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Re: [Healeys] Overdrive pressure or clutch slip Step 2!

To: Jonas Payne <jpaynepbr@cox.net>
Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!
From: Michael Salter <michaelsalter@gmail.com>
Date: Fri, 26 Apr 2024 22:20:19 -0400
Cc: "healeys@autox.team.net" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CH3PR20MB62652943157AC98499F392B4F0162@CH3PR20MB6265.namprd20.prod.outlook.com>
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Very interesting Jonas.
 I  have had 2 cars  non working "rebuilt" overdrives brought to me for
rectification and in both cases one or more long springs were installed in
the inner position. Neither would go into overdrive despite the usual "
flick" of the pressure gauge indicating that the valve had opened.
I can only imagine that the amount of wear of the linings makes the
difference.
M

On Fri., Apr. 26, 2024, 8:53 p.m. jpaynepbr@cox.net, <jpaynepbr@cox.net>
wrote:

> Michael,
>
> I actually got the springs reversed on my last rebuild.
>
> OD engaged when I bench tested it, so I thought it was good.
>
> In the car, OD would engage and hold until a load was applied.
>
> It happily engaged with the car on jack stands and while driving downhill
> or on level ground, but the instant you tried to accelerate or encountere=
d
> a grade, out it would come.
>
> When I took it apart, you could plainly see the wear pattern and that the
> clutch surfaces were only engaging about 1/32".
>
> Jonas
>
>
>
> With all due respects Hank you have this backwards.
>
> .*However if the springs are misinstalled in the wrong position or not
> properly mounted on their tabs upon assembly or previously "coil bound"
> from that procedure or wear, they will not function to keep direct drive
> solid without slipping*.
>
> If the springs are installed incorrectly as in even one of them sitting o=
n
> top on the little posts, or even one long spring where a short is meant t=
o
> be, the unit will be solidly locked in "normal" i.e. non overdrive as the=
re
> never going to be enough hydraulic pressure to move a spring beyond "coil
> bound".
> Don't ask me how I know =F0=9F=98=B3
>
> M
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>

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<div dir=3D"auto">Very interesting Jonas.<div dir=3D"auto">=C2=A0I=C2=A0 ha=
ve had 2 cars=C2=A0 non working &quot;rebuilt&quot; overdrives brought to m=
e for rectification and in both cases one or more long springs were install=
ed in the inner position. Neither would go into overdrive despite the usual=
 &quot; flick&quot; of the pressure gauge indicating that the valve had ope=
ned.=C2=A0</div><div dir=3D"auto">I can only imagine that the amount of wea=
r of the linings makes the difference.=C2=A0</div><div dir=3D"auto">M</div>=
</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">=
On Fri., Apr. 26, 2024, 8:53 p.m. <a href=3D"mailto:jpaynepbr@cox.net";>jpay=
nepbr@cox.net</a>, &lt;<a href=3D"mailto:jpaynepbr@cox.net";>jpaynepbr@cox.n=
et</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
Michael,</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
I actually got the springs reversed on my last rebuild.=C2=A0 =C2=A0</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
OD engaged when I bench tested it, so I thought it was good.</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
In the car, OD would engage and hold until a load was applied.</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
It happily engaged with the car on jack stands and while driving downhill o=
r on level ground, but the instant you tried to accelerate or encountered a=
 grade, out it would come.=C2=A0</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
When I took it apart, you could plainly see the wear pattern and that the c=
lutch surfaces were only engaging about 1/32&quot;.</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
=C2=A0</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
Jonas</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
With all due respects Hank you have this backwards.=C2=A0</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12.8px;color:rgb(0,0,0)">
.<i>However if the springs are misinstalled in the wrong position or not pr=
operly mounted on their tabs upon assembly or previously &quot;coil bound&q=
uot; from that procedure or wear, they will not function to keep direct dri=
ve solid without slipping</i>.</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
If the springs are installed incorrectly as in even one of them sitting on =
top on the little posts, or even one long spring where a short is meant to =
be, the unit will be solidly locked in &quot;normal&quot; i.e. non overdriv=
e as there never going to be enough hydraulic
 pressure to move a spring beyond &quot;coil bound&quot;.</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
Don&#39;t ask me how I know =F0=9F=98=B3</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"direction:ltr;text-align:left;text-indent:0px;margin:0px;font=
-family:&quot;Segoe UI Web (West European)&quot;,&quot;Segoe UI&quot;,-appl=
e-system,BlinkMacSystemFont,Roboto,&quot;Helvetica Neue&quot;,sans-serif;fo=
nt-size:12pt;color:rgb(0,0,0)">
M</div>
</div>

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