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Old 01-12-2016, 03:39 PM   #21
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brain fart
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Old 01-12-2016, 03:39 PM   #22
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i'll calculate your frontal area.
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Old 01-12-2016, 03:39 PM   #23
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oh baby
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Old 01-12-2016, 04:03 PM   #24
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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.
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Old 01-12-2016, 04:05 PM   #25
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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
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Old 01-12-2016, 04:36 PM   #26
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Quote:
Originally Posted by aidandj View Post
Logs are from the dyno runs.




Thanks for the laugh. I needed this today.

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Old 01-12-2016, 05:02 PM   #27
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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.
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Old 01-12-2016, 05:41 PM   #28
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Old 01-12-2016, 06:43 PM   #29
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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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Old 01-12-2016, 07:08 PM   #30
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You can't set drag coef to 0.
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Old 01-12-2016, 07:16 PM   #31
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ITT: aidan learns the laws of nature
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Old 01-12-2016, 07:17 PM   #32
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Quote:
Originally Posted by 18psi View Post
ITT: aidan learns the laws of nature
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Old 01-12-2016, 07:17 PM   #33
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just open up the file

and divide by zero
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Old 01-12-2016, 08:00 PM   #34
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Quote:
Originally Posted by 18psi View Post
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
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Old 01-12-2016, 08:01 PM   #35
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Directions are for sissies.
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Old 01-12-2016, 08:06 PM   #36
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