Head Tube Layup

After calculating the thermal expansion of UHMW for the temperature delta of the cure process I decided to layup a headtube for Chris King InSet headset press fit ID of 44mm.

You can see the layers below, 10 in total, alternating between 0 deg and 90 deg.


The next two photos show the wrapping process as the carbon sticks to the previous layer and the backer is peeled away. Working in the shop around 50F I had to use a heat gun to increase the tack level of the prepreg in order to get the wraps to stick and conform.


The finished layup ready to shrink tape.