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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><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><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>