Dented Aluminium frame - ?

[Yellow Saddle]

FTFY

What is FTFY?

Indeed. Or better still, perhaps he could explain how damaging a tube designed for maximum strength for a given weight doesn't weaken it, or why the CAA don't allow dents on structural tubes.

Oh dear. He is onto his flying orbital structures again.

 

[midlife]

FTFY = fixed that for you

Shaun

 

[Yellow Saddle]

Ever done that thing where you stand on a beer-can and it takes your weight, then put a small dent in it and it doesn't?

Yes I have. It is a demonstration of how a compressive force and an opposing introduced Euler's buckle can compress a cylinder.
The real trick is to attempt to demonstrate how that translates to a bicycle's top tube. I'll give you a clue. Only one tube on a bicycle is ever subject to a significant compressive force. Can you name it?

 

[midlife]

Seat stay ?

 

[jonny jeez]

Yes I have. It is a demonstration of how a compressive force and an opposing introduced Euler's buckle can compress a cylinder.
The real trick is to attempt to demonstrate how that translates to a bicycle's top tube. I'll give you a clue. Only one tube on a bicycle is ever subject to a significant compressive force. Can you name it?

Nigel?

I'm great at naming stuff.

 

[mickle]

At various times in their history Cannondale have had periods where their frame warranty claims were running at 33% of their bike sales. Known as Crack n fail in.the trade - the name is well earned. I wouldn't buy a used Cannondale.