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I have used sealant as well, just rebuilt an overdrive last week and used s=
ealant, will it make a difference, not so sure about that, but I have long =
accepted the fact that Austin-Healey leak oil and I don't worry about it. S=
everal years ago, a Club member proudly told me that his Healey no longer h=
ad any oil leaks and within a week the engine blew, was it related, not sur=
e but what a coincidence.
Jean
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of David Porter <f=
rogeye@porterscustom.com>
Sent: November 7, 2016 12:45 AM
To: Michael Salter; Austin Healeys List
Cc: Healey List
Subject: Re: [Healeys] Overdrive Question
I concur, but have on occasion used sealant. It's a PITA to get on both sid=
es properly during assembly.. There can be some dissimilar metal corrosion =
after all this time passage.
DaveP
On 11/6/2016 2:22 PM, Michael Salter wrote:
Hi Andy,
The thing is that there is no mention of the use of any type of sealant on =
the clutch ring in any of the literature that I have on the overdrive units=
...
Hard to imagine but I have never seen evidence of any on the virgin units t=
hat I have disassembled... I think it was just a dry joint!!!
Michael S
BN1 #174
On Sun, Nov 6, 2016 at 4:06 PM, Austin Healeys List <austinhealeyslist@gmai=
HI Michael
It has nothing to do with the studs stretching and everything to do
with the aluminium housing flexing. It only needs to move a tiny bit
to unstick the sealant and after that there is no longer anything
stopping the oil weeping out. I'll run an FEA simulation on it some
time to show just how flexible the ali case is.
btw, Yamabond, Kawabond, Hondabond, Suzukibond etc are all OEM names
for ThreeBond sealant.
Andy.
ail.com>> wrote:
> Out of interest I just did the calculations for the change in length of t=
he
> studs in this case.
> Assuming:
> 4 x 5/16" dia studs with an effective diameter of 0.25" each (thread root=
)
> and a length of 3" (in actual fact only the bottom pair are that long).
> 0.8 G of braking (which is probably way higher than our tires can generat=
e)
> Young's Modulus of 30,000,000 @ 100 degrees F
> 700 lbs of engine and gearbox (which is probably very high considering th=
at
> the the mounts are all rubber and the main engine mounts would absorb a
> fair bit as well)
> Works out to about 0.00028" of stretch.
> That's less than 10% of a human hair and only during panic braking if the
> tie rod is the only thing resisting the load.
> I think that there must be other contributing factors...
> Michael S
> BN1 #174
>
bluehealey@gmail.com>> wrote:
>
--
If you can't fix it with a hammer, you've got an electrical problem.
_______________________________________________
Archive: http://www.team.net/archive
http://autox.team.net/mailman/listinfo/healeys
orterscustom.com
--
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 87107 5=
05-352-1378 Go HERE: my world www.porterbikes.com/<http://www.porterbikes.c=
om/>
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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
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</head>
<body dir=3D"ltr">
<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font=
-family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr">
<p>I have used sealant as well, just rebuilt an overdrive last week and use=
d sealant, will it make a difference, not so sure about that, but I have lo=
ng accepted the fact that Austin-Healey leak oil and I don't worry about it=
. Several years ago, a Club member
proudly told me that his Healey no longer had any oil leaks and within a w=
eek the engine blew, was it related, not sure but what a coincidence.</p>
<p><br>
</p>
<p>Jean<br>
</p>
<br>
<br>
<div style=3D"color: rgb(0, 0, 0);">
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" color=
=3D"#000000" face=3D"Calibri, sans-serif"><b>From:</b> Healeys <healeys-=
bounces@autox.team.net> on behalf of David Porter <frogeye@porterscus=
tom.com><br>
<b>Sent:</b> November 7, 2016 12:45 AM<br>
<b>To:</b> Michael Salter; Austin Healeys List<br>
<b>Cc:</b> Healey List<br>
<b>Subject:</b> Re: [Healeys] Overdrive Question</font>
<div> </div>
</div>
<div>
<p>I concur, but have on occasion used sealant. It's a PITA to get on both =
sides properly during assembly.. There can be some dissimilar metal corrosi=
on after all this time passage.</p>
<p>DaveP</p>
<p><br>
</p>
<br>
<div class=3D"moz-cite-prefix">On 11/6/2016 2:22 PM, Michael Salter wrote:<=
br>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<div class=3D"gmail_default" style=3D"font-family:comic sans=0A=
ms,sans-serif; font-size:small">
Hi Andy,<br>
</div>
<div class=3D"gmail_default" style=3D"font-family:comic sans=0A=
ms,sans-serif; font-size:small">
The thing is that there is no mention of the use of any type of sealant on =
the clutch ring in any of the literature that I have on the overdrive units=
...
