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Author Topic:   desktop dyno 2000
gould
Member
posted October 20, 2003 04:32 PM
how accurate is this program? anyone else using it? thanks

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Drive it in deep, and come out hard!!


wizzard
Member
posted October 20, 2003 04:43 PM
It's a good tool, but it's just that a tool... use it to compare different combos and ideas - it'll give you an idea of what the engine will produce HP wise - the biggest thing is learning how to use it accurately - you have to put in everything in order to get numbers that are anywhere close - head flow, exact cam specs, piston volume (+-), HG thickness, deck height, etc.

Any dyno operator can get their dyno to produce +- numbers and of course you can get the software to do the same...

The only things that I would like from the software is the ability to do averages over an RPM range - to see what combo made the most power in the RPM range that I'm racing in... SUch as when racing the engine runs from 3500-7000 RPM, one combo makes 600 HP at 6800 RPM but only 200HP from 3500-6700, but another combo makes 500Hp straight across 3500-7000... extreme example, but the second combo would make more average power and that's the one I'd go with...



dirtbuster
Member
posted October 20, 2003 05:38 PM
I agree it is just a tool that will show general trends and i wouldnt take it much more than that. It will get you in the ballpark for horsepower/torque but is far from exact. Even if you input the best data you can find it can only get close not exact. There are too many other variables. It is based on mathematical equations of airflow and therfore assumes perfect ignition timing, fuel mixture, assembly etc. and cannot take into account subtle differences.


gonfast
Member
posted October 20, 2003 07:52 PM
works great for trying different cams in my motor. we are pretty limited to what we can do.

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Drive it in deep, and come out hard!!


Dixon
Member
posted October 21, 2003 12:33 AM
I've got it, and it's fun to play with, but I don't like how limited the intake selection is. It would be better if you could change length, volume, etc instead of just having a generic dual or single-plane.


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