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Message-ID: <1b4b137c0803260717y715f19a4l441132ddafe97fbf@mail.gmail.com>
Date: Wed, 26 Mar 2008 10:17:50 -0400
From: "Tracy Crook" <tracy@rotaryaviation.com>
Sender: rwstracy@gmail.com
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Oil Change Interval
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No sweat, I'm just paranoid about weight Mark.   Even the thought of putting
an extra couple of bolts on the engine to plug those oil injection holes
bothers me <G>

I do appreciate your concern for the gearbox since I worry about each and
every one that goes out.  I had to cringe when I saw that setup at the last
Rotary Roundup fly-in with the 275 HP V6 outboard engine & RD-1C.  He used
the engine oiling system to lube the drive but that engine had only 15 psi
and it was 2-stroke oil.

I liked the basic idea (I flew an 135 HP OMC in another life) but a separate
oiling system is needed.
Tracy
On Tue, Mar 25, 2008 at 1:01 PM, Mark Steitle <msteitle@gmail.com> wrote:

> Tracy,
>
> I just don't want to destroy the gearbox because I didn't change the oil
> often enough.  Sounds like a plan.
>
> Mark S.
>
>
> On 3/25/08, Tracy Crook <tracy@rotaryaviation.com> wrote:
> >
> > Lynn's got it right in my view.  If your're looking for a number, I
> > change between 50 and 70 hours using Synthetic.  I go for the 15W - 50
> > Mobile 1 cause it has more Zinc for the gears & bearings than the lighter
> > weights.  Straight 40W  Redline would be even better but I can't get it at
> > Walmart and I'm cheap.
> >
> > BTW, I use a 4 qt sump even on the 20B.  I don't understand the appeal
> > of great big oil pans.  Why carry all that extra weight?    Even if it means
> > changing oil more often, I'd go for a smaller pan.   On a related subject, I
> > get asked all the time about G-forces affecting oil pickup in the pan in an
> > airplane and the need for a deeper, bigger pan.  My standard answer is that
> > your grandmothers station wagon experiences more lateral G than your
> > airplane ever will (unless you happen to be Sean Tucker).
> >
> > Sorry for the sermon, I just got asked that again <G>.
> >
> > Tracy
> >
>

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<div>No sweat, I&#39;m just paranoid about weight Mark.&nbsp;&nbsp; Even the thought of putting an extra couple of bolts on the engine to plug those oil injection holes bothers me &lt;G&gt;</div>
<div>&nbsp;</div>
<div>I&nbsp;do appreciate your concern for the gearbox since I worry about each and every one that goes out.&nbsp; I had to cringe when I saw that setup at the last Rotary Roundup fly-in with the 275 HP V6 outboard engine &amp; RD-1C.&nbsp; He used the engine oiling system to lube the drive but that engine&nbsp;had only 15 psi and it was 2-stroke oil.&nbsp;&nbsp; </div>

<div>&nbsp;</div>
<div>I liked the basic idea (I flew an 135 HP OMC in another life) but a separate oiling system is needed.<br></div>
<div>Tracy<br></div>
<div class="gmail_quote">On Tue, Mar 25, 2008 at 1:01 PM, Mark Steitle &lt;<a href="mailto:msteitle@gmail.com">msteitle@gmail.com</a>&gt; wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>Tracy, </div>
<div>&nbsp;</div>
<div>I just don&#39;t want to destroy the gearbox because I didn&#39;t change the oil often enough.&nbsp; Sounds like a plan.&nbsp; </div>
<div>&nbsp;</div>
<div>Mark S.<br><br>&nbsp;</div>
<div><span class="gmail_quote">On 3/25/08, <b class="gmail_sendername">Tracy Crook</b> &lt;<a href="mailto:tracy@rotaryaviation.com" target="_blank">tracy@rotaryaviation.com</a>&gt; wrote:</span> 
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>Lynn&#39;s got it right in my view.&nbsp; If your&#39;re looking for a number, I change between 50 and 70 hours using Synthetic.&nbsp; I go for the 15W - 50 Mobile 1 cause it has more Zinc for the gears &amp; bearings than the lighter weights.&nbsp; Straight 40W&nbsp; Redline would be even better but I can&#39;t get it at Walmart and I&#39;m cheap.</div>

<div>&nbsp;</div>
<div>BTW, I use a 4 qt sump even on the 20B.&nbsp; I don&#39;t understand the appeal of great big oil pans.&nbsp; Why carry all that extra weight?&nbsp;&nbsp;&nbsp; Even if it means changing oil more often, I&#39;d go for a smaller pan.&nbsp;&nbsp; On a related subject, I get asked all the time about G-forces affecting oil pickup in the pan in an airplane and the need for a deeper, bigger pan.&nbsp; My standard answer is that your grandmothers station wagon experiences more lateral G than your airplane ever will (unless you happen to be Sean Tucker).&nbsp; </div>

<div>&nbsp;</div>
<div>Sorry for the sermon, I just got asked that again &lt;G&gt;.</div>
<div>&nbsp;</div><span>
<div>Tracy<br></div></span></blockquote></div></blockquote></div>

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