Anyone seeing rust on V6 rear subframe?

[DerTheDer]

Pardon my ignorance in all matters welding but could this problem also be present on the I4 with it's aluminum subframe? Not sure if all these issues are specific to the steel process or could be equally replicated with aluminum.

No. Aluminum does not rust, however it can corrode. There are certain things such as acids that can break down and corrode aluminum.

Steel is harder than aluminum and is more of a practical applicant for some things, aluminum also has its value. Steel is 2.5x the weight of aluminum.

Aluminum is welding at a MUCH lower temp of around 1200 vice the steel at around 2500 degrees.

BUT. If its a shitty welder that's just had a few to many pints for lunch, its unavoidable.





Think this type of QC goes on at Lotus? It may but this is for a Bently. I know this isnt welding, but I was admiring Bentlys welding ability earlier and came across this photo.

 

[laupd]

No I'm not, and after re-watching the A New Dawn video where I could get a better look at the rear subframe, I can see why they chose steel. Practically speaking, it was the best choice for them.

Cast alloy aluminum provides some of the "add lightness" that Chapman was famous for. It's why Lotus spent the money to make cast alloy double-wishbones for the suspension, and most likely anything else they could cost-justify. The chassis itself is bonded aluminum. The Evija has an all-carbon fiber chassis from front to back, so that indicates where their minds are at for saving weight, albeit that's a rather expensive option which is partially why the Evija costs so much.

It will be interesting to see what they choose for the Type 135 chassis. Oh, and welcome to the forum!

Thanks for the welcome ! Material choices on any structure are a key part of design. Complete agree about their weight aspirations. Adding ‘Light’ isn’t easy on something with 400bhp to connect to the ground. Let’s all hope their choices were correct and the Emira goes on to be a long term classic car of envy.

 

[Shahaf2911]

Isn’t the subframe the same one (at least mostly) that’s used in the Evora as it used the same engine and suspension geometry (again mostly) which was produced in the same factory ? If so the Evora subframe is supposed to be a good indication

 

[meenboli]

I'll just say that not everyone who works in production is any good - even if they think they are.

It doesn't come across like he left of his own accord now does it?


And any company doing aftermarket mods would surely point this out to a customer.

It's a non issue from a keyboard warrior as far as I'm concerned.

 

[Ftype]

The thread, or me personally? Seems extreme, if the latter. I've been here since the beginning of the forum and my contributions here aren't particularly casual or low-quality.

If you've taken anything I've said personally, that seems like an odd choice. This is a commercial business that we're all customers of, and one that has repeatedly engaged in what appear to be strategic lapses of truthfulness. That makes me wary, and if it doesn't make you wary, that's fine. But it's not a case of me being "inflammatory", it's rather a case of you not liking the implication of my questions because you're socially invested in the brand in local, personal ways that most of us are not.

Porter it looks like you are coming round to my conclusion about Lotus when I cancelled 8 months ago. It was the factory tour and driving the car on track at Hethel that told me all I needed to know.

 

[Ftype]

Welcome to the dark side of Emira forums. Once you hit the tipping point of being a little too critical of the car/manufacturer/design/quality then people treat you differently.

Yes I have experienced that