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Thanks for the info Perry. So it would seem that the best setup would be a =
mild steel system from the muffler back for the sound and stainless downpip=
es for the flex.
Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Perry via Heale=
ys <healeys@autox.team.net>
Sent: Thursday, October 24, 2019 1:42 PM
To: healeys <healeys@autox.team.net>
Subject: [Healeys] Down Pipes - The Final Saga
Listers
As a follow up to my post on 10/18 on this exciting subject, I decided to d=
o 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 o=
ther mild steel. Both have been laying on a shelf in the garage for at leas=
t 9 years.
The test was to measure how much deflection was noted in the flex portion o=
f 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 mo=
ved 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 th=
en applied an unspecified force with my hand to the 47 pounds and no moveme=
nt.
My conclusion is that the mild steel flex pipe, once it takes a set, ie, Ge=
ts 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=3D550986> for Window=
s 10
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Thanks for the info Perry. So it would seem that the best setup would =
be a mild steel system from the muffler back for the sound and stainless do=
wnpipes for the flex.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
color: rgb(0, 0, 0);">
Bill Lawrence</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
color: rgb(0, 0, 0);">
BN1 #554</div>
<div id=3D"appendonsend"></div>
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<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys <healeys-b=
ounces@autox.team.net> on behalf of Perry via Healeys <healeys@autox.=
team.net><br>
<b>Sent:</b> Thursday, October 24, 2019 1:42 PM<br>
<b>To:</b> healeys <healeys@autox.team.net><br>
<b>Subject:</b> [Healeys] Down Pipes - The Final Saga</font>
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<p class=3D"x_MsoNormal">Listers</p>
<p class=3D"x_MsoNormal">As a follow up to my post on 10/18 on this excitin=
g subject, I decided to do an experiment with a couple downpipes I had in t=
he parts bin. Both pipes are new old stock and have never been on a car.&nb=
sp; 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=3D"x_MsoNormal">The test was to measure how much deflection was no=
ted in the flex portion of the downpipe when the tip (where it enters the m=
uffler) is loaded with a weight. The upper portion of the pipe was firmly h=
eld by the bench vice.
</p>
<p class=3D"x_MsoNormal">Should have started with something less then 10 po=
unds but the stainless moved considerably under that weight. The mild=
steel did not budge.</p>
<p class=3D"x_MsoNormal">At 47 pounds I heard a creaky noise but no movemen=
t on the mild steel. I then applied an unspecified force with my hand to th=
e 47 pounds and no movement.
</p>
<p class=3D"x_MsoNormal">My conclusion is that the mild steel flex pipe, on=
ce 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=3D"x_MsoNormal">Perry</p>
<p class=3D"x_MsoNormal"> </p>
<p class=3D"x_MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fwli=
nk/?LinkId=3D550986">
Mail</a> for Windows 10</p>
<p class=3D"x_MsoNormal"> </p>
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