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I swear I=E2=80=99ve looked at some of these things =E2=80=93 exhaust =
mountings, if I had to commit =E2=80=93 and the rubber was splitting =
away from the metal because the metal was painted. So the adhesion was =
no better than the paint to metal bond. That can be pretty good, but if =
it isn=E2=80=99t and it just turns into a flakey mess..............
Simon
=20
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of =
michael.salter@gmail.com
Sent: 13 November 2016 17:35
To: David Porter; healeys@autox.team.net
Subject: Re: [Healeys] Engine Mounts
=20
Hi Dave,
Not sure how relevant this is but I have noticed that most rubber to =
steel bonding seems to start at the edges, particularly on original =
components.=20
I am inclined to believe that a large contributing factor in the steel =
to rubber bond is actually caused by corrosion of the steel.
Also usually it seems that the oxidation of the rubber is a quite thin =
layer and the underlying rubber is still in perfect condition although =
very old.
Of course this is not always the case as very deep cracks in the engine =
mount rubber blocks are not uncommon.=20
Just my observations.=20
Michael S=20
BN1 #174
With original BSF thread engine mounts..
Correct diagnosis is half of the repair.
On Sun, Nov 13, 2016 at 11:20 AM -0500, "David Porter" =
<frogeye@porterscustom.com> wrote:
Rubber continues to vulcanize throughout it's life time. As such it =
hardens and shrinks and eventually pulls the adhesive away from the =
mounts. Perhaps, one could use the new body panel epoxy's to reattach =
the rubber, but you would still have a very hard rubber buffer....
dp
=20
On 11/12/2016 5:24 PM, WILLIAM B LAWRENCE wrote:
The current thought is that rubber ages as well as being detrimentally =
affected by UV and environmental ozone. As such we are told not to use =
tires that are over six years old. I think the same thing happens to =
other rubber parts as well. I've installed rubber plugs and grommets on =
my BN1 that deteriorated with 6 months of installation. For that reason =
I won't buy "NOS" rubber parts and I think any new rubber parts should =
be date coded.
_____ =20
<healeys-bounces@autox.team.net> on behalf of Bob Spidell =
Sent: Saturday, November 12, 2016 2:24:11 PM
To: Healeys
Subject: [Healeys] Engine Mounts=20
=20
The engine mounts on my BJ8--whose engine I am overhauling--had the=20
rubber part separating from their metal backing. This didn't surprise=20
me, as they have 25+ years and 120K+ miles on them. However, I got under =
the BN2 the other day and noticed its mounts were separating as well,=20
and these only have a few years and a few hundred miles on them. =20
Apparently--like most rubber or rubber/metal parts from contemporary=20
suppliers--they are crap. Anyone know a source for quality, durable=20
engine mounts for Big Healeys?
TIA,
Bob
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://autox.team.net/mailman/options/healeys/ynotink@msn.com
_______________________________________________
Archive: http://www.team.net/archive
=20
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
=20
http://autox.team.net/mailman/options/healeys/frogeye@porterscustom.com
=20
=20
--=20
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM =
87107 505-352-1378 Go HERE: my world www.porterbikes.com/=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>I swear I=E2=80=99ve looked at some of these things =E2=80=93 exhaust =
mountings, if I had to commit =E2=80=93 and the rubber was splitting =
away from the metal because the metal was painted. So the adhesion was =
no better than the paint to metal bond. That can be pretty good, but if =
it isn=E2=80=99t and it just turns into a flakey =
mess..............<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Simon<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Healeys =
[mailto:healeys-bounces@autox.team.net] <b>On Behalf Of =
</b>michael.salter@gmail.com<br><b>Sent:</b> 13 November 2016 =
17:35<br><b>To:</b> David Porter; =
healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Engine =
Mounts<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><p =
style=3D'mso-margin-top-alt:18.75pt;margin-right:0cm;margin-bottom:12.0pt=
;margin-left:0cm;background:white'><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>H=
i Dave,<br>Not sure how relevant this is but I have noticed that most =
rubber to steel bonding seems to start at the edges, particularly on =
original components. <br>I am inclined to believe that a large =
contributing factor in the steel to rubber bond is actually caused by =
corrosion of the steel.<br>Also usually it seems that the oxidation of =
the rubber is a quite thin layer and the underlying rubber is still in =
perfect condition although very old.<br>Of course this is not always the =
case as very deep cracks in the engine mount rubber blocks are not =
uncommon. <br>Just my observations. <br>Michael S <br>BN1 #174<br>With =
original BSF thread engine mounts..<o:p></o:p></span></p><p =
