ITT: We discuss Virtual Dyno settings

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01-12-2016, 02:39 PM

#21

aidandj

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brain fart

01-12-2016, 02:39 PM

#22

aidandj

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i'll calculate your frontal area.

01-12-2016, 02:39 PM

#23

18psi

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oh baby

01-12-2016, 03:03 PM

#24

pdexta

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You can adjust coefficient of drag in Virtual Dyno, you should set it to 0 and see how well it matches up.

01-12-2016, 03:05 PM

#25

18psi

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yeah I was gonna say you can play with that, but I'm not sure how accurate the results will turn out. never done that. try it and report back. or just do a pull on a flat road like the rest of us humans lol

01-12-2016, 03:36 PM

#26

hornetball

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Quote:

Originally Posted by aidandj

Logs are from the dyno runs.

Thanks for the laugh. I needed this today.

01-12-2016, 04:02 PM

#27

DNMakinson

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That's funny. VD also uses the mass of the car. Dynojet accelerates the drum IIRC.

Use a real road pull, or better one in each direction.

01-12-2016, 04:41 PM

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01-12-2016, 05:43 PM

#29

deezums

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Go to the settings and you can apply custom fields to make boost pressure plot proper, like this for my MS2.

This is one way, then back. Stock settings for a miata.

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ITT: We discuss Virtual Dyno settings-brbmrmi.jpg

01-12-2016, 06:08 PM

#30

aidandj

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You can't set drag coef to 0.

01-12-2016, 06:16 PM

#31

18psi

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ITT: aidan learns the laws of nature

01-12-2016, 06:17 PM

#32

aidandj

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Quote:

Originally Posted by 18psi

ITT: aidan learns the laws of nature

01-12-2016, 06:17 PM

#33

18psi

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just open up the file

and divide by zero

01-12-2016, 07:00 PM

#34

Morello

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Quote:

Originally Posted by 18psi

cause the VD software calculates drag/resistance, which you don't have on a dyno

Or, more significantly, it uses the weight of the car to calculate how much work the engine is doing to accelerate the car at the rate shown in the log

Which is why the directions say to do it on a flat surface. You know, on a road...
Whether Dynojet uses a drum mass or eddy current (they make both) is irrelevant