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The new MOTA V6.30 for Windows
The world's leading 2-stroke engine simulation software now runs on your Windows PC.
MOTA for Windows SLIDE SHOW OF FEATURES
Millions Of Tuning Variations Possible
| Design Exhausts That Work | Design Engine Porting |
| Full Cycle Simulation | Display HP & Torque Curves |
| Accepts 3.5cc To 500cc Engines | Runs 500 to 30000 RPM |
ONLY
(For Cost In Your Currency Click ON Amount)
The latest MOTA version 6.30 is an evolution of the V6.10 that includes some fabulous new tools.
The display of Power/Torque curves has been enhanced by the inclusion of a vertical cursor bar which extends over the entire height of the plotting area and whose position can be controlled by the mouse. Where the bar intersects each curve a horizontal cursor is drawn and, to the right of the plotting area, the corresponding power and torque values and the engine speed are displayed.
Additions
to the Expansion Chamber Construction Utilities
The
Expansion Chamber Construction utilities have been extended considerably
and are now accessed under a separate item on the Main MOTA Menu. A sub-menu
offers the two selections "Constructing the Development Pattern of a Cone"
and "Printing the Development Pattern of a Cone". It is the options provided
under the second selection which have been added to MOTA. You can now print
the development pattern of a cone and this may extend over several A4 pages.
Of particular note, you can produce the pattern of a cone having either
end or both ends angled to the cone axis. A set of explanatory diagrams
with text can be displayed. You may also define a single straight cone
and print the patterns of each of the pieces which, when welded together,
will provide an equivalent bend section. The number of pieces and the overall
bend angle are entered through the keyboard. A MOTA engine data file may
also be accessed and the pattern of each section of the expansion chamber
printed. Alternatively, any one section may be selected and patterns suitable
for the construction of an equivalent bend section printed This
new feature allowing creation and printing of Expansion Chamber sections
We
now have a simple 2 stroke expansion chamber design program.FREEdownload
here
This
program is not a part of MOTA, but it has been put together by the
same engineers as a starting point for those wishing to begin from scratch.
It calculates the dimensions for both double and triple stage diffuser
expansion chambers from a few basic engine dimensions. The information
used in the program's calculations was taken from the books ‘The
Basic Design of the Two Stroke Engine’ and the book ‘Design
and Simulation of Two Stroke Engines’; both books are written
by Professor G.P. Blair of Queens University Belfast, and published by
the Society of Automotive Engineers. You are well advised to read
at least one of the books mentioned above, since they contain the author’s
academic lifetime of knowledge on the two-stroke engine.
There
are several coefficients used in the design of the expansion chamber –
these are a function of the engine’s state of tune. Those
used in this program have been chosen for petrol engines, and are
in the range 50cc up to about 500cc per cylinder. It is doubtful these
formulae would work on small capacity glowplug engines, since the exhaust
gas temperature is much lower, and the engine speed is much higher.
How
it all began.......
MOTA®
is the brainchild of Dr Julian Van Leersum, mathematics graduate from Monash
University in Melbourne, Victoria. He is of Dutch/Swiss parentage,
but now permanently resident in Australia.
With the successful MOTA® software, Dr Van Leersum has managed to combine his professional interests in computing & mathematics with his enthusiasm for karting and motorcycle racing.
"It occurred to me that most home tuners cannot afford the expense of hiring time on a dynamometer to check the viability of adjustments or special parts" said Julian, "yet many people these days have a home computer which could easily run a suitably designed tuning programme."
"Although there is really no shortage of Books on the subject of 2-stroke tuning and preparation, I knew that an active software programme would be able to offer so much more." So, this is how MOTA® was conceived.
MOTA is an engine simulation program suitable for everyone from the enthusiast to the university researcher - from the beginner racer to the professional tuner. See testimonials. You can test your own engine and then re-test and compare your modifications - or build your ultimate engine right on the screen. Millions of fluid and thermo-dynamic calculations are made by MOTA representing the conditions inside your two-stroke engine throughout it's complete operating cycle.
No previous knowledge of the two-stroke cycle engine is required - just input the required data and then run MOTA to set in motion this powerful process. Test your own theories on porting and exhaust pipe design; explore the limits of various intake methods; or just look for the highest power output from your own engine.
MOTA will accept a single-cylinder design, which will also cater for many multi's where 2, 3 or more cylinders of the same basic layout are repeated. Easy-to-operate, accurate and hours of fascinating results to enjoy! Excellent graphics you can analyse and compare. MOTA's "Two-stroke Dyno" will give you and your PC the equivalent of many experts knowledge.