<br>
Hard to imagine but I have never seen evidence of any on the virgin units t=
hat I have disassembled... I think it was just a dry joint!!!<br>
</div>
<div class=3D"gmail_default" style=3D"font-family:comic sans=0A=
ms,sans-serif; font-size:small">
Michael S<br>
</div>
<div class=3D"gmail_default" style=3D"font-family:comic sans=0A=
ms,sans-serif; font-size:small">
BN1 #174<br>
</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Sun, Nov 6, 2016 at 4:06 PM, Austin Healeys L=
ist <span dir=3D"ltr">
<<a href=3D"mailto:austinhealeyslist@gmail.com"; target=3D"_blank">austin=
healeyslist@gmail.com</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0=0A=
.8ex; border-left:1px #ccc solid; padding-left:1ex">
HI Michael<br>
<br>
It has nothing to do with the studs stretching and everything to do<br>
with the aluminium housing flexing. It only needs to move a tiny bit<br>
to unstick the sealant and after that there is no longer anything<br>
stopping the oil weeping out. I'll run an FEA simulation on it some<br>
time to show just how flexible the ali case is.<br>
<br>
btw, Yamabond, Kawabond, Hondabond, Suzukibond etc are all OEM names<br>
for ThreeBond sealant.<br>
<br>
Andy.<br>
<div class=3D"HOEnZb">
<div class=3D"h5"><br>
<br>
On 11/7/16, Michael Salter <<a href=3D"mailto:michaelsalter@gmail.com";>m=
ichaelsalter@gmail.com</a>> wrote:<br>
> Out of interest I just did the calculations for the change in length o=
f the<br>
> studs in this case.<br>
> Assuming:<br>
> 4 x 5/16" dia studs with an effective diameter of 0.25" each=
(thread root)<br>
> and a length of 3" (in actual fact only the bottom pair are that =
long).<br>
> 0.8 G of braking (which is probably way higher than our tires can gene=
rate)<br>
> Young's Modulus of 30,000,000 @ 100 degrees F<br>
> 700 lbs of engine and gearbox (which is probably very high considering=
that<br>
> the the mounts are all rubber and the main engine mounts would absorb =
a<br>
> fair bit as well)<br>
> Works out to about 0.00028" of stretch.<br>
> That's less than 10% of a human hair and only during panic braking if =
the<br>
> tie rod is the only thing resisting the load.<br>
> I think that there must be other contributing factors...<br>
> Michael S<br>
> BN1 #174<br>
><br>
> On Sun, Nov 6, 2016 at 11:19 AM, Bluehealey <<a href=3D"mailto:blue=
healey@gmail.com">bluehealey@gmail.com</a>> wrote:<br>
><br>
</div>
</div>
</blockquote>
</div>
<br>
<br clear=3D"all">
<br>
-- <br>
<div class=3D"gmail_signature">
<div dir=3D"ltr">
<div>
<div dir=3D"ltr"><i><font size=3D"2"><span style=3D"color:black">If you can=
't fix it with a hammer, you've got an electrical problem.</span></font></i=
><br>
<br>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class=3D"mimeAttachmentHeader"></fieldset> <br>
<pre>_______________________________________________=0A=
.net/donate.html">http://www.team.net/donate.html</a>=0A=
Archive: <a class=3D"moz-txt-link-freetext" href=3D"http://www.team.net/arc=
hive">http://www.team.net/archive</a>=0A=
Forums: <a class=3D"moz-txt-link-freetext" href=3D"http://www.team.net/foru=
ms">http://www.team.net/forums</a>=0A=
=0A=
<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:Healeys@autox.team.net=
">Healeys@autox.team.net</a>=0A=
<a class=3D"moz-txt-link-freetext" href=3D"http://autox.team.net/mailman/li=
stinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a>=0A=
=0A=
.team.net/mailman/options/healeys/frogeye@porterscustom.com">http://autox.t=
eam.net/mailman/options/healeys/frogeye@porterscustom.com</a>=0A=
=0A=
</pre>
</blockquote>
<br>
<div class=3D"moz-signature">-- <br>
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 87107 5=
05-352-1378 Go HERE: my world
<a class=3D"moz-txt-link-abbreviated" href=3D"http://www.porterbikes.com/";>=
www.porterbikes.com/</a>
</div>
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_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
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