3 ms·
A 2017 article is very out of date. The Model 3 rear subframe is cast aluminum: https://insideevs.com/news/408645/tesla-model-y-mega-casting-teardown-video/ ht
by hwillis 6y ago
A 2017 article is very out of date. The Model 3 rear subframe is cast aluminum: https://insideevs.com/news/408645/tesla-model-y-mega-casting-teardown-video/ https://insideevs.com/news/408645/tesla-model-y-mega-casting...
Which is certainly a safety critical structural element.
Additionally, glues are not stronger than aluminum. I don't know if you're thinking of a composite resin (eg glass fiber), but normal adhesives are weaker even than pure aluminum, which is ~5x weaker than all the commonly used (copper age-hardening) alloys of aluminum.
- Someone1234 6y agoI have no interest in a pointless debate about the semantic difference between the passenger compartment Vs rear crumble zone and what "safety critical" means, no do I over the word "common" in "common vehicle glues." If you're going to read my post with the worst possible interpretation then try to correct that uncharitable reading, I just have no interest in a discussion.
- hwillis 6y agoSo basically you didn't look at the link, because the castings -which, again, are new- are part of the safety cell. They are not the rear extruded rails. If you had specified an adhesive when you first wrote the comment, sorry- I managed to not see it. I don't know of any "steel reinforced epoxy" besides JB weld (which generally should not be used on anything bigger than a lawnmower), but it and actual 3M vehicle adhesives[1] are a full 10x weaker in shear and 15-20x weaker in tension that plain boring 6061. [1]: https://multimedia.3m.com/mws/media/1467016O/07333-irsa-technical-data-sheet.pdf https://multimedia.3m.com/mws/media/1467016O/07333-irsa-tech...
- davidgould 6y agoThe Model 3 rear subframe is not the same as the Model Y which you link too.