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Excerpt from Chapter 10 – Making Your MINI More Responsive
Getting Faster Response
For most drivers, driving performance is often synonomous with quick response
from the car when shifting gears, letting out the clutch, and accelerating.
These aspects of the car’s behavior are directly affected by the gear
shift lever, the clutch, and the flywheel, and all of these components
can be upgraded to improve driving satisfaction.
Short Shifter for Shifting Satisfaction
One of the most satisfying aspects of performance driving is to run the car up
through the gears with a series of crisp fl icks of the shift lever. In the stock MINI, the
transmission and gear shift linkage are designed to make this process fairly seamless, but
the “throws” — the distance the shift lever has to be moved between gears — are fairly
long.
The problem here is that while you are moving the shift lever from one gear
position to the next, you have to have the clutch pedal in and the clutch disengaged.
That means that the car is simply coasting. And coasting means you’re wasting time.
If it was possible to shorten the distance that your hand has to move to shift gears,
then the time lost coasting between gears would be reduced. And that means you can get
back on the throttle sooner during each shift of gears. It also means that your “heel and
toe” will work more effectively on downshifts, because there will be a shorter period of
time between blipping the throttle and actually changing down into the next lower gear.
Reducing the shifter distance is a straightforward improvement, taking advantage
of the principles of leverage. All that is required is installation of
an extension on the lower end of the shift lever. This changes the leverage
between the shift lever and the rod that connects it to the transmission,
so that you don’t have to move your hand as far to make the gear change.
This modified gear lever is often called a “short shifter.”
Of course, if you do recall eighth-grade physics, you might remember that there
is a trade-off between force and leverage. If you move the fulcrum closer to the side of
the lever being pushed down, you do decrease the distance the lever has to be pushed to make the other end move the same distance, but you also increase the force required at
that end. Changing to a short-shifter will mean that you have to push a little harder to
make gear changes, but you should find that the change is barely noticeable.
One example of a short-shift kit is the The Ultrik short shift kit, which is
available for approximately $90. This kit consists of the extension to
the shift lever and a modified dust cover plate for the box that encloses
the shift lever mechanism under the car.
Working underneath the car, the mechanic removes the original dust cover
plate, disconnects the shift rod, adds the extension, makes some alterations to the
shift lever case, and then installs the new dust cover plate. The mechanical work is
not complicated, but it does involve raising the car, removing the exhaust system
and modifying the case. Most owners will prefer to leave the work to an experienced
modification shop.
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