30. September 2021

Visible carbon structure on the biker frame

Time and again, we receive inquiries from our customers as to what the visible fiber structure on our frames is all about. Why this is not a production defect and how this structure comes about can be explained quite simply.

All carbon frames of our ROTWILD bikes are manufactured by hand. Only carbon fibers from the world market leader Toray are used. The Mountain bike frame manufacturing process is enormously complex. For example, a frame consists of more than 1,000 individual carbon blanks, which are carefully placed in the appropriate shape for the component in over 60 hours of manual work.

1,046 carbon cuttings have a frame of the ROTWILD R.750 series.

New manufacturing technologies such as the internal pressure process with EPS foams allow lighter constructions without sacrificing strength. While "3K fabric" with its typical woven look used to be used in carbon manufacturing, modern carbon frames like the ROTWILD frames are made of UD material with a much more uniform surface. The use of 3K mats is now only done where frame interfaces are reworked, for example in the head tube area.

Mainly high-quality "UD" material is used. The use of 3K mats is only used where frame interfaces are reworked, as here in the head tube area.

It is a conscious design decision that we do not paint or glue our frames in full color. Rather, the visible carbon structure is for us a quality feature that distinguishes the full carbon frames of all ROTWILD bikes.

Technology and high-quality workmanship consistently made visible: The individual carbon structure is a special quality feature for us, which distinguishes the full carbon frames of all ROTWILD bikes.

Precise craftsmanship, UD material, manufacturing by means of internal pressure process and EPS foaming - the highly complex carbon processing allows the frame construction to be adapted to special requirements. For example, for the Gravity segment and the R.G375 bike.

Learn more about carbon processing in our article: How a modern ROTWILD frame is created and Know-how: not all carbon is the same.