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To: flyrotary@lancaironline.net
Subject: Re: [FlyRotary] Re: Ok Here are the important flywheel measurements
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I just had another thought:
You might consider trying another 13b flexplate, but using a more comprehen=
sive test for cracks before you put it in service.=20
Look the candidate flexplates over with a magifying glass, then, if they pa=
ss, use dye penetrant test or magnetic particle testing?
What I'm getting at here, is that your failed unit may have been flawed bef=
ore you put it in service.=20
After finding a flex plate that passes, spend some time de-burring and poli=
shing the stress zones based on the failed flex plate's cracks; that is to =
say, where you think the failures may have started.






-----Original Message-----
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, Jul 17, 2011 9:21 pm
Subject: [FlyRotary] Re: Ok Here are the important flywheel measurements


That is not a bad idea while I have it all apart, as I have not changed the=
m out yet.  Inspection does not show anything that looks like a smoking riv=
et.
=20
--=20
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net



On Sun, Jul 17, 2011 at 2:17 PM, Tracy <rwstracy@gmail.com> wrote:



a kelly wrote:


.Did you replace the
aluminum rivets in your RD1X damper plate with steel bolts ?..............I=
 seem to remember that
you did after several dampers (and yours) experienced alum streaking around=
 the rivets...........





Just FYI to the group,  the change I settled on for the damper rivets was t=
o use -AD rivets instead of -A.   The tensile strength is about 3 times hig=
her on the -AD.


Tracy

Sent from my iPad


On Jul 17, 2011, at 4:45 PM, Kelly Troyer <keltro@att.net> wrote:



.Did you replace the=20
aluminum rivets in your RD1X damper plate with steel bolts ?..............I=
 seem to remember that=20
you did after several dampers (and yours) experienced alum streaking around=
 the rivets...........








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<font color=3D'black' size=3D'2' face=3D'arial'>
<div><FONT face=3D"Arial, Helvetica, sans-serif">I just had another thought=
:</FONT></div>


<div>You might consider trying another 13b flexplate, but using a more comp=
rehensive test for cracks before you put it in service. </div>


<div>Look the candidate flexplates over with a magifying glass, then, if th=
ey pass, use dye penetrant test or magnetic particle testing?</div>


<div>What I'm getting at here, is that your failed unit may have been flawe=
d before you put it in service. </div>


<div>After finding a flex plate that passes, spend some time de-burring and=
 polishing the stress zones based on the failed flex plate's cracks; that i=
s to say, where you think the failures may have started.<br>
<br>
</div>


<div style=3D"CLEAR: both"></div>
<br>
<br>


<div style=3D"FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">=
-----Original Message-----<br>
From: David Leonard &lt;wdleonard@gmail.com&gt;<br>
To: Rotary motors in aircraft &lt;flyrotary@lancaironline.net&gt;<br>
Sent: Sun, Jul 17, 2011 9:21 pm<br>
Subject: [FlyRotary] Re: Ok Here are the important flywheel measurements<br=
>
<br>


<div id=3DAOLMsgPart_1_4248f83d-6742-4a19-ab9b-30b14f70c5a1>

<div>That is not a bad idea while I have it all apart, as I have not change=
d them out yet.&nbsp; Inspection does not show anything that looks like a s=
moking rivet.</div>


<div>&nbsp;</div>


<div>-- <br>
David Leonard<br>
<br>
Turbo Rotary RV-6 N4VY<br>
<A href=3D"http://n4vy.rotaryroster.net/" target=3D_blank>http://N4VY.Rotar=
yRoster.net</A><br>
<A href=3D"http://rotaryroster.net/" target=3D_blank>http://RotaryRoster.ne=
t</A><br>
<br>
<br>
</div>


<div class=3Dgmail_quote>On Sun, Jul 17, 2011 at 2:17 PM, Tracy <SPAN dir=
=3Dltr>&lt;<A href=3D"mailto:rwstracy@gmail.com">rwstracy@gmail.com</A>&gt;=
</SPAN> wrote:<br>

<BLOCKQUOTE style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex=
; PADDING-LEFT: 1ex" class=3Dgmail_quote>

<div bgcolor=3D"#FFFFFF">

<div><SPAN style=3D"FONT-FAMILY: arial, helvetica, sans-serif; FONT-SIZE: 1=
6px">

<div class=3Dim>

<div><SPAN>a kelly wrote:</SPAN></div>


<div><SPAN><br>
</SPAN></div>


<div><SPAN>.Did you replace the</SPAN></div>


<div><SPAN>aluminum rivets in your RD1X damper plate with steel bolts ?....=
..........I seem to remember that</SPAN></div>


<div><SPAN>you did after&nbsp;</SPAN><SPAN>several dampers (and yours)&nbsp=
;experienced alum streaking around the rivets...........</SPAN></div>


<div><SPAN><br>
</SPAN></div>


<div><SPAN><br>
</SPAN></div>
</div>


<div><SPAN>Just FYI to the group, &nbsp;the change I settled on for the dam=
per rivets was to use -AD rivets instead of -A. &nbsp; The tensile strength=
 is about 3 times higher on the -AD.</SPAN></div>


<div><SPAN><br>
</SPAN></div>


<div><SPAN>Tracy</SPAN></div>
</SPAN><br>
Sent from my iPad</div>


<div class=3Dim>

<div><br>
On Jul 17, 2011, at 4:45 PM, Kelly Troyer &lt;<A href=3D"mailto:keltro@att.=
net">keltro@att.net</A>&gt; wrote:<br>
<br>
</div>

<BLOCKQUOTE type=3D"cite">

<div><SPAN>.Did you replace the </SPAN></div>


<div><SPAN>aluminum rivets in your RD1X damper plate with steel bolts ?....=
..........I seem to remember that </SPAN></div>


<div><SPAN>you did after </SPAN><SPAN>several dampers (and yours)&nbsp;expe=
rienced alum streaking around the rivets...........</SPAN></div>
</BLOCKQUOTE>

<div></div>
</div>
</div>
</BLOCKQUOTE></div>
<br>
<BR clear=3Dall><br>
</div>
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