Colnago C50 Repair Failure 

Maven will be uploading one next.

@@jasond3918 mad lad mavey.

Exactly! 😃 Where ya been Raul?

Been busy after having to move workshop.

@@LuescherTeknik hope you are well

That's the problem with dodgy repairs, they are judged by the paint finish not the structural performance.

No, actually they knew what they were doing. It was a deliberate job at restoring funcionality to a limited extend. And it seemingly held long enough to outlast any warranties given.

Not really, it failed at the poor bond prep, as shown by the rust at the interface.

@@LuescherTeknik hasn't it started with cracked dropout? While debonding occured only at disassembly

No, the crack was at the dropout to steel tube bond DUE to the poor bond.

@@LuescherTeknik so the crack wasn't even in the main body of the dropout? Well that changes everything!

Actually, steel is real!

Some people are luddites and really attached to the frames they already have. There's also an elegance to repairing something, whether that's most resource efficient or not

CF is fine when it is used by competent engineers. Not marketing departments who want to make complex shapes while using as little material as possible to save weight.

Someone "repaired" a seat tube crack with an aluminium tube, until it corroded from the inside and swelled up causing more cracks and a hole in the frame!

I just ran a magnet over the rest of the frame!

It's beyond #raoulsyellowpencil

No, the bond at the dropout has failed and the dropout was loose as shown, it was rusty and I could just pull it out.

You can still get a Colnago Master X Light frameset, including the old Mapei colourway in lugged steel, might have been cheaper……

@@kevinriseborough1521 Thanks, brings back memories of when I began racing in the early '70's. On the start line on my lowly Peugeot PX-10 totally intimidated by guys on beautiful Colnago's, Masi's, DeRosa's, etc, figured I had zero chance. Wondered why they were nowhere to be seen in the bunch as we sprinted to the finish line (Novice races were too short for breakaways even if we had known how to break away). An epiphany when I finally figured out after 4-5 races "it's not about the bike". Armstrong was right about that part at least. Eventually upgraded to a Schwinn Paramount, fairly plain so I didn't get the idea that my bike was so beautiful I didn't have to pedal.