To lower the center of gravity,
Simply making the car lower is insufficient,
every heavy component should be located at the lowest possible position. |
The new rx-7's styling is unique. The low, wide front end
incorporates an integrated soft facia, and the large, center air intakes is flanked by
smaller side intakes. The fender peaks are clearly visible to the driver, for easier
maneuvering. The compact cabin is further evidence of the racing heritage. The smoked-lens
tail-lights make signals exceptionally clear to following drivers, while the integrated
design if the rear deck, fenders, and venturi-type spoiler leaves a distinctive
impression. Overall proportions - front, side and rear - were dictated by our pursuit of
performance.
In order to realize our performance targets, we were faced with the task of countering
centrifugal forces. On top of our exhaustive efforts to reduce weight, we endeavored to
lower the center of gravity down to the last millimeter.
The overall height has been lowered by 35 mm compare to the previous model. But, lowering
the overall height alone is not enough, and what is more important is the location of the
heavy components within the car. The following comparison with the previous model shows
the extent of our efforts. The bonnet has been lowered by 70 mm, the engine height has
been reduced by 50 mm and the hip-points of the seats have been lowered by 50 mm. The net
results is a 25mm reduction in the overall height of the center gravity. |
 |
 |
The width if the track is also a key factor. The wider the
distance between the left and right wheels, the smaller the weight transfer caused by
centrifugal forces. The track of the new RX-7 has been widened by 15 mm and 25 mm at the
front and rear respectively, compared to the previous model. Overall width has been
increased by 60 mm to accommodate these increases in track dimensions and the large-size
tyres.
Extensive wind-tunnel testing contributed greatly to the aerodynamic analysis and design.
The Aero-Wave roof is an example of this, its unique design accelerates air flow from the
windscreen and helps to eliminate turbulence at the rear of the cabin. A supercomputer was
used for simulation of dynamic forces and body rigidity leading to improved cornering
performance. The front spoiler, rear deck and rear spoiler were specially designed to
minimize front and rear lift.
The aerodynamic coefficients are as follows:
Cd (drag coefficient) =0.31
Clf (Front lift coefficient) =0.04
Clr (Rear lift coefficient) =0.01
The low, wide configuration of the new RX-7 was an inevitable result of our pursuit of
sports car beauty as well as of our performance targets |
|