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An exciting subject indeed!
I am about to fit an unused mild steel down pipe that I have had on the
shelf for maybe ten years. No sign of rust but I am away from home right
now so can not test it for flex. I might zap it with WD40 before fitting -
can=E2=80=99t hurt.
The question is - when brand new do the mild steel down pipes ever show any
sign of flex?
Neil
BN6
On Thu, Oct 24, 2019 at 2:42 PM Perry via Healeys <healeys@autox.team.net>
wrote:
> Listers
>
> As a follow up to my post on 10/18 on this exciting subject, I decided to
> do an experiment with a couple downpipes I had in the parts bin. Both pip=
es
> are new old stock and have never been on a car. One is stainless and the
> other mild steel. Both have been laying on a shelf in the garage for at
> least 9 years.
>
> The test was to measure how much deflection was noted in the flex portion
> of the downpipe when the tip (where it enters the muffler) is loaded with=
a
> weight. The upper portion of the pipe was firmly held by the bench vice.
>
> Should have started with something less then 10 pounds but the stainless
> moved considerably under that weight. The mild steel did not budge.
>
> At 47 pounds I heard a creaky noise but no movement on the mild steel. I
> then applied an unspecified force with my hand to the 47 pounds and no
> movement.
>
> My conclusion is that the mild steel flex pipe, once it takes a set, ie,
> Gets Rusty, does not flex. It is the weak link that will fail but it migh=
t
> as well be a piece of regular pipe.
>
> Perry
>
>
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=3D550986> for
> Windows 10
>
>
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Email: nmcd10@gmail.com
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<div><div dir=3D"auto">An exciting subject indeed!</div></div><div dir=3D"a=
uto"><br></div><div dir=3D"auto">I am about to fit an unused mild steel dow=
n pipe that I have had on the shelf for maybe ten years. No sign of rust bu=
t I am away from home right now so can not test it for flex. I might zap it=
with WD40 before fitting - can=E2=80=99t hurt.=C2=A0</div><div dir=3D"auto=
"><br></div><div dir=3D"auto">The question is - when brand new do the mild =
steel down pipes ever show any sign of flex?</div><div dir=3D"auto"><br></d=
iv><div dir=3D"auto">Neil</div><div dir=3D"auto">BN6</div><div><br><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 24, 20=
19 at 2:42 PM Perry via Healeys <<a href=3D"mailto:healeys@autox.team.ne=
t">healeys@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex"><div lang=3D"EN-US" link=3D"blue" vlink=3D"#954F72"><div class=3D"m_-=
4121697948113192191WordSection1"><p class=3D"MsoNormal">Listers</p><p class=
=3D"MsoNormal">As a follow up to my post on 10/18 on this exciting subject,=
I decided to do an experiment with a couple downpipes I had in the parts b=
in. Both pipes are new old stock and have never been on a car.=C2=A0 One is=
stainless and the other mild steel. Both have been laying on a shelf in th=
e garage for at least 9 years. </p><p class=3D"MsoNormal">The test was to m=
easure how much deflection was noted in the flex portion of the downpipe wh=
en the tip (where it enters the muffler) is loaded with a weight. The upper=
portion of the pipe was firmly held by the bench vice. </p><p class=3D"Mso=
Normal">Should have started with something less then 10 pounds but the stai=
nless moved considerably under that weight.=C2=A0 The mild steel did not bu=
dge.</p><p class=3D"MsoNormal">At 47 pounds I heard a creaky noise but no m=
ovement on the mild steel. I then applied an unspecified force with my hand=
to the 47 pounds and no movement. </p><p class=3D"MsoNormal">My conclusion=
is that the mild steel flex pipe, once it takes a set, ie, Gets Rusty, doe=
s not flex. It is the weak link that will fail but it might as well be a pi=
ece of regular pipe.</p><p class=3D"MsoNormal">Perry</p><p class=3D"MsoNorm=
al"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal">Sent from <a href=3D"htt=
ps://go.microsoft.com/fwlink/?LinkId=3D550986" target=3D"_blank">Mail</a> f=
or Windows 10</p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div></div=
>_______________________________________________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
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Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
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<br>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><=
div><div dir=3D"ltr"><div><div>____________________<br>Neil & Pam McDon=
ald<br><div><br></div></div></div>Email: <a href=3D"mailto:nmcd10@gmail.com=
" target=3D"_blank">nmcd10@gmail.com</a><br><div><div><br></div></div></div=
></div></div></div></div></div>
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