MOTA and it's related set of programs have been developed to simulate the performance of high-output single cylinder two-stroke engines. It will simulate one of the cylinders of a multi-cylinder two-stroke engine provided that the cylinders are identical in layout and dimensions and each cylinder has a seperate exhaust and induction system. It allows simulation of engines with reed-valve, rotary-valve and piston port timed induction systems. Simulation of engines with either a box-silencer or an expansion chamber is also possible.
Because MOTA solves the equations describing the conservation of fluid and thermodynamic properties throughout an engine, it requires specification of the full engine geometry. This is accomplished through a menu driven environment, which prompts you for the required dimensions which are easily entered via the keyboard.
The output from MOTA is provided in two forms; a file, which summarises the engine geometry and performance, and a graphical interface which allows you to plot the various performance variables. The output file and these plots can be printed if you have a printer connected to your computer.
How
MOTA works for you
The
strength in MOTA lies not so much in it's ability to predict accurately
the performance of an engine, but in it's ability to allow evaluation of
two different engine configurations. For example, if you have the MOTA
produced power curve for an engine, and you want to see if modifying one
of the exhaust pipe dimensions will increase or decrease power, then you
can change the particular dimension and re-run the MOTA simulator. Comparison
of the new power curve with the old will allow you to determine whether
or not the change will be worth making.
Where is MOTA different to other computer programs and tuning manuals - and what can it do?
- Accept most any dimension and variations of dimensions
- Operate on anyone's exhaust pipe theory by accepting almost all shapes
- Operate within the limitations set under certain racing regulations. i.e. A KT100S kart engine in Australia cannot be "ported" - so the ports physical dimensions cannot be modified. MOTA will run on your own inputted physical dimensions, but allow the alteration of port timings without other physical variations
- Accept that the data you input is from an engine that is running already, and will output it's predicted performance as a base for you to work from
- Accept alteration to one engine dimension at a time - either real or imagined, and produce all of the new outputs with the new dimension.
- Accept that ignition timing can be varied, and allows you to input such changes - possible or not, you can make the alteration to see what would happen
- Does not ask complex technical questions - data inputs are easily measured and entered on the screen via the keyboard.
- Accept almost limitless variations, so you can test ideas beyond any current theories or practises.
Most everyone will have an actual engine that they wish to play with, or make perform better. MOTA can do that easily and quickly. It does not trouble you with the in-depth why's and wherefore's of two-stroke engine design theory - you are not trying to build an engine from scratch. You can do one alteration, or many, and MOTA works with that.
Some
karting race results with MOTA.
The
current IWT "MR1" pipe for long circuit karting in the 100cc Non-gearbox
class was designed using MOTA. -- and it won the 2001 National Superkart
Championship for our own team member Michael Rogers. It is an evolution
of all of our earlier designs, that for the past 5 years have seen multiple
state championships come our way, and at most meetings qualify at the front
of the pack !!
The Mallala lap record for the 100cc Yamaha heavy class is now in the possession of Ian Williams, using this pipe as designed with the aid of MOTA.
The late model crankcase reed induction Yamaha YZ80 engine was "tuned" for Superkart racing using MOTA. to redesign the porting and design a new reed and exhaust system -- before the first engine had even been run !! From the first time these engines hit the track they have been winning right across Australia.
The exhaust design for this has been used to win multiple State and National Championships, as well as the reed design now being used as "the" setup for all karts run in this class across Australia today.
FOR MORE INFORMATION REFER TO THE MOTA USER MANUAL A HTML FILE
MOTA Operating System Requirements
Microsoft Windows 2000, Me, NT , XP, Vista or Win 7 or 8 ( 32 or 64 bit ) operating system
A minimum of 20MB RAM, VGA
colour display and 40MB of free hard disk space. minimum 233mHz Pentium
or equivalent
CD disk drive.
Microsoft Windows compatible
mouse and keyboard required.
Printer is optional - only
needed to produce hard copies of output graphics and files.
USB Port - ( USB hardware
security lock ( dongle ) included in program package )
Special features include
- Suitable for Kart, Motorcycle, chainsaw, personal watercraft, Model Aero and most similar engines.
- Accepts most expansion chamber designs.
- Methanol or petrol fuels accepted.
- Will test almost any reed valve material.
- Ignition timing can be varied, and 'curves' accepted.
- Integrated, box type or separate muffler designs accepted.
PURCHASING
AUSTRALIA
$A261.50 inc GST - POSTAGE
PAID
within Australia
OVERSEAS.
$251.50 AUD Airmail POSTAGE
PAID
Exported to most Countries
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