asploded bike parts thread

Fuckin motors, kids, don’t do it.

not even once

Another FSA Gossamer crank dies of what I presume is a common failure…

I really don’t want to think about the kind of straddle injury that accompanied that failure.

After getting nearly two years out of my first Felt frame, discovered this while cleaning the current 1yr old frame I got as a replacement


Uhg.

Zip tie + epoxy

metal failure vs. weird porn image confusion

[quote=b-roll]Another FSA Gossamer crank dies of what I presume is a common failure…

[/quote]

Did the preload cap fall out at any time? I’ve seen a lot of these fail, but basically any time that cap falls out it fails in a very short time.

The preload bolt had been backing out a lot before this happened. I tried to keep it tight but wasn’t super vigilant because I thought that the clinch bolts would keep everything where it should be.

After occasionally re-tightening everything I noticed that it kept feeling sloppy.

I accept that my lack of attention to keeping everything torqued just right probably resulted in the failure.

Still, kind of a high maintenance design?

Absolutely design failure. So about par for the course for gossamers.

And mega exo, too. Shitty shit gonna shit.

I’ve got a set of gossamers that won’t die. I’d really like them to though so I have an excuse to get something not dumb.

By no means am I faulting you, the owner, for not checking and rechecking your preload cap. I’m just saying that, once that cap falls out and the crank gets ridden on, it’s over. It’s essentially a copy of the Shimano design, but unlike Shimano, the preload cap is load bearing. It also has an absurdly low torque setting - like .5-1nm; something no one can actually measure, so it’s almost always going to be too tight or too loose.

The design is terrible and FSA should have recalled it. An enterprising lawyer could probably sue the crap out of them for selling a faulty design.

Hot glue or epoxy?

Epoxy, apparently. Found it on IG though - not mine.

[quote=Wintage Townie]By no means am I faulting you, the owner, for not checking and rechecking your preload cap. I’m just saying that, once that cap falls out and the crank gets ridden on, it’s over. It’s essentially a copy of the Shimano design, but unlike Shimano, the preload cap is load bearing. It also has an absurdly low torque setting - like .5-1nm; something no one can actually measure, so it’s almost always going to be too tight or too loose.

The design is terrible and FSA should have recalled it. An enterprising lawyer could probably sue the crap out of them for selling a faulty design.[/quote]

I’m on my 4th preload bolt. I’ve put several hundred miles on them between preload bolts. Why won’t mine 'splode?

I’ve got another Gossamer on my SS CX bike, but it gets so few miles I’m not all that worried.
I rode the hell out of the 'sploded one for like 5 years, so I think I came out even. 105 crankset ebayed and on the way.

Just noticed this on my carbon fiber mtb. I am assuming it happened after a big wreck I had a couple weeks ago. Am I going to die? Should I contact Felt to see about a replacement frame?

You’re not going to die, but you shouldn’t ride it anymore. Felt will almost certainly do a crash replacement, or you can send it off to a carbon repair place and they can fix it.