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      10-14-2020, 05:29 AM   #63
Igor_M5
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Quote:
Originally Posted by AUSf22 View Post
Quote:
Originally Posted by e92ben View Post
There ZERO chances it's part of the chassis. It's literally glued on like every other carbon roof Bmw has made.
I'm afraid your guess or assumption does not equate to it being true.

The roof is an integral part of the M2CS and is not like "every other" carbon roof.. as we have mentioned to you throughout the thread a few times...
Quote:
Originally Posted by Davil View Post
Quote:
Originally Posted by e92ben View Post
There is ZERO chances it's part of the chassis. It's literally glued on like every other carbon roof Bmw has made.
https://www.bmwblog.com/2020/06/21/b...nical-details/

"For the M2 CS, the Germans developed their own unique roof, which is a structural part of the bodywork! This is different from the way aftermarket solutions are available in the market, or even the M Performance solution"

Lots of info on this.
Quote:
Originally Posted by Artemis View Post
Quote:
Originally Posted by e92ben View Post
There ZERO chances it's part of the chassis. It's literally glued on like every other carbon roof Bmw has made.
As noted in the first post of this thread, the BMW M2 CS features a new type of CFRP roof:
"The new roof, with its sandwich design, makes the body more rigid and appears to have been cut from the same mould as the rest of the car; no trim strips are needed, meaning no visible join[t]s either. This has the additional effect of enhancing acoustics, both inside and outside the car. And dispensing with the customary roof bows and insulation also saves weight. Together with the lighter bonnet, this serves to lower the vehicle's centre of gravity, resulting in even better driving dynamics."
(source: BMW press materials - see here)
Furthermore, the M2 CS roof features no roof rack anchorage points (roof drip rail with flaps).
Quote:
Originally Posted by hansomatic View Post
Quote:
Originally Posted by Igor_M5 View Post
BMW CF roofs have always been (up until the M2CS) plain weave 1x1, all the M "performance" bits have always been 2x2 twill weave, something that bothered me so much ever since the E9x gens when owners fitted non matching CF mirror caps, even tho it was a BMW option.
The M2CS does have plain weave CF on roof. Its just on the bottom side of the sandwich so you can't see it.
So. Much. Misinformation in this thread, it's unbelievable.

M2CS roof has plain weave on top and bottom, using two different types of weaving structures. Top is a UI tape (unidirectional fibers measured in the thousands) laid in a plain twill weave, bottom appears to be a 3K UI (much finer, denser form, being substituted for the cross reinforcement braces)

M2CS roof is as much part of the chassis as a prosthetic limb is to our bodies.
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