style=3D'mso-margin-top-alt:18.75pt;margin-right:0cm;margin-bottom:18.75p=
t;margin-left:0cm;background:white'><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>C=
orrect diagnosis is half of the repair.<o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br><br><o:p></o:p></p><div><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'>On Sun, Nov 13, 2016 at =
11:20 AM -0500, "David Porter" <<a =
href=3D"mailto:frogeye@porterscustom.com"; =
target=3D"_blank">frogeye@porterscustom.com</a>> =
wrote:<o:p></o:p></p><div><p>Rubber continues to vulcanize throughout =
it's life time. As such it hardens and shrinks and eventually pulls the =
adhesive away from the mounts. Perhaps, one could use the new body panel =
epoxy's to reattach the rubber, but you would still have a very hard =
rubber buffer....<o:p></o:p></p><p>dp<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On =
11/12/2016 5:24 PM, WILLIAM B LAWRENCE =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div =
id=3D"x_divtagdefaultwrapper"><p><span =
style=3D'font-family:"Calibri","sans-serif";color:black'>The current =
thought is that rubber ages as well as being detrimentally affected by =
UV and environmental ozone. As such we are told not to use tires that =
are over six years old. I think the same thing happens to other rubber =
parts as well. I've installed rubber plugs and grommets on my BN1 that =
deteriorated with 6 months of installation. For that reason I won't buy =
"NOS" rubber parts and I think any new rubber parts should be =
date coded.<o:p></o:p></span></p></div><div class=3DMsoNormal =
align=3Dcenter style=3D'text-align:center'><hr size=3D2 width=3D"98%" =
align=3Dcenter></div><div id=3D"x_divRplyFwdMsg"><p =
class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'=
>From:</span></b><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'=
> Healeys <a =
href=3D"mailto:healeys-bounces@autox.team.net";><healeys-bounces@autox.=
team.net></a> on behalf of Bob Spidell <a =
href=3D"mailto:bspidell@comcast.net";><bspidell@comcast.net></a><br>=
<b>Sent:</b> Saturday, November 12, 2016 2:24:11 PM<br><b>To:</b> =
Healeys<br><b>Subject:</b> [Healeys] Engine Mounts</span> =
<o:p></o:p></p><div><p =
class=3DMsoNormal> <o:p></o:p></p></div></div></div><div><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt'>The engine mounts on my BJ8--whose engine I =
am overhauling--had the <br>rubber part separating from their metal =
backing. This didn't surprise <br>me, as they have 25+ years and =
120K+ miles on them. However, I got under <br>the BN2 the other day and =
noticed its mounts were separating as well, <br>and these only have a =
few years and a few hundred miles on them. =
<br>Apparently--like most rubber or rubber/metal parts from contemporary =
<br>suppliers--they are crap. Anyone know a source for quality, durable =
<br>engine mounts for Big =
Healeys?<br><br>TIA,<br><br>Bob<br><br>__________________________________=
_____________<br>Support Team.Net <a =
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html<=
/a><br>Suggested annual donation $12.75<br>Archive: <a =
href=3D"http://www.team.net/archive";>http://www.team.net/archive</a><br>F=
orums: <a =
href=3D"http://www.team.net/forums";>http://www.team.net/forums</a><br><br=
><a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><br><a =
href=3D"http://autox.team.net/mailman/listinfo/healeys";>http://autox.team=
.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a =
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></span></p></div><p =
class=3DMsoNormal><br><br><br><o:p></o:p></p><pre>_______________________=
________________________<o:p></o:p></pre><pre>Support Team.Net <a =
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html<=
/a><o:p></o:p></pre><pre>Suggested annual donation=C2=A0 =
$12.75<o:p></o:p></pre><pre>Archive: <a =
href=3D"http://www.team.net/archive";>http://www.team.net/archive</a><o:p>=
</o:p></pre><pre>Forums: <a =
href=3D"http://www.team.net/forums";>http://www.team.net/forums</a><o:p></=
o:p></pre><pre><o:p> </o:p></pre><pre><a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><o:p></o=
:p></pre><pre><a =
href=3D"http://autox.team.net/mailman/listinfo/healeys";>http://autox.team=
.net/mailman/listinfo/healeys</a><o:p></o:p></pre><pre><o:p> </o:p><=
/pre><pre>Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/healeys/frogeye@porterscust=
om.com">http://autox.team.net/mailman/options/healeys/frogeye@porterscust=
om.com</a><o:p></o:p></pre><pre><o:p> </o:p></pre></blockquote><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>-- =
<br>Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM =
87107 505-352-1378 Go HERE: my world <a =
href=3D"http://www.porterbikes.com/";>www.porterbikes.com/</a> =
<o:p></o:p></p></div></div></div></div></body></html>
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_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============6351574089241911497==--
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