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re: "NOS BN1 mild steel down pipe never been installed. No rust. Minimum
20 years old - No flex solid as a rock."
Doesn't seem right to me; there may be rust that isn't visible. I'd
spray penetrant oil on it a few times and 'work' it; I'd bet it will
loosen up.
On 10/24/2019 6:00 PM, Harold Manifold wrote:
> Since we are using science and design of experiments I would like to
> add to the research.
> Test 1 - Brand new AH Spares (Bell) SS down pipe - 1" of flex with
> moderate hand pressure.
> Test 2 - Same as above for the other down pipe.
> Test 3 - NOS BN1 mild steel down pipe never been installed. No rust.
> Minimum 20 years old - No flex solid as a rock.
> BTW the NOS BN1 pipe is for sale. It would be suitable for a concourse
> restoration.
> Regards,
> Harold
>
> ------------------------------------------------------------------------
> *From:* Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of
> *Bob Spidell
> *Sent:* Thursday, October 24, 2019 7:28 AM
> *To:* healeys@autox.team.net
> *Subject:* Re: [Healeys] Down Pipes - The Final Saga
>
> re: "... hen brand new do the mild steel down pipes ever show any sign
> of flex?"
>
> If you mean does the flexible section, well, flex? Yes, they do;
> maybe an inch or two of deflection at the end.
>
> Bob
>
> On 10/24/2019 6:52 AM, Neil McDonald wrote:
>> 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?t 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
>>
>> 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 pipes 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 might as well be a piece of regular pipe.
>>
>> Perry
>>
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>
>> for Windows 10
>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
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>>
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>> --
>> ____________________
>> Neil & Pam McDonald
>>
>>
>>
>> _______________________________________________
>> Support Team.Nethttp://www.team.net/donate.html
>> Suggested annual donation $12.75
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>> Archive:http://www.team.net/pipermail/healeys http://autox.team.net/archive
>>
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>>
>
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re: "<span class="454595300-25102019"><font size="2" face="Arial"
color="#0000ff">NOS BN1 mild steel down pipe never been
installed. No rust. Minimum 20 years old - No flex solid as a
rock."<br>
<br>
Doesn't seem right to me; there may be rust that isn't visible.
I'd spray penetrant oil on it a few times and 'work' it; I'd bet
it will loosen up.<br>
</font></span><br>
<div class="moz-cite-prefix">On 10/24/2019 6:00 PM, Harold Manifold
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5DB62D25B9F54042A50D7F1082BAD404@AllInOne">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
<meta name="GENERATOR" content="MSHTML 11.00.10570.1001">
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Since we are using
science and design of experiments I would like to add to the
research.</font></span></div>
<div dir="ltr" align="left"><span
class="454595300-25102019"></span> </div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Test 1 - Brand new AH
Spares (Bell) SS down pipe - 1" of flex with moderate hand
pressure.</font></span></div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Test 2 - Same as above
for the other down pipe.</font></span></div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Test 3 - NOS BN1 mild
steel down pipe never been installed. No rust. Minimum 20
years old - No flex solid as a rock.</font></span></div>
<div dir="ltr" align="left"><span
class="454595300-25102019"></span> </div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">BTW the NOS BN1 pipe
is for sale. It would be suitable for a concourse
restoration.</font></span></div>
<div dir="ltr" align="left"><span
class="454595300-25102019"></span> </div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Regards,</font></span></div>
<div dir="ltr" align="left"><span
class="454595300-25102019"></span> </div>
<div dir="ltr" align="left"><span class="454595300-25102019"><font
size="2" face="Arial" color="#0000ff">Harold</font></span></div>
<br>
<div class="OutlookMessageHeader" dir="ltr" lang="en-us"
align="left">
<hr tabindex="-1">
<font size="2" face="Tahoma"><b>From:</b> Healeys
[<a class="moz-txt-link-freetext"
href="mailto:healeys-bounces@autox.team.net";>mailto:healeys-bounces@autox.team.net</a>]
<b>On Behalf Of </b>Bob
Spidell<br>
<b>Sent:</b> Thursday, October 24, 2019 7:28 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated"
href="mailto:healeys@autox.team.net";>healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Down Pipes - The Final Saga<br>
</font><br>
</div>
re: "... hen brand new do the mild steel down pipes ever show any
sign of flex?"<br>
<br>
If you mean does the flexible section, well, flex? Yes, they do;
maybe an inch or two of deflection at the end.<br>
<br>
Bob<br>
<br>
<div class="moz-cite-prefix">On 10/24/2019 6:52 AM, Neil McDonald
wrote:<br>
</div>
<blockquote
cite="mid:CAM8RsFcAu-9EGm0CEKDwxyEhHW31JoaKqKvjb3_pOd1qim2ojw@mail.gmail.com"
type="cite">
<div>
<div>An exciting subject indeed!</div>
</div>
<div><br>
</div>
<div>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?t hurt. </div>
<div><br>
</div>
<div>The question is - when brand new do the mild steel down
pipes ever show any sign of flex?</div>
<div><br>
</div>
<div>Neil</div>
<div>BN6</div>
<div><br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Thu, Oct 24, 2019 at
2:42 PM Perry via Healeys <<a
href="mailto:healeys@autox.team.net";
moz-do-not-send="true">healeys@autox.team.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex;
BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
<div vlink="#954F72" link="blue" lang="EN-US">
<div class="m_-4121697948113192191WordSection1">
<p class="MsoNormal">Listers</p>
<p class="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 bin. Both pipes 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. </p>
<p class="MsoNormal">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. </p>
<p class="MsoNormal">Should have started with
something less then 10 pounds but the stainless
moved considerably under that weight. The mild
steel did not budge.</p>
<p class="MsoNormal">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. </p>
<p class="MsoNormal">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 might as well be a piece of regular
pipe.</p>
<p class="MsoNormal">Perry</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Sent from <a
href="https://go.microsoft.com/fwlink/?LinkId=550986";
target="_blank" moz-do-not-send="true">Mail</a>
for Windows 10</p>
<p class="MsoNormal"> </p>
</div>
</div>
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-- <br>
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<div>____________________<br>
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