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C7 structural rigidity

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Old Nov 27, 2020 | 04:27 PM
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Default C7 structural rigidity

I was quite impressed with my c7z today. I had to pass some speed bumps in the grocery store parking lot. The z's chassis was unbelievably tight. It didn't rattle and clank around like my suv or my bmw 5 series or bmw 3 series retractable hardtop. The bmw 3 series is the absolute worst even worse then my c4zr1. My c6z did pretty good. But not near as good as the c7z considering it has the removable targa and the c6z was fixed roof.

hopefully I didn't bend a wheel driving over the speed bump.

Last edited by Mr. Gizmo; Nov 27, 2020 at 04:31 PM.
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Old Nov 27, 2020 | 07:51 PM
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Great chassis. Much stiffer then years past.
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Old Nov 27, 2020 | 08:06 PM
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I agree. My C7 is almost as good as my Bugatti Veyron. However, my Aventador is much better. My Wife's Cayenne - meh. My hunting / fishing / slumming ride - a 557 HP Range Rover isn't too bad either.
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Old Nov 27, 2020 | 10:57 PM
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Originally Posted by need-for-speed
I agree. My C7 is almost as good as my Bugatti Veyron. However, my Aventador is much better. My Wife's Cayenne - meh. My hunting / f
Iishing / slumming ride - a 557 HP Range Rover isn't too bad either.
Well, at least he's no longer complaining, full time, about "Miss Piggy".
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Old Nov 28, 2020 | 05:00 AM
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Would passing bumps in comfort show the chassis stiffness, though? I'd think it rather shows the amazing absorption features of magna ride in soft mode?
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Old Nov 28, 2020 | 05:18 PM
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I’ve god a wide sloped apron on the drive out of our store. If you go out at a 45 degree angle it will take enough load off the rear tire to spin it under light acceleration onto the street. It’s not bad.
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Old Nov 28, 2020 | 06:59 PM
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Originally Posted by HighBeta
Well, at least he's no longer complaining, full time, about "Miss Piggy".

true dat !!
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Old Nov 28, 2020 | 07:05 PM
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Originally Posted by X25
Would passing bumps in comfort show the chassis stiffness, though? I'd think it rather shows the amazing absorption features of magna ride in soft mode?
The theory is that the more “flimsy” the chassis, the stiffer they have to make the springs/ damping to compensate.
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Old Nov 28, 2020 | 07:22 PM
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I remember that we used to lift cars from one jack point, and the rest of the car would rather want to still stay on the ground, and I even remembering older cars would need doors be opened first, just in case we would damage them during such lifting, but I think those days are long gone, due to safety standards, computer aided design, etc.

Anyway, I'd personally think it'd still not be due to high rigidity, but I'm not a mechanical engineer. Consider trucks/SUVs with the optional dual sport (offroad) suspension packages. The higher stroke / extra shock fluid reservoir they use on these upgrades completely transform the handling of these cars, and they often ride so much more comfortable, even if they're running at same height, and not any different besides the upgraded shocks.
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Old Nov 30, 2020 | 04:22 PM
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I think you're mostly experiencing how good the stock suspension is tuned to the chassis. I agree that in touring mode, the compression damping is real nice for bad roads. It's still not quite as stiff as the alpha chassis or an M3/M4 but it's pretty nice.

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Old Dec 1, 2020 | 06:11 PM
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Originally Posted by HighBeta
Well, at least he's no longer complaining, full time, about "Miss Piggy".
lol!
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Old Dec 2, 2020 | 02:46 PM
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Originally Posted by X25
I remember that we used to lift cars from one jack point, and the rest of the car would rather want to still stay on the ground, and I even remembering older cars would need doors be opened first, just in case we would damage them during such lifting, but I think those days are long gone, due to safety standards, computer aided design, etc.

Anyway, I'd personally think it'd still not be due to high rigidity, but I'm not a mechanical engineer. Consider trucks/SUVs with the optional dual sport (offroad) suspension packages. The higher stroke / extra shock fluid reservoir they use on these upgrades completely transform the handling of these cars, and they often ride so much more comfortable, even if they're running at same height, and not any different besides the upgraded shocks.
One point jacking like from a bumper jack on an older car with the doors open would bend the frame/unibody. You had to make sure the doors were closed, not open.
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Old Dec 2, 2020 | 02:57 PM
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Originally Posted by tertiumquid
One point jacking like from a bumper jack on an older car with the doors open would bend the frame/unibody. You had to make sure the doors were closed, not open.
To this day, many Discount Tire shops open the doors on Corvettes before jacking, since they used to cause binding and body damage by the doors and hinges when they jacked the cars a bit to change tires. True story : )

Anyway, I'm glad manufacturers now know better.
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