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Old 05-10-2019, 12:21 PM   #141 (permalink)
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Quote:
Originally Posted by JulianEdgar View Post
Thank you!

Personally, I think for the amateur modifier, my videos on measuring surface body pressures are more of a breakthrough. eg https://youtu.be/Vb859fOe-S0
That message is definitely knew in my amateur experience of observing videos like this. But the cursor you're using to point to different features in the video doesn't come out on screen. I don't know about other people, but I'm unable to see the cursor at all as you move it around. Most of your points are still understandable, but that's partly cuz I'm used to watching videos like this and I think new people might have great difficulty understanding what you're discussing because they can't see where the cursor is.

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Old 05-10-2019, 12:50 PM   #142 (permalink)
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https://duckduckgo.com/?q=cursor_highlight_for_videos
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Old 05-11-2019, 06:20 PM   #143 (permalink)
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Yes the cursor was a bit sick for that video. However, I do have another video coming up that better explores the techniques for direct measurement of panel pressures on cars.
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Old 05-11-2019, 07:47 PM   #144 (permalink)
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Do the cursor highlighting tools sound like they'd help?

I'd like to find someone who wants to produce videos like you do. Because...

I watched two Youtube videos—
Plate Echo - The Greatest Studio Effect Of All Time!
Fran Blanche 71K views 2 weeks ago
and
Fantastic DIY Speakers for less than $30!
Tech ingredients 567,891 views Jan 2018

Fran's lab opens up the Plate Echo and shows it's schematic. Tech Ingredients shows that the construction of the commercial product from the 1960s is flat wrong.

A 3x4ft panel as a backdrop would provide a good tunable acoustical environment. Simply spraying it with Florescent Green paint would make a fine green screen. I always admired the way EVTV had a green screen and shiny desktop . The result is an interesting drop out effect.

I'd like to make one but shipping to Australia would be prohibitive. The skills required are right up your alley.
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Old 05-11-2019, 08:15 PM   #145 (permalink)
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I am using a cursor highlight tool - eg https://youtu.be/uXYLCxq5YjA
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Old 05-12-2019, 08:25 PM   #146 (permalink)
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The Tesla doesn't have any really special tricks as highlighted in that video - but it's funny how if it's Tesla it's suddenly news worthy.

Even the C pillar fences have been on the Cruze for nearly a decade:



Except they're simply stuck to the rear window - an easy DIY opportunity.

I wonder how much of the Tesla's low CD comes from not having an exhaust to mess up undercar flow.
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Old 05-13-2019, 05:47 PM   #147 (permalink)
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Quote:
Originally Posted by oldtamiyaphile View Post
The Tesla doesn't have any really special tricks as highlighted in that video - but it's funny how if it's Tesla it's suddenly news worthy.

Even the C pillar fences have been on the Cruze for nearly a decade:



Except they're simply stuck to the rear window - an easy DIY opportunity.

I wonder how much of the Tesla's low CD comes from not having an exhaust to mess up undercar flow.
I covered the Tesla because of its exceptionally low drag coefficient... something for example the Cruze doesn't have. The flat underfloor of the Tesla, minus exhaust, would obviously be responsible for some of that low drag.
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Old 05-13-2019, 06:01 PM   #148 (permalink)
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Basics of tuft testing: https://youtu.be/CsREhs9zZTQ
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Old 05-15-2019, 10:46 AM   #149 (permalink)
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Tesla drag

I would add,that the Tesla lacks the cooling system drag of an ICE automobile.
On my pickup truck,this constituted Cd 0.027.Ouch!!!!!!!!!!!!!!!!!!!!
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Old 05-15-2019, 05:37 PM   #150 (permalink)
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Measuring car panel aerodynamic pressures - https://youtu.be/OuSf3K6yuMc

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