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

[RVAC]

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:

I appreciate the inquiry and discussion

and I may or may not have undersized it

but look at your drawing, then see again the three photos I just responded to our discussion with

your drawing is far off

Well I did say that compared to the Model Y the crush cans and cross car beam won't be extending as far forward from the casting. Dimensionally speaking it was just a quick free hand drawing to illustrate the idea the front quarter panel may be slightly undersized.

What you're seeing here, painted in green, likely are the crush cans that attach to and are directly in line with the casting rails.

As for the firewall if you look at the 4680 Model Y front end it is right about where the casting meets the body side front edge.

I think perspective might be skewing perception a bit. From that interior shot it doesn't seem like the pedals are that much further forward than the A-pillar support.

Seems fairly consistent with what I estimated earlier, although I will concede it might just be slightly further forward (see yellow line).

By the way I still don't get the rationale for the firewall slanting that far forward. Judging from this photo it's quite vertical:

Anyway the above is just to discuss and not to detract from the fundamental point of the thread, which I agree with, the frunk won't span the full width nor will it go super deep past the windshield.

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[Deleted member 17810]

I feel very uncomfortable about this head being tilted back.

 

[MonkeyDeLuffy]

I feel very uncomfortable about this head being tilted back.

That is not ahead that is OP analyzing if there would be any water leak from the roof. I am still waiting for the result, BTW.

 

[ldjessee]

Many frunks are two sections or stepped, meaning the upper portion seems to be larger than the lower portion, some cars even include a shelf/platform that separates the upper and lower portions.

Also, the stuff does not have to be between the frunk and the firewall, there seems to be space OVER the rails or even outside the rails to mount filler ports, HVAC, etc.

And, it may be that the frunk is smaller now, but a future redesign where they learn to combine or somehow get parts to do more than one job, the space and weight will be more efficient..

 

[JBee]

meant to add:

all this is also true in my F150

With the F150 front seats pushed all the way back to full rearward, my tiptoes (6’2”) can barely get to the foremost floorboard. But the pedals are a good 6-8” forward of that.

This passenger seat appears to be in the full rearward (which I assume they did to make the legroom appear as large as possible, and with the rear seat behind it flipped up)

meanwhile my wife (5’4”) drives with the seat in nearly full forward position to comfortably reach the steering wheel

Maybe. Not to brag, but spacial mental pictures are normally my forte though in real life, often to the boys surprise I can estimate a distance for small things within a few mm... but 2D photos without references are harder. CT is an odd egg with all it's flat curves triangular shape nonsense.

In my eye if you simply follow the front door seam down in that photo in your post, (just above the front end of the center console) it looks like the brake pedal is maybe only 1-2" in front of the door. That would make the start of the firewall about the same at floor level, or a little bit forward, but from there it would rake forwards at brake pedal level to about 4-6" back from the front door edge.

If you look at the left image below, the firewall seams to be attached to the front of the door frame and nearly vertical, and not that far forwards and nearly at the suspension riser as you red dotted line depicts. Probably starting somewhere where the white cabin frame ends.

I know you don't particularly like putting and weight on the human ergonomics component, but another point of reference is to imagine that the dashboard is at the distance of your knee. That together with the angle of your lower leg means that the footrest is somewhere in the vicinity of the green line, not the red one, unless you are wearing stilts. It might be up to half way to the red line, but not more, which is about half way into the small triangular side window.

Internally I really don't think the front wheel intrudes much, if at all past the firewall into the cabin space as is often with mini type cars.

The only real consequence of where the firewall is, from a consumer standpoint, is how it impacts the frunk size and placement and where the other service access bits are etc. Similar to your frunk size, I think the green parts would be best for service access (coolant/wiper fluid etc), the Yellow line being the wheel wells, and the blue box remaining mostly clear for a front trunk. This trunk box is around 475l, so comparable to the Lightning, which is what I am expecting.

There is enough volume behind the frunk and between the yellow line for other things like steering rack , brake cylinders, HVAC, compressor etc. The only question I have is how much of an angle the front radiator will be on, given that we now know the front grill will lift, meaning that the floor of the frunk should be flat at that point. I am also wondering how they will keep the frunk waterproof for amphibious mode, possibly using inflatable seals, as they might also on the doors, to keep the water out. (there is actually a connector dangling under the orange box that looks suspiciuosly like a airline connector)

I also wonder if there will be any under dash storage as per the orange box.

 

[JBee]

Well I did say that compared to the Model Y the crush cans and cross car beam won't be extending as far forward from the casting. Dimensionally speaking it was just a quick free hand drawing to illustrate the idea the front quarter panel may be slightly undersized.

What you're seeing here, painted in green, likely are the crush cans that attach to and are directly in line with the casting rails.

