Dahon Catasthofic Frame Failure - dahon Roo
 

Hey,

I wanna share a accident whose happen after a cathastrophic frame failure of dahon roo D7.
Riding on Sao Paulo on a major avenue the frame silpy snaps in half, leading the rider to hit hard on floor with some burns and minor injuries.


https://cimg1.ibsrv.net/gimg/bikefor...fee81fbb04.jpg
Dahon roo d7 snnaped in half
https://cimg0.ibsrv.net/gimg/bikefor...d89fd0cc16.jpg
The closeup on failure point shows zero to none weld penetration on critical hinge point.

That's what aluminum does after having received enough fatigue. One more reason why I choose chromoly instead, at least when it comes to frames/forks.

Chromoly: always been good to me.

"DAHON is instrumental in the fight against counterfeit products. Every authentic DAHON bicycle comes with a serialized 3D holographic label that can be validated on DAHON's online authentication system at www.dahon.com."

The vast majority of bikes sold in bike shops in the last 30 years have been built with aluminum frames. Warranty claim rates have been quite low, which is why the major manufacturers have continued to rely on aluminum for frames.

As hinted above, the Dahon pictured above may be a counterfeit.

It looks like a lousy weld, it didn't even penetrate the main tube's material. Don't blame aluminum for shoddy workmanship.

Not countefeit bike.

Provided it's a real Dahon, based on the sticker and the total change in frame with the bike currently sold under that name, it looks pretty old.

Hopefully the rider is safe!

Thanks,
Yan