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Subject: Re: [FlyRotary] Re: Adaptor plate rivets - Al' 20B
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=001636ed73520d7ae50482d1567d

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Well, its too late for any of that, Al.  The psru is back on the engine now=
.


Mark S.

On Sat, Mar 27, 2010 at 11:12 AM, Al Gietzen <ALVentures@cox.net> wrote:

>
>
> Good report Al.  It is interesting that there are streaks from only the
> back side.  Is it possible that you have cleaned the front side but due t=
o
> accessibility, didn't clean the back side?
>
> No; never did any cleaning of the plate.
>
>
>
> I received my close tolerance bolts and swapped out the AN-6A bolts.  The
> close tolerance bolts were definitely snugger in the holes, but all could=
 be
> installed by hand without needing to be tapped or driven in with a hammer=
.
>
> That=92s true; certainly not a press fit =96 but I don=92t think it matte=
rs.
> With the 20 bolts torqued to about 20 in-lbs =96 beyond the torque needed=
 to
> turn the lock nuts =96 (I think that=92s about the right number for these=
 bolts;
> I=92d have to double check) the clamping force between the flange and the
> plate is so high as to eliminate much in the way of shear forces on the
> bolts.  If you=92re concerned, a thin film of JB weld on the bolts before
> putting them in would eliminate any clearance =96 *and* make it impossibl=
e
> to ever remove them.
>
>
>
> Al
>
>
>

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Well, its too late for any of that, Al. =A0The psru is back on the engine n=
ow. =A0 =A0<div><br></div><div>Mark S.<br><br><div class=3D"gmail_quote">On=
 Sat, Mar 27, 2010 at 11:12 AM, Al Gietzen <span dir=3D"ltr">&lt;<a href=3D=
"mailto:ALVentures@cox.net">ALVentures@cox.net</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">











<div lang=3D"EN-US" link=3D"blue" vlink=3D"blue">

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">=A0</span></font></p>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">Good report Al. =A0It is =
interesting that there are
streaks from only the back side. =A0Is it possible that you have cleaned th=
e
front side but due to accessibility, didn&#39;t clean the back side? </span=
></font></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">No; never did =
any cleaning of the plate.</span></font></p>

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">=A0</span></font></p>

</div>

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">I received my close toler=
ance bolts and swapped out
the AN-6A bolts. =A0The close tolerance bolts were definitely snugger in th=
e
holes, but all could be installed by hand without needing to be tapped or
driven in with a hammer.</span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">That=92s true;=
 certainly not a press
fit =96 but I don=92t think it matters.=A0 With the 20 bolts torqued
to about 20 in-lbs =96 beyond the torque needed to turn the lock nuts =96
(I think that=92s about the right number for these bolts; I=92d have to
double check) the clamping force between the flange and the plate is so hig=
h as
to eliminate much in the way of shear forces on the bolts.=A0 If you=92re
concerned, a thin film of JB weld on the bolts before putting them in would
eliminate any clearance =96 <b><span style=3D"font-weight:bold">and</span><=
/b>
make it impossible to ever remove them.</span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">=A0</span></fo=
nt></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">Al</span></fon=
t> </p>

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">=A0</span></font></p>

</div>

</div>

</div>

</div>


</blockquote></div><br></div>

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