(By contributor John Bleimaier)
The advent of paddle shifters in today’s cars should cause us to consider once again where the gear shift lever should ideally be placed. Paddle shifters located on either side of the steering wheel and affixed to the steering column allow for a manual override of automatic transmission function.
Derived from racing competition applications, paddle placement was decided upon because the gear changes could be effected without the driver having to move his hands from the wheel.
Current production car paddle shifter application is exclusively in the context of automatic transmissions, many of which are race car style clutchless manual gearboxes internally. I’ve always felt any transmission without a clutch pedal is inherently inferior as it removes the possibility of feathering engagement and eliminates an element of control, not to mention driving pleasure.
However, the placement of the gear selector in the immediate proximity of the
steering wheel is laudable. My 1965 Mercedes has the manual gear change on the steering column (four-on-the-tree, if you will), and on the basis of personal experience I can assure you that once a person gets used to this setup, it becomes the most natural-feeling place for the gear shifter.
Because shifting is now in the same plane as steering, the distance a driver’s hands must travel is minimized. With well designed linkages, as found in Mercedes-Benzes of the ‘50s and ’60s, the feel is crisp and the engagement is direct. Very satisfying. Indeed, during that period many of the finest sporting Alfa Romeos, Lancias and Saabs had column-mounted manual transmissions. They were wonderful, enthusiast vehicles. Saab and the Mercedes competition cars which won the prestigious Monte Carlo rallies during that era were all equipped with four-on-the-tree.
The idea of having the gear selector on the
floor dates from the time when the lever more or less directly actuated the shifting of the cogs in the transmission with virtually no extraneous linkages. This was a simple and inexpensive arrangement from a design and manufacturing perspective. However, once a series of linkages is introduced, placement of gear shift levers can be the lever can be dictated by ergonomics alone. Thus the development of the column-mounted manual shifter.
Subsequently the concept of “four-on-the-floor” became a marketing rather than an engineering principle. Madison Avenue decided that the gearshift should be located between the driver’s and passenger’s seats. Then followed the greatest boondoggle of all time, the placement of an automatic transmission selector on the floor. There is no conceivable engineering justification for moving from “P” to “D” with a lever sprouting from the floor.
Besides the ergonomic and sporting arguments for placement of the gear selector on the steering column, this makes for more flexible use of automotive
interior space. In a pinch I have been able to seat six passengers in my Finback
because there is nothing projecting from my drive shaft tunnel. I also have more
room for my right knee, even when I am alone in the vehicle.
During the 1970s and ‘80s the abomination known as the center console arrived on the scene. The center console, ostensibly justified by the presence of the gear selector on the floor, narrowed the driver and the passenger’s footwells. Narrow footwells mean leg cramps on long journeys. In most cars the center console encapsulates a substantial amount of dead space between the instrument faces and the firewall. I would pay extra if the reduction or elimination of the center console was made an option.
As I write this, temperature and humidity are soaring toward the century mark. Heat tends to focus our judgmental complaints and foster a spirit of griping and
testiness. I recognize this. However, I respectfully submit that automotive designers should not confine themselves to the cool aviaries of the air conditioned studio. They should undertake field research in the sweaty, real world. Particularly, folks who brought us the center console should be sent on assignment to Death Valley.
(Contributor John Bleimaier is an attorney at law, active Mercedes-Benz club officer, and automotive journalist for The Star magazine.)