The Honda CB500 Super Fore was unveiled at the Chongqing Motorcycle Show in China last fall. Although the frame has changed from a double cradle to a diamond and the rear shock has changed significantly from two to one, the CB500 SuperFore still retains the image of the CB400SF. What is the reason for this and what is the design rationale? A professional motorcycle designer will explain the design.
Table of Contents
- 1 A return to the "first generation" symbolized by the tank shape
- 2 The overall lines also go back to the first generation. Is the frame based on the naked premise?
- 3 The odd trick of making it look like a long tank
- 4 A Struggle between Modernity and Classicism
- 5 Worth it because we have been making them for 30 years
A return to the "first generation" symbolized by the tank shape
I haven't seen the actual bike yet, just pictures, but my first impression is "The SuperFour" that everyone can already tell is the successor model.I think the reason behind this styling is the high presence of the CB400SF in the Chinese market.Although the CB400SF is not officially sold in China, used models flow from Japan, and I hear that it has become a kind of envied car, a flagship of the legend over there.Since the SF is so popular that local manufacturers have been making copies of it, the sales side must have strongly demanded "styling that is clearly recognizable as a Super Ford. I feel that this is a straightforward expression without adding any strange new interpretations.

Honda's booth at the Chongqing show displays successive generations of the CB400SF to showcase the strengths of the "Legend."

The popularity of the CB400SF in China is also confirmed by the presence of "look-alike" models. The photo shows a ZXMOTO 500F model.

Here is a rough sketch of the CB1000SF (SC30). The fuel tank and tail cowl sections are clearly "sloping shoulder" shaped, inspired by Porsche rear fenders, etc.

You can see that the overall impression, especially the atmosphere created by the fuel tank, is close.

The NC42, launched in 2007, is a FI version of the previous NC39 with FI and other improvements. The photo shows the final model, which will be discontinued in 2022.

The difference between the NC31 and NC42 fuel tank sections is illustrated in the following image: the NC31 has a "straight shoulder" line from the top of the tank, whereas the NC42 has a cut-down surface from the top of the tank, and the surface where the emblem is affixed (the blue line) is more raised than that of the NC31.

Comparing the tank emblems of the CB500SF and NC42 from the side, we can see that the CB500SF is lying in the backward direction, while the NC42 is vertically up. That is how different the tank sections are.

The NC39 CB400SF, launched in 1999 with a newly designed chassis and an engine with "HYPER VTEC" that switches between 2 and 4 valves, has a section of the fuel tank that is quite different from the NC31, including a spoon-gouged shape between the tank top and sides. This tank shape was also carried over to the NC42.

So, why did the NC39 differ from the NC31 in the fuel tank section... perhaps because of the importance of commonality with the CB1300SF (SC40), which was introduced the previous year, 1998? As you can see, the tank shape is quite similar.
The overall lines also go back to the first generation. Is the frame based on the naked premise?
Let's return to the CB500SF, this time focusing on the overall lines.The horizontal line of the tank bottom drops down toward the side covers, then connects to the horizontal top line of the side covers, and then lifts up to meet the line coming up from the side covers with a click around the tandem seat.The CB500SF and NC31 are also very similar in the way these lines are routed.Conversely, you will notice that there are no such lines on the NC42, and no bumps exist in the bottom line of the seat.

The way this line runs overlaps with the NC31 to an impressive degree. The design of the side covers as independent elements, which will be discussed later, is also common.

In contrast, on the NC42, the line under the tank leads to the side covers, which are continuous in design. The line under the seat is also straight, with no clicky bounce.

