How rigid is this chassis?

[venturaII]

Originally Posted by Tokay444

My guess is neither of you have ever measured torsional rigidity before and after a proper cage install, and are talking out of your asses.

To quote you, "show your math". The internet is devoid of any info regarding even just OEM FT86 chassis rigidity numbers, let alone with a cage, so please fill us all in. And please do so in industry standard Nm/deg format. Unless YOU'RE the one talking out your ass.

[Tokay444]

Originally Posted by Tcoat

You have?
A proper cage install in a well engineered, dedicated racecar is a rare thing. We are talking about slapping something into a modified street car. The effect is not going to be the same. To say that "A cage will most DEFINITELY increase rigidity, and likely by a fair margin" is not a catch all nor accurate statement by any means.

A proper cage*

[Tokay444]

Originally Posted by venturaII

To quote you, "show your math". The internet is devoid of any info regarding even just OEM FT86 chassis rigidity numbers, let alone with a cage, so please fill us all in. And please do so in industry standard Nm/deg format. Unless YOU'RE the one talking out your ass.

Yet there are copious amounts for other chassis.
Are you saying that the same type of engineering used to design a proper roll cage for another platform, would not translate to this one?

[venturaII]

Originally Posted by Tokay444

Yet there are copious amounts for other chassis.
Are you saying that the same type of engineering used to design a proper roll cage for another platform, would not translate to this one?

I'm not debating crash safety. I'm saying adding a cage to our cars does not necessarily equate to a change that has a positive effect on performance, and until you can provide numbers not only quantifying the changes made, but also showing a clear improvement in performance as related to those changes alone, your claim is baseless. Or is it really just because racecar?

[Tcoat]

Originally Posted by Tokay444

A proper cage*

Install*

[Tokay444]

Originally Posted by venturaII

I'm not debating crash safety. I'm saying adding a cage to our cars does not necessarily equate to a change that has a positive effect on performance, and until you can provide numbers not only quantifying the changes made, but also showing a clear improvement in performance as related to those changes alone, your claim is baseless. Or is it really just because racecar?

I never said it added performance. I argued it added rigidity.

[venturaII]

Originally Posted by Tokay444

I never said it added performance. I argued it added rigidity.

And your argument was ice sliding off your roof. Not quite the level of research needed to support such a claim.

[Tokay444]

Originally Posted by venturaII

And your argument was ice sliding off your roof. Not quite the level of research needed to support such a claim.

That's just a real world daily driving situation in which I notice it. It wasn't an argument. It was an observation. Not seeing where you're going with this.

[ILLSMOQ]

So sifting though...unless it’s tied to many points throughout the car/cage (like Zeros example) and actually tied to the subframes, a simple 6 or 8 point cage probably isn’t going to add enough support/rigidity to be worth the trouble.

Do we all agree on that?

[venturaII]

Originally Posted by ILLSMOQ

So sifting though...unless it’s tied to many points throughout the car/cage (like Zeros example) and actually tied to the subframes, a simple 6 or 8 point cage probably isn’t going to add enough support/rigidity to be worth the trouble.

Do we all agree on that?

I think a better question would be: why do you feel like rigidity needs to be added, and how can you be sure a cage is adding it in areas of any use? I understand you're making more power, etc, but the bottom line is that if the power hasn't cause the chassis to flex any more than it was before, why go to the bother?

[strat61caster]

Originally Posted by venturaII

And please do so in industry standard Nm/deg format. Unless YOU'RE the one talking out your ass.

Nobody gives a shit about unit choice, give it to me in stone*fathom/minute and I'll punch it into google and give you mg*in/rad AND Nm/deg in under two minutes.

Quote an SAE testing standard or gtfo.

[chaoskaze]

OK GUYS

[venturaII]

Originally Posted by strat61caster

Nobody gives a shit about unit choice, give it to me in stone*fathom/minute and I'll punch it into google and give you mg*in/rad AND Nm/deg in under two minutes.

Quote an SAE testing standard or gtfo.

My point was more to be sure to use a recognized measurement standard than the actual units used. "My car feels stiffer" isn't acceptable.

[Tcoat]

Originally Posted by ILLSMOQ

So sifting though...unless it’s tied to many points throughout the car/cage (like Zeros example) and actually tied to the subframes, a simple 6 or 8 point cage probably isn’t going to add enough support/rigidity to be worth the trouble.

Do we all agree on that?

Get a far better bang for the buck with a proper stiffening kit. With a kit your are getting stiffening where the car needs it not at some random points throughout the car.