CBX 750, even more oriented sport. This model comes in | ||
addition to the VF 750 S 4-cylinder V-giving birth to the line of VFR. | addition to the [[Honda VF750S|VF 750 S 4-cylinder]] V-giving birth to the line of VFR. | ||
The CBX 750 catches the eye with these wheels Comstar black, black engine, | The CBX 750 catches the eye with these wheels Comstar black, black engine, | ||
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the VF 750. | the VF 750. | ||
Its engine is derived from the engine of CBX 650. In this engine, it | Its engine is derived from the engine of [[Honda CBX650|CBX 650]]. In this engine, it | ||
retains the dual cam shaft and four valves per cylinder. The displacement | retains the dual cam shaft and four valves per cylinder. The displacement | ||
of 750 cm3 was obtained by increasing the bore (from 60 to 67 mm) and a | of 750 cm3 was obtained by increasing the bore (from 60 to 67 mm) and a | ||
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contributes to better oil cooling. | contributes to better oil cooling. | ||
Another typical engine | Another typical engine for its low maintenance. In addition to the | ||
electronic ignition, Honda has equipped the engine of a remedial hydraulic | electronic ignition, Honda has equipped the engine of a remedial hydraulic | ||
valve. | valve. | ||
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If at its output, the machine could be classified among the 750 | If at its output, the machine could be classified among the 750 | ||
successful, Suzuki will dethrone quickly with his GSX R 750. To follow | successful, Suzuki will dethrone quickly with his [[Suzuki GSX-R750|GSX R 750]]. To follow this course to radicalization, Honda fate in 1985 CBX 750 F-II or [[Honda CB900F Bol D'or|Bol d'Or]], whose main developments concerning the replacement of the fairing Top of | ||
this course to radicalization, Honda fate in 1985 CBX 750 F-II or Bol d'Or, | |||
whose main developments concerning the replacement of the fairing Top of | |||
hoof and a full fairing, completely obscuring the engine. It will however | hoof and a full fairing, completely obscuring the engine. It will however | ||
be marketed until 1987. It was not until 1992 to see again a 4-cylinder | be marketed until 1987. It was not until 1992 to see again a 4-cylinder | ||
in-line 750 cm3: the Honda CB Seven Fifty. | in-line 750 cm3: the Honda CB Seven Fifty. | ||
==Specifications== | |||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||