Straighten your forks

If you want to straighten your forks you could try this.

http://vimeo.com/2364629

That is insane yet i suddenly really want to do it.

Makes you realise how strong steel is.

I can't believed it, it actually work, driving over the fork and managed to get it not mangle.

Makes you realise how strong steel is.

Yet Gus still managed to mangle his last frame.

Makes you realise how strong steel is.

but do you think it would comprise the strength of the forks?

I'm so happy he can now barspin. All his base are belong to him.

I'd laugh if on his first barspin it just bent back into shape again.

My forks are carbon. I think I'll spare them the car.

Anyway they are quite straight and, having two brakes the cables would get in the way of a bar spin anyway.

Useful to know how it is done though.

hipster

hipster

Thank you, thank you, thank you.

I have lived 51 years and now at last I am called a Hipster.

Can't wait to tell my daughters ;o)

but do you think it would comprise the strength of the forks?

[ame]http://en.wikipedia.org/wiki/Work_hardening[/ame]

Thank you, thank you, thank you.

I have lived 51 years and now at last I am called a Hipster.

Can't wait to tell my daughters ;o)

I don't think he's refering to you.

http://en.wikipedia.org/wiki/Work_hardening

I have read the article and still don't know if the fork has been compromise

It will get stronger due work hardening, but more likely to fracture due to loss of ductility.

Normally the yield stress of steel is below the fracture stress. Once the yield stress is reached, the steel begins to deform plastically (non-recoverable deformation). However, if the yield stress is raised (by work hardening) then the stress necessary for fracture may be reached before yielding.

In other words, steel will normally deform in a ductile manner (as happened when the car drove over the forks) but this means that subsequent ductility is reduced (locally i.e. in the area where the deformation took place) and hence the forks may be more likely to fracture at that point.

I know you can repair steel forks which have been damaged in a crash by bending them back, but I don't know if any subsequent heat treatment ( http://en.wikipedia.org/wiki/Annealing_(metallurgy) ) is necessary. I guess it's a question for a framebuilder rather than an engineer.

That's what I remember from my fracture mechanics class anyway.

Thank you, thank you, thank you.

I have lived 51 years and now at last I am called a Hipster.

Can't wait to tell my daughters ;o)
No, like from first time round - Jack Kerouac, Woody Guthrie etc.

;P

I don't think he's refering to you.

Oh i was, as he's a complete opposite hipster with his carbon forks and 2 brakes.

Sarcasm on the internet doesn't always work :P

Oh i was, as he's a complete opposite hipster with his carbon forks and 2 brakes.

Sarcasm on the internet doesn't always work :P

You've successfully fooled another one, Clive. No-one is ever going to see into your dark hipster heart. That road look works! ;)