Bike Forums - View Single Post - Carbon Fiber Frame Repair

01-01-24 | 10:47 PM

#3

PaulJensen

Newbie

Joined: Jan 2015

Posts: 56

Likes: 36

From: Blaine, WA USA

Bikes: 1970 Peugeot PX-10 - Ibis Cousin It tandem - Zizzo Liberte folding bike

(above) One of the reasons for the repaint / rebuild was the previous carbon fiber (over aluminum) seatpost was fused in the seat tube.. I needed big pliers and I don’t give a **** attitude to break it free, and fortunately the steel insert, like the one in the picture, didn’t come loose at all… But there were a pair of minor epoxy cracks on both sides of the seatpost clamp… (The photo above is not my bike… I’m using it here for reference)…

(above) … SoI chiseled out any epoxy that wasn’t carbon fiber.. Pretty easy with a small sharp chisel… Then I fortified those side gaps with carbon fiber *yarn* and epoxy… There is a sacrificial layer of fiberglass to smooth out the carbon fills… Once set up a lot of sanding leaves the very small amount of new carbon fiber where it needs to be…

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