you for your interest in DynomationTwoStroke™ designed for Windows98/XP.
DynomatonTwoStroke is a DOS-based simulation that was originally released in
the mid-1990’s. A great deal of time and effort was expended in the
development of this comprehensive wave-action simulation (by several racers,
engine designers, two-stroke experts, and university professors expert in
engine-simulation technology). The businesses and individuals that purchased
the original Dynomation 2 Stroke program were pleased with the capability
and accuracy of the software. But because of the limited worldwide activity
in two-stroke engine development, program sales were limited and further
development was curtailed.
Now, Motion Software, Inc., has released an updated
version of DynomationTwoStroke that lets users install and run the program
under any version of Windows. Support for Windows not
only makes the program easier to use, but it also allows the growing number
of two-stroke enthusiasts to use this powerful simulation on Windows
Why Does This Program Rely On DOS?
DynomationTwoStroke (under the surface) continues to use the DOS-based API that exists in
Windows98/XP to execute program code and create screens, menus, and graphs
(see screen images below). Why? The
answer to that question is easy:
The prohibitively high cost of conversion to Windows!
While two-stroke engine development is on the rise again, the worldwide
interest in a professional two-stroke engine simulation is still limited.
The cost to convert this program into a full Windows program (like our
Dynomation-5, four-stroke simulation) would prevent it from ever being
released! But that doesn't mean that it lacks capability.
DynomationTwoStroke is a comprehensive and easy-to-use simulation! We
DynomationTwoStroke In A Nutshell
DynomationTwoStroke is a full-cycle simulation, meaning that it calculates
the complete fluid-dynamic, thermodynamic, wave-dynamic, and frictional
conditions that exist inside the cylinders and runners throughout the entire
360 degrees of the two-cycle process. It keeps track of the pressure waves
moving in the intake and exhaust systems and their effects on port/pipe
pressures and flow. The program performs hundreds of millions of
calculations at each rpm test point throughout the engine-analysis process.
Despite internal program complexity, the simulation is straightforward and
easy to use. Wtih DynomationTwoStroke, you'll build and test
engines in no time! You can depend on this package to produce solid,
accurate predictions of engine performance characteristics.
Inside A Running Engine—View and Analyze Intake and Exhaust Flow And
DynomationTwoStroke lets you peer inside a
running engine! It reveals–otherwise invisible–pressure waves and mass flow
in cylinders, engine passages, and expansion chambers. This simulation
accurately predicts power, torque, and many other engine parameters. Even
more importantly, it show you where you should focus your efforts to
DynomationTwoStroke can model a wide variety of
Number of Cylinders: 1 to 3 firing into joined chambers;
unlimited firing into individual chambers
"Live" Pressure-Wave Display of Leftward, Rightward, and
Total Pressure Waves (plus Flow Velocities) travelling in Expansion
and Port Velocities displayed for Intake, Transfer, and Exhaust Passages
Test, and Optimize Custom Expansion Chambers
Model Individual or Shared Expansion Chambers
Engines with Piston-Port Induction, Reed-Valve Induction, or Rotary-Valve
Select Carbon Fiber, Fiberglass, and Steel Reeds
Model Two to Six Transfer Ducts Per Cylinder
Exhaust Temps Can Be Calculated or Manually Entered
Sophisticated Combustion and Ignition Timing Modeling with BSFC
Various Intake Tract Lengths and Sizes
And Much More!
Program Outputs and Graph Results:
Power and Torque
BSFC (Brake Specific Fuel Consumption)
Pumping MEP (Mean Effective Pressure)
Peak Cylinder Pressure
Trapped Pressure Ratio
Delivery Ratio (same a VE in a four-stroke engine)
Scavenging Efficiency (a measure of charge purity in the
%EO to EC (percentage span through exhaust phase; used
for diagnosing Expansion Chambers)
Requires Windows98 or WindowsXP (32-bit).
Guarantee Your Satisfaction Or Your Money Back!
is available in the Motion Store
(on CD or as a Download):
(3Mb, Right click, select
Save Target As...)
Model Multiple Cylinders with Individual Expansion
to Three Cylinders Sharing a Single Expansion Chamber
Multiple Transfer Passages & Auxilary Ports
Rotary, Port or Reed Valves
Accurately Predict Power, Torque, BSFC, PMEP,
Cylinder Pressures, Trapped Compression Ratio, Delivery Ratio,
Scavenging Efficiency, and Much More!
Design/Tune Expansion Chambers with LIVE View of
Balance BSFC and Air/Fuel Ratio for Optimum Power
Model and Compare up to 10 Engines at Once
Customize Graphs to Your Individual Development
Accurate and Easy To Use; Encourages "What
If" testing to help
you discover new power secrets!
- Requires Windows98 or WindowsXP (32-bit
only). Will NOT
run on Vista, Windows7 or Windows8.
- A fast system processor (recommended 3GHz
or faster) will improve simulation speeds.
- A USB Port for the Security
Key required to run DynomationTwoStroke.
- A minimum of 512MB of RAM.
- A video system capable of at least
- Printer connected to
an LPT: port for direct printing from program. Can also print to any
Windows-Compatible Printer by
saving a report file, then printing from a Windows text editor (Notepad,