This is not entirely true. Depending on the orientatoin of the plies and the # of plies. The roof probably will not crack from stresses. If this was the case, all aircraft parts (including flight controls and fuselage sections) by your theory would crack as they are subjected to much higher stresses than a car. Look at carbon fiber driveshafts as well. Think of the torsional stress they are subjected to.

 

^^^

That is an interesting interpretation, however, AMS is using them on their Time Attack cars as well as their drag cars. Cabon fiber is extremely strong depending on the backing. The bonding materials are damn near bulletproof, so I don't believe there will be any cracking going on.

Paul

 

Im not saying it will happen right away even if it was the strongest product out at one point it will have to give it might last a few weeks or a few years but it will happen sooner or later. If it doesnt then the carbon was sent out for cryo process which would make the carbon 300 times stronger if they did something like that then i would would say its a great product.

 

i couldent live with out my sunroof so its worth it to me

 

Don't mean to call B.S., but I can find no reference to cryogenic treatment of carbon fiber composites in the automotive or aerospace industry. I only did a quick search, so if I missed it - please show us where you found that cryo treated carbon fiber composite is "300" times stronger than non-cryogenically treated CFC.

Carbon fiber, when made properly is a VERY flexible and resilient material. Think of carbon fiber fishing poles - they can bend ALOT and support huge stresses almost indefinitely. Also, there is some car - can't remember which one, that has transverse CF leaf springs.

I don't forsee anyone having any problems with the AMS CF roof. If they can run 9's and with Time Attacks with it on their cars with no problems, then I think us mere mortals don't need to worry.

EVOlutionary

 

You sure about that, Chief?


Also, do you even have a vague understanding of what the cryo process is all about? You're really suggesting that a cryogenically treated carbon fiber roof will be stronger ? You don't have to be an expert in metallurgy to know how silly that idea is. But go ahead and prove me wrong. While you're at it, get your brakepads cryo treated so they operate at cooler temperatures too. That sounds about right.

AMS has already stated that they will charge between $500-700 to install their CF roof.

 

^ You obviously have only had expirence with fiberglass backed, poorly constructed carbon products, when done right it is costly but carbon is much stronger and more resilient than steel or Al. hence why it is used in airplane applications. I'm not sure if the ams roof is dry carbon (injected resin into composite as opposed to resin applied to composite material) but the ams cf roof panel has been designed and tested to be on the evo under racing situations. It is not just cf laid on fiberglass as alot of hoods and such of the evo are... it is made of carbon/kevlar backing which is what bulletproof vests are constructed of. VERY strong material.

 

Cryogenically treated carbon fiber? WTF!? What will they cryo next, Krispy Kreme donuts ?

 

I believe the AMS roof is carbon/kevlar. Strong stuff.

 

I'm looking forward to seeing what the sunroof weighed on my 03. my sponsor took it out and rivited a piece of aluminum over the hole. I doubt 60 pounds, probably more like 45...but that much weight off of the roof can only help....

 

Where do you get this stuff from????

We have this roof on BOTH of our time attack cars and our drag car. This is a CARBON/KEVLAR piece with a foam core. We are not talking about some show piece here. this was built for strength. It WILL NOT crack under a hard launch and chassis flex. Speed world challenge, LeMans and F1 are using the same type of composites and are pulling more G's then we do and they are not cracking.....why would this??????

Julio you really need to stop with these supposed facts you pull out of nowhere. You have NOTHING to back up the above statement so it simply shouldn't be said. All you are doing is feeding people looking for information the WRONG information.

For those that question the roofs integrity and rigidity I invite you to come to the shop and take a look for yourself. Why would we spend the money to make a mold to put on our car if we were not confident that it would work?!?!

Eric

 

Anyone with an Aluminum roof wish you had a sunroof?? Look here:

https://www.evolutionm.net/forums/sh...90#post4036690

 

consider this a warning. if you're going to throw out an opinion, label it as such. If you're claiming this as a fact be prepared to support that with data. Carbon fiber, and carbon kevlar honeycomb panels are extremely strong and durable. We use them every day as primary structural components for military fighter aircraft that can withstand a 9g turn and more than Mach 2. the long term durability of the composites is a direct function of the resin system that is used in it's fabrication. Cryo treatment of structural composites is still in it's infancy and be really interested to know where you're getting your ideas from. Don't reply though b/c it has nothing to do with this thread...

 

2006-BMW-M6-Carbon-Fiber-Roof-

looks like someone got it to work

 

^ thats sweet