scottf200

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a)
Desc: [i1Tesla - YT channel - Brian] took the CyberTruck to my local wind tunnel at A2 Wind Tunnel in Mooresville NC. To see the efficiency of the different ride heights. Plus what the mirrors off and tonneau cover open. Shocking results

* Very little Cd difference WITHOUT side mirrors! See table below. " c) " section highlights area
* Does wrap, ceramic coating, etc help: NO -- link to post/transcript

Title: TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results
Author: i1Tesla



NOTE:
_ Cd values are accurate (relative) when comparing scenerios to each other (eg with and without side mirrors; with and without tonneau cover; etc).
_ However, as explained in the video from a professional at that company --- regarding the below Cd table values that the tunnel wasn't built to test taller vehicles like trucks (vs race cars, bikes, etc) and the results could be slightly off. ie. Tesla claims 0.34 vs 0.38+ below. The professional said that tunnels that account for taller vehicles may be off more like 0.01 +/-
h/t: Gurule92

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) Wind Tunnel results i1Tesla


b) Cd explanations.
Cd values are accurate (relative) when comparing scenarios to each other
  • with and without side mirrors
  • with and without tonneau cover
  • etc
Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) oepnh27-


Per the professional in the video ... a flat-faced object that matched the profile like below would be ~1.0 Cd and the Tesla CyberTruck value is 0.34 Cd (depth and air flow) uses about 34% of that energy / effort / force to go down the highway.

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) 4mokbgs-


c) Re: [Very little Cd difference WITHOUT side mirrors! See table below]
Turns out in this example given the Cybertrucks shape that it makes very little difference so it does not at all seem worth the trouble. I bet dropping 1 MPH is even better efficiency improvement [though I haven't tried ABRP as an example to see that ;) ].

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) jGhGKy2

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) b3UqjEM


d)
RELATED to another post of mine in the past:
----------------------------------
Related to the aero, I thought this video was quite interesting and likely has been discussed but seemed to go along with your comments.

The below is about how far the 'sails' are angled in (and I thought was a surprising nugget) but the whole video is good on the front and rear air pressures.

Title: How The Cybertruck Is More Aero Than It Looks
5:37 or 337 secs in.


QAfcJms.jpg


ZErRd8w.jpg

Y3YPorl.jpg


Images create from AirShaper videos
Sponsored

 
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Gigahorse

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Desc: We took the CyberTruck to my local wind tunnel at A2 Wind Tunnel in Mooresville NC. To see the efficiency of the different ride heights. Plus what the mirrors off and tonneau cover open. Shocking results

Title: TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results
Author: i1Tesla

Finally a worthwhile CT vid.
Any chance you will go back with some of the aftermarket stuff, like roof racks etc?
 
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scottf200

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Gurule92

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probs good to mention that the tunnel wasnt built to test trucks and the results could be slightly off. Still cool though
 

drdrugs

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This is awesome... I totally understand all of it.

But... uh... for people who dont understand what the F this means... can someone explain it to us.. i mean them.
 
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scottf200

scottf200

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probs good to mention that the tunnel wasnt built to test trucks and the results could be slightly off. Still cool though
Thanks. I added a NOTE.
 

fhteagle

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Interesting take, especially with the giant jumps in Cd with ride height.

Don't have time to watch the video at this moment, were these taken with wheels static or wheels rolling?
 
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scottf200

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This is awesome... I totally understand all of it.

But... uh... for people who dont understand what the F this means... can someone explain it to us.. i mean them.
Cd values are accurate (relative) when comparing scenarios to each other
  • with and without side mirrors
  • with and without tonneau cover
  • etc
Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) OEPnH27


Per the professional in the video ... a flat faced object that matched the profile like below would be ~1.0 Cd and the Tesla CyberTruck value is 0.34 Cd (depth and air flow) uses about 34% of that energy / effort / force to go down the highway.

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) 4MokBGs
 
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scottf200

scottf200

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Interesting take, especially with the giant jumps in Cd with ride height.

Don't have time to watch the video at this moment, were these taken with wheels static or wheels rolling?
Static.
Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) ohDlpzN

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) jj3d2bT
 
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rizvend

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a)
Desc: We (i1Tesla) took the CyberTruck to my local wind tunnel at A2 Wind Tunnel in Mooresville NC. To see the efficiency of the different ride heights. Plus what the mirrors off and tonneau cover open. Shocking results
[Very little cD difference WITHOUT side mirrors! See table below]

Title: TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results
Author: i1Tesla



NOTE:
_ cD values are accurate (relative) when comparing scenerios to each other (eg with and without side mirrors; with and without tonneau cover; etc).
_ However, as explained in the video from a professional at that company --- regarding the below cD table values that the tunnel wasn't built to test taller vehicles like trucks (vs race cars, bikes, etc) and the results could be slightly off. ie. Tesla claims 0.34 vs 0.38+ below. The profession said that tunnels that account for taller vehicles maybe off more like 0.01 +/-
h/t: Gurule92

Wind Tunnel results i1Tesla.jpg


b) cD explanations.
cD values are accurate (relative) when comparing scenarios to each other
  • with and without side mirrors
  • with and without tonneau cover
  • etc
oepnh27-jpg.jpg


Per the professional in the video ... a flat-faced object that matched the profile like below would be ~1.0 cD and the Tesla CyberTruck value is 0.34 cD (depth and air flow) uses about 34% of that energy / effort / force to go down the highway.

4mokbgs-jpg.jpg


c)
RELATED to another post of mine in the past:
----------------------------------
Related to the aero, I thought this video was quite interesting and likely has been discussed but seemed to go along with your comments.

The below is about how far the 'sails' are angled in (and I thought was a surprising nugget) but the whole video is good on the front and rear air pressures.

Title: How The Cybertruck Is More Aero Than It Looks
5:37 or 337 secs in.


QAfcJms.jpg


ZErRd8w.jpg

Y3YPorl.jpg


Images create from AirShaper videos
Not exactly the "stick a fork in a 240V socket" I was hoping for but good info nonetheless. 🤔

Tonneau open, tailgate down...my kinda new kewl. 😎
 
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cvalue13

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The ride height cD changes aren’t really that relative, in that:

(1) in street mode, the CT doesn’t stick in those h nights and defaults back to low at speed

(2) in offroad the height sticks to a point, but who’s fretting about eg high speed long distance efficiency in offroad mode


the rearview/tonneau data obviously interesting for different reasons

Would be great/more interesting to do this with options from Tesla
 
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scottf200

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The ride height cD changes aren’t really that relative, in that:
(1) in street mode, the CT doesn’t stick in those h nights and defaults back to low at speed
(2) in offroad the height sticks to a point, but who’s fretting about eg high speed long distance efficiency in offroad mode
the rearview/tonneau data obviously interesting for different reasons
Would be great/more interesting to do this with options from Tesla
There was a whole lot of buzz around here talking about removing side mirrors, how simple it is, what states have that regulation, etc. ...

... turns out in this example given the Cybertrucks shape that it makes very little difference so it does not at all seem worth the trouble. I bet dropping 1 MPH is even better efficiency improvement [though I haven't tried ABRP as an example to see that ;) ].

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) jGhGKy2

Tesla Cybertruck TESLA CyberTruck Wind Tunnel Testing - SHOCKING Results (w/ Cd figures measured) b3UqjEM
Sponsored

 
 




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