New Software for Modeling Vehicle Acceleration
ShiftMaster for DOS v3.0 for IBM and Compatible Computers

November 11, 1994 -- Drag Racers and car enthusiasts are lauding the
release of ShiftMaster for DOS v3.0. This easy to use software package
accurately predicts acceleration for all types of vehicles, from street
car to dragster, from Mercedes to Mustang. ShiftMaster allows its users to
create a customized vehicle profile and to quickly generate optimal shift
points, basic acceleration data, a power curve, and even a quarter mile
drag racing timeslip.

Unlike existing programs of this type, ShiftMaster for DOS uses an
object-oriented design, allowing a vehicle to be represented by seven
logical parts. Environmental Conditions, Chassis, Transmission, Tires,
Engine, Driver Options, and Advanced Options. Eric Goehl, the developer
and President of ShiftMaster Enterprises is a professional software
engineer and performance enthusiast. "I developed ShiftMaster to answer my
questions about vehicle acceleration and the effects of a variety of
conditions and modifications on acceleration," says Mr. Goehl. "The
products already on the market were difficult to use, and omitted some key
elements."

ShiftMaster computes acceleration by applying the influences of over 100
variables that affect a vehicle's acceleration. Advanced numerical and
computational techniques are used to compute a comprehensive model. The
program accepts user inputs to describe weather and operating conditions,
vehicle chassis information, transmission type and ratios, tire type,
engine data, driving style and more. These values are entered in a
Windows-like interface in which users open dialog windows to change
parameters. ShiftMaster responds to mouse clicks and keystrokes equally
well.

Also included with the software is a 75 page user's guide that walks you
through the basics of modeling a car. A detailed description for each
variable is also provided. On-line context- sensitive help is only a
keystroke away at any time.

Some exciting new features include a real-time sound option, and a library
of over 50 sample vehicles. Enable the real time sound and you can hear a
slipping clutch, loss of traction, and all events timed as they would
happen for a real car.

System Requirements: ShiftMaster for DOS requires an 80286 or higher
processor IBM compatible computer with 512k of DOS memory. ShiftMaster
uses 1 MB of hard disk space when installed.

ShiftMaster for DOS v3.0 is available by sending a check or money order for
$99.00 (plus $3.50 shipping and handling) to ShiftMaster Enterprises, PO
Box 404, Hudson, MA 01749 or order by phone (508) 568-1496.

SOME NOTABLE FEATURES INCLUDE:

- Optimal shiftpoints are determined by vehicle weight, driveline gear
  ratios, driveline efficiency, engine output and redline, ambient
  weather conditions, tire size and type, and the rotational inertia
  of the entire drivetrain.
- Separate tire models for Radial, Bias Ply, and Racing Slicks.
- Driving skill (how fast you shift, powershifting, launch
  technique, etc.).
- Only 2 engine data points, Peak Torque and Peak Horsepower, are
  needed to generate a complete torque curve (graphing available).
- Effects of air temp, barometer, altitude, humidity, and wind.
- Top speed and all common magazine test data shown.
- Effects of chassis layout (drag, lift, weight distribution, etc.).
- Separate models for Front Wheel, All Wheel, or Rear Wheel drive.
- Advanced concepts including Rolling Resistance and Rotational
  Inertia (flywheel effect) default to proper values, and are
  modifiable for the undaunted.
- There are more than 50 complete vehicles already setup as examples.
- Single page printout that includes all relevant input and output.
- On line context-sensitive help -- one keystroke for help at all
  times.
- The latest Object-oriented designed software with a consistent user
  interface.
- 75 page professional User's Guide.

ShiftMaster Enterprises
PO Box 404              phone & fax   (508) 568-1496
Hudson, MA 01749        email:        shiftmastr@aol.com

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