Mine has been like that for years....so i would say cosmetic

Had similar on old P2 and I never thought of it as anything but cosmetic.

---

On the internet, you can be anything you want. It is a pity so many people choose to be stupid.

Hi sorr,

Cosmetic. The bubbling is the aluminum cable stop corroding. The dent is the end of the cable stop where it's bonded into the frame.


This is the internal cable stop (ICS) in aluminum. We used this design to reduce aero drag (internal cables) while simultaneously reducing cable friction, rattling and weight (no housing inside the frame).

Cheers,

---

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

Thanks for the replies, good to know it is not a structural issue.

However if it is a aluminum cable stop bonded in the frame corroding is that not a bad thing? What can be done to stop it for getting worse? Sand area and repaint?

Hi sorr,

Yes, annoying but not critical, and not covered under warranty.

As you mentioned, stopping aluminum corrosion requires sanding, and also anti-corrosion treatment before touch up painting. An experienced paint shop should be able to do these steps; it's not likely a home repair will be satisfactory. We recommend Hot Tubes. Toby has done some amazing paint work with Cervelos. Warning - it's tempting to go wild with custom paint!

http://www.hottubes.com/Cervelo_Custom_Paint.html

Cheers,

---

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)