Subassembilies likely on the upper floors and feed to the line on the ground floor.
I definitely agree on this, and the general flow of components west to east in GA.
To be clear we are speculating and could be wrong, I'll make this my last post, as I probably crossed over too much speculation 5 posts ago.
If we think back to the tents, they are a horseshoe shape with loading docks on both sides.
At Austin my hunch is they have unrolled the horseshoe to make a single straight-line GA process that flows north to south.
What this means is they can have parallel identical GA lines and parts flowing west to east are used by identical GA stations at each point of the north - south flow.
Considering what I now think might be the big picture, I would have Cybertruck GA lines also running parallel with Model Y lines, my logic here is there may be some common parts used by both. and it is an easier layout to understand.
From my current best guess at the "big picture" if the Cybertruck body is built in the south west corner , it journeys north to get it battery pack and motors, from around the same location as Model Y, then enters GA where Model Y enters after paint. (North)
A reasonable question is did the Austin plans change?
Remember when they were digging the big pit they paused for a while, then the dug it out more.
At the time I thought - Are they adding more stamping?
Because if they got it wrong and dug the wrong size hole initially, it could only be because they reconsidered the logistics.
It is possible Model Y GA was moved from East to West when they decided to expand stamping, (assuming they did).
The obvious question is - Why?
Both Berlin and Austin have at least 8 casting machines there are 2 possibilities:-
- 2 castings per car, 3,000-4,000 cars per day.
- 4 castings per car - 1,500-2,000 cars per day.
I think 2 castings per car is the likely best use of casting.
I think Berlin may have more casting than it actually needs for Model Y, they will build a separate Model 3 process as phase 2, and most probably transport the castings within the factory.
My impression is Austin is bigger than Berlin, that may translate to a longer line, broken down into more individual steps, and a faster rate on the slowest non-duplicated step - Say Berlin 1 Min, Austin 20-30 seconds.
So while it is just speculation, if there were factory design changes at Austin, it may be an attempt to lift daily peak production.
This kind of flow uses more land, and perhaps slightly more equipment, but the higher rate of production may make it worthwhile.