jim beam <
[email protected]> writes:
> Tim McNamara wrote:
>> jim beam <[email protected]> writes:
>>
>>>[email protected] wrote:
>>>
>>><snip>
>>>
>>>>Spoke-squeezing is an intriguingly mysterious subject to
>>>>research. I remain agnostic, wavering one way and the other, but
>>>>haven't seen any experimental data or analyses involving bicycle
>>>>spokes. If you have the 3rd edition, perhaps you could peek at the
>>>>Wiedemer stuff and give me your thoughts on it?
>>>
>>>you may also want to consider this question:
>>>
>>>q: elevator safety certification requires loading the cab to double
>>>it's "safe working load". this is to test the wire ropes that
>>>suspend it. the reason is that fracture mechanics predict that
>>>this process will typically reveal by failure any latent flaws.
>>>but, if we extend spoke squeezing theory, wouldn't this overload
>>>procedure also prevent fatigue of elevator cables?
>>>
>>>a: no. elevator cables still fatigue and need regular testing,
>>>inspection & replacement.
>>
>> Of course they fatique. They are constantly being wound around a
>> drum and unwound with a large weight dangling on the end. This
>> doesn't happen with spokes. Spokes are one fairly thick wire under
>> a fairly small load, elevator cables are thin-stranded cables with
>> internal friction, corrosion challenges, etc. Additionally, a
>> spoke supports a load much differently than an elevator cable, as
>> has been discussed and verified- independently of Brandt, BTW- by
>> finite element analysis. I see you're keeping the fine art of red
>> herrings alive.
>>
>>>the bottom line is that there is no quantification or testing of
>>>this spoke squeeze theory. squeezing "as hard as you can" is no
>>>more scientific than building with spoke tension "as high as the
>>>rim can bear". i would suggest to you that the reason academics
>>>"change the subject and get back to "serious" work" is because this
>>>theory is mere speculation - it's author has shown no basis in
>>>statistical fact, and most definitely not by metallurgical
>>>analysis.
>>
>> And it's easy to take cheap shots when he's out of town and not
>> able, therefore, to respond. I don't quite know why it sticks in
>> your craw so much to admit even the possibility that Jobst is
>> right, and it's an interesting psychological problem especially
>> when combined with your anonymity behind a boozy screen name. But
>> if you're going to seriously critique his work and not just take
>> potshots, come up with a quantified and testable alternative
>> analysis. Prove him wrong. Put up or shut up. Frankly, jim beam
>> old buddy old pal, I don't think you have the stuff.
>
> tim, you're like a drunken finnean looking for a bit of bare-knucked
> sport on his way home from a bar.
"Finnean?" Did you mean "Fenian"? Nice reference though.
> read what i said when you're sober, then show me one single piece of
> metallurgical evidence to support brandts bullying assertions. or
> your allusions to superior mental health come to that.
You'd have to take that up with the author of the book, eh? But as
usual you're ducking and weaving, casting rocks and aspersions and
then crying foul when you get treated the way you treat others. Stop
being a whiner and step up to the plate. If you can disprove Brandt's
theory, then do so. Put up or shut up. If you can't disprove his
ideas, then accept that he may in fact be right. I'll say it again- I
don't think you have the stuff. If you did, you would have actually
disproven Brandt a long time ago.
All I can say, not being an engineer, is that the wheels I've built
with his method have performed admirably, better than wheels I've
bought built according to the Wheelsmith specs and much better than
wheels I have bought built to who knows what specs (e.g., OEM wheels).
I'll settle for my 50,000 to 60,000 miles without a spoke breakage and
rarely having to true a wheel- even 9 speed wheels built with MA2
rims. At my weight (215 lbs, give or take 10), I'm pleased with the
results.
The type of guttersniping you indulge in does not advance the
discussion one whit. Over the years we've had recurrent posters with
the gunslinger mentality who come into town aiming to knock off the
big guy. You seem to be just another one of this species. I suspect
that many of those posters have been the same person hiding behind
different personae, due to consistencies in writing style and
conceptual framework. You don't raise chickens, by any chance?
As far as comparative mental health, not having met you I can't say
for sure. However, at least I don't have an obsessive hatred of
someone on the Internet with a need to continue to attack that person
over and over and over- even when I can't prove that person wrong.