Re: spoke fatigue troll

On 2008-04-26, jim beam <spamvortex@xxxxxxxxxxxxxxx> wrote:
Ben C wrote:
[...]
But Brandt _does_ appear to claim that residual stress causes spoke
failure and that stabilization works by stress-relieving. That's a step
too far for me.

the thing for me is that it's not like he couldn't go out and acquire
evidence if he really believed it to be true.

Agreed. If it were anyone else they would say, "I know maybe residual
stress is a factor", and people would say "yes, interesting, perhaps",
discuss it a bit, and move on.

But because it's Brandt's pet herring it refuses to die and people go
around believing that "residual stress causes spoke failure".

This is particularly ironic as Brandt is himself the proud slayer of the
previous generation's myth and lore.

The truth is bicycle engineering is a bit of an amateur subject these
days, and Brandt is king of the hill. Most engineers are more concerned
with things like aircraft wings and if you published a book about them
containing the least inconsistency, misconception, or anecdotal
conclusion, you wouldn't get away with it for long.

There are real engineers working at places like Mavic and Shimano but
they don't post on RBT (as far as we know) so all we have to go on is
analysis of the finished products and dubious marketing material.
.

Relevant Pages

  • Re: Problems in a commercial flight
    ... I think you'll find that engineers spend the VAST amount of their time coming up with failure scenarios and building programming to mitigate them. ... So, I reiterate, why would an engineer, whom specifically works on projects such as failure states, fail to design a system that will fail in an acceptable manner, especially where lives are concerned? ... In any case, this example does not provide a situation where the computer system is the crutch of the operation, nor one where the failure is catastrophic, nor one where the failure is the fault of the computer system. ...
    (rec.aviation.piloting)
  • Re: So have Dennis/McLaren/Mercedes apologized to Raikkonen yet?
    ... was a very long time by any standards to be with a team. ... the same Kimi like he was when he left his first team Sauber. ... the drivers title in a car prone to failure certainly. ... management being checked by engineers b) manufacturing defects, ...
    (rec.autos.sport.f1)
  • Re: after the next accident...
    ... :> risks of a complex system; folks whose training and expertise is in building ... :> The job of the engineers is to make sure the manager understands both the ... trees nor the forest. ... :Ask an engineer if a system failure means that the decision to fly was ...
    (sci.space.shuttle)