As for the firewall if you look at the 4680 Model Y front end it is right about where the casting meets the body side front edge.

I think perspective might be skewing perception a bit. From that interior shot it doesn't seem like the pedals are that much further forward than the A-pillar support.

Seems fairly consistent with what I estimated earlier, although I will concede it might just be slightly further forward (see yellow line).

By the way I still don't get the rationale for the firewall slanting that far forward. Judging from this photo it's quite vertical:

Anyway the above is just to discuss and not to detract from the fundamental point of the thread, which I agree with, the frunk won't span the full width nor will it go super deep past the windshield.

Sorry RVAC I somehow missed your post where you state the same regarding the firewall location. I agree.

 

[intimidator]

Get ready for that frunk to be smaller than expected.

I drive a Ford Lightning while I wait for my Cybertruck. Love love the Lightning frunk. Hope the CT frunk is not too small, either way it will be better than the Rivian approach.

 

[cvalue13]

By the way I still don't get the rationale for the firewall slanting that far forward. Judging from this photo it's quite vertical:

good question - in short:

On one hand, in that photo is appears to start ahead of the triangle window

On the other hand, it surely has to connect to the lower body

which means that:

There is enough volume behind the frunk and between the yellow line for other things like steering rack , brake cylinders, HVAC, compressor etc.

Notice that @JBee ’s yellow drawn firewall above ends effectively where mine does, at the cartoon dude’s feet

But I see a problem(s) with where @JBee’s begins under the dash:

the CT windshield design creates a no man’s land underneath it. that space between @JBee ’s frunk and his firewall would be a total b*tch to access from the front of the vehicle for servicing anything ’behind’ the Frunk. It would be better accessed if at all from inside the cabin, by the dashboard lifting

so, combining the noman’s land that would be created by eg @jbee’s drawing, combined with the frame photo showing the firewall to appear to begin in front of the triangle window, the leaning firewall was collectively my best estimate

Totally wouldn’t die on that hill

but also if forced to choose I would pick mine over @JBee ’s line, which doesnt square with the frame photo, and also creates a no man’s land in under mid-dash area.

 

[cvalue13]

What you're seeing here, painted in green, likely are the crush cans that attach to and are directly in line with the casting rails.

I’m confused by the import of this?

Especially given:

Dimensionally speaking it was just a quick free hand drawing to illustrate the idea the front quarter panel may be slightly undersized.

I guess that means you somehow disagree with my overlay transparency photos?

because my drawn line quarterpanel’s are taken straight from the overlay transparencies. I didn’t exactly freehand them

 

[cvalue13]

By the way I still don't get the rationale for the firewall slanting that far forward. Judging from this photo it's quite vertical:

thought this was worth a double-click

see the photo above in your quote, then:

in blue is the triangle window

in red is the location of the casting hanger mount

in green are the door hinges

yellow appears to me to be the forward slanting outermost edge of the firewall

again I wouldn’t die on this hill, and it’s still unclear to me how this would all flange with and permit of the intruding wheel well of the casting. But I’m taking a wild guess that this firewall seen in that frame photo has still not yet been trimmed up of portions of the firewall that get snipped out prior to attaching the casting?

but on the other hand, focus again on the above red location of the main casting hanger

the previously leaked frame photo did not yet have attached or trimmed all its relevant bits and bobs up at and under the windshield, as evidenced by comparing to the picture immediately above

 

[Rutrow]

The only question I have is; Can I fit my golf clubs in there? Need about 52" of length even if it's diagonal.

They'll fit.

 

[cvalue13]

Many frunks are two sections or stepped, meaning the upper portion seems to be larger than the lower portion, some cars even include a shelf/platform that separates the upper and lower portions.

many are, yes - in vehicles with more traditional hood line silhouettes


but this CT dares you find a place to fit any such thing

 

[cvalue13]

If he’s right on width, no. If he’s close, no.
this appears to be similar to the hummer wide but 3/4 as deep

the Lightning marketing made a big deal of this, and the plastic mounding of the Frunk even has a golfbag icon embossed

I don’t golf, but can only pass on anecdotally from the Lightning forums that it seems whether a Lightning fits a golf bag depends on one’s choice of bag and clubs

and the discussion makes me think it’s time for the next chapter in this Frunk inference thread….

 

[Deleted member 17810]

Spoiler: ,

 

[Tinker71]

I am sold. The frunk won't be as big as some might have hoped. Aero dynamics, 12"" of wheel travel - somethings got to give.

While I love all storage I will miss the sail storage the most. I could live with just a small amount of storage in the sails for some tie down straps and little things that tent to roll around the bed.

I am still hoping for some open cubbies on the inside for these type of things. The floor storage often gets stuff put on top so it is not always available.

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