From: "Sboese sboese@uwyo.edu" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: RD-1C input shaft oil seal
Date: Wed, 3 Mar 2021 23:35:13 -0700
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Finn,

When I installed a vent in the top of my RD-1C drive it acted as an addition=
al drain.  The drive operated completely filled with oil until the size of t=
he original rear drain was increased to an ID of ~5/8=E2=80=9D (1/2=E2=80=9D=
 NPT pipe).

Steve Boese=20


> On Mar 3, 2021, at 5:46 PM, Finn Lassen finn.lassen@verizon.net <flyrotary=
@lancaironline.net> wrote:
>=20
> =EF=BB=BF
> =E2=97=86 This message was sent from a non-UWYO address. Please exercise c=
aution when clicking links or opening attachments from external sources.
>=20
>=20
> Dang! I just bought two of the National 350909 (single-lip) seals.
>=20
> I can see how I could add a retainer, but don't see enough space in the 1/=
2" plate for an o-ring.
> I added a vent to my RWS RD-1C drive, so internal pressure should not be a=
n issue (unless vent line gets clogged).
>=20
> Finn

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<html><head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"></=
head><body dir=3D"auto">Finn,<div><br></div><div>When I installed a vent in=
 the top of my RD-1C drive it acted as an additional drain. &nbsp;The drive=
 operated completely filled with oil until the size of the original rear dr=
ain was increased to an ID of ~5/8=E2=80=9D (1/2=E2=80=9D NPT pipe).</div><=
div><br></div><div>Steve Boese&nbsp;<br><br><div dir=3D"ltr"><br></div><div=
 dir=3D"ltr"><br><blockquote type=3D"cite">On Mar 3, 2021, at 5:46 PM, Finn=
 Lassen finn.lassen@verizon.net &lt;flyrotary@lancaironline.net&gt; wrote:<=
br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=
=BF


<div style=3D"border:solid red 2.25pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class=3D"MsoNormal" style=3D"line-height:11.35pt">=E2=97=86 This message=
 was sent from a non-UWYO address. Please exercise caution when clicking li=
nks or opening attachments from external sources.</p>
</div>
<br>
<div>
<div class=3D"moz-cite-prefix">Dang! I just bought two of the National 3509=
09 (single-lip) seals.<br>
<br>
I can see how I could add a retainer, but don't see enough space in the 1/2=
&quot; plate for an o-ring.<br>
I added a vent to my RWS RD-1C drive, so internal pressure should not be an=
 issue (unless vent line gets clogged).<br>
<br>
Finn</div>
</div>


</div></blockquote></div></body></html>=

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