Cybertruck Front Casting Analysis (and Frunk Implications) - 3 vs 2 Chickens

[S.H.Peterson]

Posts like this what greatness is made of!
Seriously, this guy could work for any intelligence agency or group.

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[cvalue13]

Three things from what I can see on my phone 1) the man is too big, he looks around 7ft5" 2) he sits slightly further back,

He’s def big - BUT, only there to give orientation to the footwell, which since hems “being further back” balances out for the purpose

That said, male dummies in the crash test are 5’9” and 160lbs, so …

So I expect the frunk to be full size, and flared wider to the front, as the suspension riser is likely the widest wheel component in the wheel well.

I’d also expect the front to be a *bit* flared, but - which is why I flared it in the smaller scenario

if you check the photos of the casting against (A) the stubby nose of the CT, and (B) the small headroom of the hood compared to the casting’s top, the Model Y isn’t a good analogue for the CT. The CT has far less nose, and far less headroom (but is overall larger)

Put differently, the “suspension riser” comprises far more of the available nose

 

[HAL GALLUS]

Three things from what I can see on my phone 1) the man is too big, he looks around 7ft5" 2) he sits slightly further back, 3) the accessories can all go under the dash with access via the frunk, and the radiator etc has to be under the frunk, directly behind the bumper for airflow reasons. So I expect the frunk to be full size, and flared wider to the front, as the suspension riser is likely the widest wheel component in the wheel well.

Yes this man looks to big.

 

[cvalue13]

Yes this man looks to big.

to be honest, the shade of green I used in the background was a little vivid, too

 

[HAL GALLUS]

He’s def big - BUT, only there to give orientation to the footwell, which since hems “being further back” balances out for the purpose

That said, male dummies in the crash test are 5’9” and 160lbs, so …




I’d also expect the front to be a *bit* flared, but - which is why I flared it in the smaller scenario

if you check the photos of the casting against (A) the stubby nose of the CT, and (B) the small headroom of the hood compared to the casting’s top, the Model Y isn’t a good analogue for the CT. The CT has far less nose, and far less headroom (but is overall larger)

Put differently, the “suspension riser” comprises far more of the available nose

Like doctor who's tardis.

 

[cvalue13]

If they knew how hard you were working on this, they'd give you a raise

id have to give myself a raise

conscience can’t bare it

 

[charliemagpie]

I think the Frunk space may be a little wider.

The casting may sit on only half of the rail.

 

[JBee]

He’s def big - BUT, only there to give orientation to the footwell, which since hems “being further back” balances out for the purpose

That said, male dummies in the crash test are 5’9” and 160lbs, so …




I’d also expect the front to be a *bit* flared, but - which is why I flared it in the smaller scenario

if you check the photos of the casting against (A) the stubby nose of the CT, and (B) the small headroom of the hood compared to the casting’s top, the Model Y isn’t a good analogue for the CT. The CT has far less nose, and far less headroom (but is overall larger)

Put differently, the “suspension riser” comprises far more of the available nose

The reason I pointed out that the person is to large is because your firewall position is way to far forwards, the firewall, like on most cars is behind the front wheel arch, in fact because the front headrest is behind the center door pillar, it's possible it's just in front of the door itself. I wouldn't be surprised if the firewall is a part of the cast and loops back somewhere like the yellow line. Also the Brown line need only be around 3.3Ft from the firewall footwell, and the hip placement is near the centre column.

I'm not sure why you say MY has far less nose or headroom. The MY nose might appear longer, but has less than the MY nose volume. Also the high center peak design is disorienting on just how much CT headroom there is. The packaging of the HVAV in the nose, and the motors underneath the frunk allows for it to go under the dash area as well.

 

[flowerlandfilms]

i'll bet i could shop that dude and the box right out of there.

 

[RVAC]

Good stuff, however I don't get why you curved the firewall so much? Looks like it's just about vertical.

I also agree with @JBee that it should be a bit more rearward as it appears, from the above photo, to line up pretty well with the forward edge of the side body stamping:

Just some minor nitpicking, this is the shape of the front quarter panel:

 

[Cybergirl]

What happened to the monocoque exoskeleton architecture?

 

[RVAC]

Forgot to add, in the pilot line photo the bumper cross car beam and actual crush cans are missing. For reference the complete 4680 Model Y front end:

 

[cvalue13]

it's possible it's just in front of the door itself.

mate, you’re getting a bit carried away there, aren’t you?

where’ll you be having the passenger legs go, mate?

the firewall, like on most cars is behind the front wheel arch,

that could totally be true

But perhaps I’ve made a mistake in including the cartoon person, as it seems to be causing more confusion that it was worth

The cartoon person is not being used to determine the location of anything

There are other reasons for having placed the firewall where I did. Several but not all are pointed out explicitly or implicitly in the slides above.

But a few other breadcrumbs not otherwise included in the slides above:

• on the CT’s potentially unusual firewall location / forward lean depicted in my slides:

first, study the slide titled CABIN BULKHEAD estimate” and note that top of the firewall appears almost certainly to at least begin forward of triangle side window aperture - this will turn out to be seemingly true based on the below…

next, study any side-on and overhead photo of the CT and note the relative location of a number of bits and bobs, in particular the leading edge of the dashboard, the forward door seam relative to the forward most bit of the side mirror, the fender flare’s the center of the wheel hub, and the ending of the windshield glass:

Then go study any available photo of the pre-production prototype interior to confirm relative position of those exterior points to the interior points:

Finally, account for the fact that between the firewall proper and the cab there will be an inch or two of trim, mounding, wiring, carpeting, etc.

After all that, go back to my slides:

And then finally go back toto my estimation of the firewall location (and lean):

In short, interior photos (and ergonomics) dictate that the driver footwell lays under most of (if not all of) the triangle window aperture.

the huge dash and windshield visually distorts the physical reality of the way they’ve compressed the nose dimensions of the CT.

My exact location of the firewall could totally be off, that’s why it’s an estimate - but it’s not so off as to wildly change the proportions of anything I’ve done - and it’s location in my slides has nothing to do with the cartoon person

 

[cvalue13]

Forgot to add, in the pilot line photo the bumper cross car beam and actual crush cans are missing. For reference the complete 4680 Model Y front end:

but the CT isn’y designed like that vehivle

just look at the SS overlay photos

the CT nose does not extend materially past the casting

 

[cvalue13]

but the CT isn’y designed like that vehivle

just look at the SS overlay photos

the CT nose does not extend materially past the casting

past this I don’t know what to say for the specially impaired

here’s a very nose-friendly photo of the CT’s compressed front end - this photo taken at a forward angle angle actually amplifies the apparent length of the nose, but for present purposes these three photos combined should show just how little the CT nose will extend past its front casting:

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