Compared to the NC31 on the far left, the NC42 in the center appears to have a retracted frame pipe in front of the side covers (note the distance from the swingarm pivot), and the triangle in which the side covers fit is smaller. The side covers on the CB500SF, with its diamond-shaped frame, are free from these restrictions of frame form.
The odd trick of making it look like a long tank
Another hidden design feature of the CB500SF is the fact that the fuel tank looks long for a modern motorcycle.The long tank is an element unique to so-called classic motorcycles from the era when the rider's seating position was in the rear, but modern motorcycles have a forward seating position, making it very difficult to reproduce a long tank. All the vehicles in the "neo-classic" genre struggle with how to create this long tank look.The CB500SF also has a very modern body structure.Thenewly designedengine has a short front/rear length and a longer swingarm, resulting in a modern and sporty configuration with a center of gravity that is much closer to the front.However, the line at the rear end of the fuel tank is sloped backward, and the line at the front end of the seat is adjusted to match this angle, creating a very good visual impression of a long tank, which is also reflected in the tank graphics.In other words, the lower half of the body is modern, while the upper half contains classic, relaxed elements, with the long tank at its core. The CB500SF is a bike like the CB500SF.

The rear end of the fuel tank is sloped back and the line of the seat matches this, creating a visually long tank effect; compare this to the NC31 and 42.

The four lines shown in the line are almost horizontal, which emphasizes the level feeling of the car body. Although parallel lines are not a must, such detailed treatment greatly affects the overall neatness of the body.
A Struggle between Modernity and Classicism
Looking at the details, the treatment is very modern while still having a classic feel. Take the headlights, for example. It has round eyes, but the LEDs are split into upper and lower halves, a unit that is similar to the GB350 and CB1000F. The rim of the light is not rounded as in the past, as if it were made by iron stamping, but rather, it is processed as if it were cut with a sharp edge.Furthermore, this rim is quite thick in the front view, and although the CB500SF's headlight unit itself is small like an LED light, the case itself shows the effort to make the volume look bigger...somehow. The volume of the headlight is very important in terms of the overall proportions of the vehicle, so it must have been controlled.Also, the light rims and stays, which used to be shined with chrome plating, are now expressed in satin or aluminum-like metal, which contributes to the overall modern impression. In this day and age, plating can look a bit old-fashioned, but I feel that the classic desire to "place shiny objects" is expressed through modern textures and processing methods.

The headlight rims have a characteristic shape with edges and thickness, which seems to be a control to make the lights, which have been downsized by the use of LEDs, look more voluminous. The satin-like metallic effect is also modern.

The conventional CB400SF has a design with two lamps shining roundly in a square lens. A development of this?

The LCD meter tends to be a spearhead, but it is indispensable for taking advantage of the latest features, such as the "Honda Roadsync" smartphone integration.

Although not mentioned in the text, the engine has a high cylinder height for its displacement and follows the BIG-1 style of "a magnificent tank and a magnificent engine" here as well. The oil filter, which was placed in front of the engine on the NC42, has been moved to the oil pan area, which looks more beautiful. If they moved the filter for design purposes, that's a big deal, but in any case, it must have contributed greatly to the freedom and handling of the exhaust pipe."

Conversely, are there any areas of concern? When asked, "I am concerned about the fact that the stripes on the tank appear to be slightly backward compared to the momentum of the tank bottom. The distance between the stripe and the bottom edge of the tank narrows as you go backward, making the horizontal tank look backward. I feel that a slight adjustment of just a few millimeters could enhance the styling. It's just my own trivial impression..."
Worth it because we have been making them for 30 years
All in all, this new model is a "no-frills" design. It combines modernity and universal classicism at a high level, and I think there are few people who dislike it if they are fans of science fiction.A model change a decade ago might have included abrupt lines and details in an attempt to force a new look. This time, however, the heritage and values that have been spun over time are honestly reproduced in the product appeal and styling. We will continue to create for our customers the "value of time" that money cannot buy. I think this is a very good corporate activity.More than 30 years have passed since the CB400SF made its debut. Having that much history is a strength that no emerging Chinese manufacturer can ever imitate. Honda-san has been able to use their "legacy" weapon honestly and skillfully. This is one car that shows such a margin and sincerity toward its users.

The CB500SF was literally the center of attention in Chongqing, and when it appears in Japan as the new CB400SF, it is sure to create a huge sensation as the long-awaited revival of the 400cc 4-cylinder naked bike. We have high expectations for it!
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