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I have found that the life of rubber bushings varies greatly depending =
on application and materials, lower inner suspension bushings on the =
front suspensions of TRs and Big Healeys, have been known to be doing =
yeoman's service on the cars from new til now (they are usually rusted =
on and a pita to replace as well). The upper inners on the TR4-6 don't =
seem to last nearly as long.
I have polyurethane on the upper front inners of my TR250, they didn't =
appear to be wearing out when I took them out for re-lubing this year, =
after about 4-5 years of use that had gotten very squeaky (but lots of =
silicone grease and they are very quiet again).
I have heard that polyurethanes can wear out from friction, and they =
will pivot instead of flexing in many if not most applications, but I =
haven't experienced it on many of my cars.
Greg Lemon
From: Sujit Roy=20
Sent: Monday, April 6, 2015 6:27 PM
To: Triumphs=20
Subject: [TR] What's the general life expectancy for rubber bushes for =
LBCs?
I changed them 14 years bac on my Stag This were the days before I heard =
about polyurethane.
Are polyurethane bushes really fit and forget?
Sujit
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3Dtext/html;charset=3Dutf-8 http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 11.00.9600.17690"></HEAD>
<BODY id=3DMailContainerBody=20
style=3D"PADDING-TOP: 15px; PADDING-LEFT: 10px; PADDING-RIGHT: 10px" =
leftMargin=3D0=20
topMargin=3D0 CanvasTabStop=3D"true" name=3D"Compose message area">
<DIV><FONT face=3DCalibri>I have found that the life of rubber bushings =
varies=20
greatly depending on application and materials, lower inner suspension =
bushings=20
on the front suspensions of TRs and Big Healeys, have been known to be =
doing=20
yeoman's service on the cars from new til now (they are usually rusted =
on and a=20
pita to replace as well). The upper inners on the TR4-6 don't seem =
to last=20
nearly as long.</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>I have polyurethane on the upper front inners =
of my=20
TR250, they didn't appear to be wearing out when I took them out for =
re-lubing=20
this year, after about 4-5 years of use that had gotten very squeaky =
(but lots=20
of silicone grease and they are very quiet again).</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>I have heard that polyurethanes can wear out =
from=20
friction, and they will pivot instead of flexing in many if not most=20
applications, but I haven't experienced it on many of my =
cars.</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>Greg Lemon</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV style=3D"FONT: 10pt Tahoma">
<DIV><BR></DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dtriumphstag@gmail.com=20
href=3D"mailto:triumphstag@gmail.com";>Sujit Roy</A> </DIV>
<DIV><B>Sent:</B> Monday, April 6, 2015 6:27 PM</DIV>
<DIV><B>To:</B> <A title=3Dtriumphs@autox.team.net=20
href=3D"mailto:triumphs@autox.team.net";>Triumphs</A> </DIV>
<DIV><B>Subject:</B> [TR] What's the general life expectancy for rubber =
bushes=20
for LBCs?</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV dir=3Dltr>
<DIV class=3Dgmail_signature>I changed them 14 years bac on my Stag This =
were the=20
days before I heard about polyurethane.</DIV>
<DIV class=3Dgmail_signature><BR></DIV>
<DIV class=3Dgmail_signature>Are polyurethane bushes really fit and =
forget?</DIV>
<DIV class=3Dgmail_signature><BR></DIV>
<DIV class=3Dgmail_signature><BR></DIV>
<DIV class=3Dgmail_signature><BR></DIV>
<DIV class=3Dgmail_signature><BR></DIV>
<DIV class=3Dgmail_signature>Sujit</DIV></DIV>
<P>
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