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Date: Tue, 3 May 2011 11:58:53 -0400
Message-ID: <BANLkTimnekd9C8yZ3P0J7e6i61rHBZuHGQ@mail.gmail.com>
Subject: Re: [FlyRotary] Oil pickup spacer, pt. II
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Dale,
   I've often wondered what those disks were for.   They are not on all
pickups, most have a simple oval flange with mounting holes.

FWIW, I extended my pickup by the simple expedient of heating the pickup
tube a bit and bending it down 1/2" .  It's worked for 1800 hours so I don't
think it creates any problems.

Tracy


On Tue, May 3, 2011 at 11:48 AM, <dale.r@cox.net> wrote:

> Thank you, everyone who offered their observations on my project.  For the
> time being, I'm going with "gasket surface" - because it is the least
> expensive.  The first photo shows the two variants I've made.
>
> Although I still like the elegance of using o-rings, the simplest way to
> put a suitable groove for the o-ring requires a $40 annular cutter that I
> don't know I'd ever have another use for.  I suppose that I could recover
> the cost of the tool, if enough other people wanted to buy such a part, but
> it also sounds like a lot of folks here are moving away from the bed mount.
>  So, I'm taking the KIS route.
>
> Now I have another question.  It may be that I just haven't looked in the
> right places for the information I want, but I can't fathom what's going on
> with the pickup in the second photo.  The reason I made the part on the left
> of photo 1 was to provide clearance for the four disks that are staked into
> those recesses.  What are they there for?  There are four galleys leading
> from the inside of the center hole to the four recesses.  They look rather
> like freeze plugs, but the physics looks wrong for protecting against
> overpressure.  If I use the spacer on the right, do I induce some risk by
> blocking those disks?
>
> ADVthanksANCE,
> Dale_R
> COZY MkIV #0497
> Ch. 13 in-progress
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>

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Dale,<br>=A0=A0 I&#39;ve often wondered what those disks were for.=A0=A0 Th=
ey are not on all pickups, most have a simple oval flange with mounting hol=
es.<br><br>FWIW, I extended my pickup by the simple expedient of heating th=
e pickup tube a bit and bending it down 1/2&quot; .=A0 It&#39;s worked for =
1800 hours so I don&#39;t think it creates any problems.<br>
<br>Tracy<br><br><br><div class=3D"gmail_quote">On Tue, May 3, 2011 at 11:4=
8 AM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:dale.r@cox.net">dale.r@cox.n=
et</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Thank you, everyone who offered their observations on my project. =A0For th=
e time being, I&#39;m going with &quot;gasket surface&quot; - because it is=
 the least expensive. =A0The first photo shows the two variants I&#39;ve ma=
de.<br>

<br>
Although I still like the elegance of using o-rings, the simplest way to pu=
t a suitable groove for the o-ring requires a $40 annular cutter that I don=
&#39;t know I&#39;d ever have another use for. =A0I suppose that I could re=
cover the cost of the tool, if enough other people wanted to buy such a par=
t, but it also sounds like a lot of folks here are moving away from the bed=
 mount. =A0So, I&#39;m taking the KIS route.<br>

<br>
Now I have another question. =A0It may be that I just haven&#39;t looked in=
 the right places for the information I want, but I can&#39;t fathom what&#=
39;s going on with the pickup in the second photo. =A0The reason I made the=
 part on the left of photo 1 was to provide clearance for the four disks th=
at are staked into those recesses. =A0What are they there for? =A0There are=
 four galleys leading from the inside of the center hole to the four recess=
es. =A0They look rather like freeze plugs, but the physics looks wrong for =
protecting against overpressure. =A0If I use the spacer on the right, do I =
induce some risk by blocking those disks?<br>

<br>
ADVthanksANCE,<br>
Dale_R<br>
COZY MkIV #0497<br>
Ch. 13 in-progress<br>
<br>--<br>
Homepage: =A0<a href=3D"http://www.flyrotary.com/" target=3D"_blank">http:/=
/www.flyrotary.com/</a><br>
Archive and UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/fl=
yrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:81/lists=
/flyrotary/List.html</a><br>
<br></blockquote></div><br><div style=3D"visibility: hidden; left: -5000px;=
 position: absolute; z-index: 9999; padding: 0px; margin-left: 0px; margin-=
top: 0px; overflow: hidden; word-wrap: break-word; color: black; font-size:=
 10px; text-align: left; line-height: 130%;" id=3D"avg_ls_inline_popup">
</div>

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