Quoted message said:Quoted message said:Indeed, there are problems with Mike's claim. First, it's simply
unprovable because there are no inventories or records, bikes not having
titles or license plates like cars there's no way to trace them.
Second, in the US 50 years ago most bikes were basically built for
children from welded mild steel and have long since been discarded due
to non-use; that means there's not that much of a selection of 50 years
old brazed US-made frames to begin with. Third, even most of the brazed
frames were long ago discarded due to non-use. Neither the second or
third groups failed in large numbers, they were just thrown away. Few
Americans have been riding regularly for 50 years, let alone riding
regularly for 50 years on the same bike.OK, we could bring it back quite a few years then, and talk about bikes
from the 70s. Of that I have a great amount of first-hand experience. Of
the many thousands that I sold during the 70s, I would say a greater
number than people here are prepared to believe "failed" in use. That
"use" typically constituted running into thing and bending forks back and
buckling downtubes. Of the bikes coming into the shop for repair, a very
large number exhibited that sort of damage. It's my opinion that, used
long enough, most steel bikes would have fallen victim to that fate. For
what it's worth, I have personal experience with two different steel bikes
that did so. I have experience with one failure on a modern carbon frame &
fork; that was when a car backed out into me and I landed on the rear
hood. The steel fork column bent; everything else remained intact. The
frame continues on to this day (many years later). The fork was retired
due to the bent column.
That was a dumb response on my part. I started trying to substantiate the
claim I was making, when the point I was initially trying to make was that
you couldn't possibly substantiate that sort of thing (that there are a
whole lot of 50+ year old bicycles in service because they last so much
better than what's come after... since we have no idea how many were made,
what sort of use they've had, how many failed vs thrown away because they
weren't needed anymore etc.).
--Mike Jacoubowsky
Chain Reaction Bicycles
www.ChainReaction.com
Redwood City & Los Altos, CA USA
"Mike Jacoubowsky" <[email hidden]> wrote in message
news:[email hidden]...
Quoted message said:Quoted message said:Indeed, there are problems with Mike's claim. First, it's simply
unprovable because there are no inventories or records, bikes not having
titles or license plates like cars there's no way to trace them.
Second, in the US 50 years ago most bikes were basically built for
children from welded mild steel and have long since been discarded due
to non-use; that means there's not that much of a selection of 50 years
old brazed US-made frames to begin with. Third, even most of the brazed
frames were long ago discarded due to non-use. Neither the second or
third groups failed in large numbers, they were just thrown away. Few
Americans have been riding regularly for 50 years, let alone riding
regularly for 50 years on the same bike.OK, we could bring it back quite a few years then, and talk about bikes
from the 70s. Of that I have a great amount of first-hand experience. Of
the many thousands that I sold during the 70s, I would say a greater
number than people here are prepared to believe "failed" in use. That
"use" typically constituted running into thing and bending forks back and
buckling downtubes. Of the bikes coming into the shop for repair, a very
large number exhibited that sort of damage. It's my opinion that, used
long enough, most steel bikes would have fallen victim to that fate. For
what it's worth, I have personal experience with two different steel bikes
that did so. I have experience with one failure on a modern carbon frame &
fork; that was when a car backed out into me and I landed on the rear
hood. The steel fork column bent; everything else remained intact. The
frame continues on to this day (many years later). The fork was retired
due to the bent column.--Mike-- Chain Reaction Bicycles
www.ChainReactionBicycles.com"Tim McNamara" <[email hidden]> wrote in message
news:[email hidden]...Quoted message said:In article <[email hidden]>,
_ said:On Tue, 09 Oct 2007 00:05:45 GMT, Mike Jacoubowsky wrote:
>> Perhaps it is becuase these plastic frames are not old enough (or
>> break before from other causes) for such failures to show up.
>> Brazed steel frames have been around for at least a century - not
>> the method, but the actual frames.
>
> I'll go out on a limb here, and claim that there are far fewer
> brazed steel frames more than even a mere 50 years old, intact,
> than there are such frames that have failed. Does that mean that,
> because the evidence is that most failed, steel is a bad material
> to build a frame out of? I don't think so, but...
>Careful now, claims without evidence are jim beam's territory...
Indeed, there are problems with Mike's claim. First, it's simply
unprovable because there are no inventories or records, bikes not having
titles or license plates like cars there's no way to trace them.
Second, in the US 50 years ago most bikes were basically built for
children from welded mild steel and have long since been discarded due
to non-use; that means there's not that much of a selection of 50 years
old brazed US-made frames to begin with. Third, even most of the brazed
frames were long ago discarded due to non-use. Neither the second or
third groups failed in large numbers, they were just thrown away. Few
Americans have been riding regularly for 50 years, let alone riding
regularly for 50 years on the same bike.I remember a few years ago someone at the CTC published the question
"does anybody have a 50 year old bike in daily use" and got hundreds of
replies and photos from their members, some of whose daily riders were
60+ years old which were hand-me-downs from their parents or other older
relatives. I remember a lovely RRA from the first couple of years of
production that was still being ridden thousands of miles a year. The
CTC magazine editor asked people to stop sending in pictures of their
bikes because it was overwhelming.Locally, riding around town and casually observing, I'd say that fully
half the bikes I see are 25-30 years old. This has increased over the
past five years or so quite dramatically.