CF doors by Carbon Microsystem

[Carbon Microsystem]

We make the moulds from high-quality shrink-resistant resin and they have special inserts for aligning the two sides of the doors. Therefore, when we glue carbon doors, we can guarantee that the doors will have the same geometry as the original door.
We also scan some parts, but this is more for modeling and not for control.

[George Hill]

Depending on price I would be interested in touring doors or even a hatch.

[bmw m3 s50]

I think the crash bars will be useless on these doors. On any impact, carbon fiber generally will shatter not deform like metal. I am just thinking if there is an impact along the side of the car, I would think the carbon fiber would shatter at the crash bar mounting point from the force causing the crash bars not to anchor like it is supposed to do making them useless.

It seems the only way to get true protection from side impact when using these carbon fiber doors is a having a full roll cage.

[usdmej]

I would think the carbon fiber would shatter at the crash bar mounting point from the force causing the crash bars not to anchor like it is supposed to do making them useless.

The crash bar is threaded, and the anchor bolts directly to the bar, not the door. the door itself only contributes a mounting hole that orientates the bar.

considering when the door is closed that the anchor point is only millimeters away from the grab point of the chassis, imo I don't think the door skin is contributing anything meaningful structurally in an accident


Fwiw I sold my doors to a guy with a dedicated track car, he bought them because he was told that you can strip a door to kingdom come as long as you keep the crash bar. As soon as you stop using it is when they make you run door bars/roll cage.

[bigjae46]

I think the crash bars will be useless on these doors. On any impact, carbon fiber generally will shatter not deform like metal. I am just thinking if there is an impact along the side of the car, I would think the carbon fiber would shatter at the crash bar mounting point from the force causing the crash bars not to anchor like it is supposed to do making them useless.

It seems the only way to get true protection from side impact when using these carbon fiber doors is a having a full roll cage.

It depends. The yield strength on the carbon can be significantly higher than steel and aluminum. Layup of the carbon and different cloths can double the strength. I'd guess that the door panel would contain a lot of the debris. No real way of knowing without testing or a lot of engineering.

That said, I personally would only install carbon doors on a caged track car where I wear a helmet with the visor down.