Fully carbon?

[Dis86]

@SDK^ moved it over here.

All the areas I was referring to have always had metallic reinforcement. I've had a Google about and all the images I've found still show it to various extents. Obviously aware that seat posts, rims, spokes etc. Are all available in carbon but reinforcement points are always, in my experience, metallic.
If you can get images next time you strip yours down I'd love to see them.

As for the reason - fatigue. Hence areas with heavy cyclic stresses such as bearings will require metallic reinforcement.

 

[Jonny ///M]

Most modern frames are fully carbon including dropouts and headset bearing seats.

Carbon BB areas are known to cause creaks as the metal bearing wears out the carbon surface and the tolerances are too weak.

A more modern way is carbon frame with a delrin sleeve that then holds the bearings so not to wear the frame out so much.t

I need to read the other thread to work out what you guys are actually arguing over to be honest...

 

[Dis86]

So basically as I stated they aren't fully carbon and certain areas are metallic or seemingly polymer!

I've just watched a youtube vid on the manufacturing process which seems to confirm this too.

 

[Jonny ///M]

Ok

 

[Berger]

Potato.

There are several excellent cycling tips podcasts on carbon fibre wheels and how they are made which I think will explain a lot to you.

Hint: they aren’t 100% carbon as that would be a black pile of dust on the ground