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Message-ID: <1c23473f0707071254o256393d1o73f3c0b4dcc21045@mail.gmail.com>
Date: Sat, 7 Jul 2007 12:54:08 -0700
From: "David Leonard" <wdleonard@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Stock Turbo
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The main thing that you should know...  The stock turbo will fail much
sooner than an appropriate turbo.  Overspeeding and continuous high heat are
the culprits.  I was able to get 70 hours out of my stock (2nd gen single)
turbo.  That was mostly light duty turbo normalizing.  I don't think anyone
else even got that many hours out of the stock turbo.  The twin stock turbos
are particularly not suited for aircraft use because of smaller size.  The
twin system is meant to minimize turbo lag, not provide optimium
performance.

I am now using most of the stock components: manifold, exhaust housing, oil
and water fittings.  But the innards of the turbo are very different.

Big and open are important aspects for the hot side of the turbo.

-- 
David Leonard

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

On 7/7/07, Joe Ewen <jewen@comporium.net> wrote:
>
>  Steve, Dave, or anyone else using the stock turbo(s)
>
> On my 20B installation I am considering using the stock turbo system.  I
> would only be using low boost levels.  I have a couple of questions for
> anyone who is using the stock turbos.  Were your systems twins turbos?  Did
> you leave both turbos in place?  Is over speeding an issue for our mode of
> operation?  What else should I know about using the stock turbos?
>
> Thanks,
> Joe
>

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<div>The main thing that you should know...&nbsp; The stock turbo will fail much sooner than an appropriate turbo.&nbsp; Overspeeding and continuous high heat are the culprits.&nbsp; I was able to get 70 hours out of my stock (2nd gen single) turbo.&nbsp; That was mostly light duty turbo normalizing.&nbsp; I don&#39;t think anyone else even got that many hours out of the stock turbo.&nbsp; The twin stock turbos are particularly not suited for aircraft use because of smaller size.&nbsp; The twin system is meant to minimize turbo lag, not provide optimium performance.
</div>
<div>&nbsp;</div>
<div>I am now using most of the stock components: manifold, exhaust housing, oil and water fittings.&nbsp; But the innards of the turbo are very different.</div>
<div>&nbsp;</div>
<div>Big and open are important aspects for the hot side of the turbo.</div>
<div>&nbsp;</div>
<div>-- <br>David Leonard<br><br>Turbo Rotary RV-6 N4VY<br><a href="http://N4VY.RotaryRoster.net">http://N4VY.RotaryRoster.net</a><br><a href="http://RotaryRoster.net">http://RotaryRoster.net</a> <br>&nbsp;</div>
<div><span class="gmail_quote">On 7/7/07, <b class="gmail_sendername">Joe Ewen</b> &lt;<a href="mailto:jewen@comporium.net">jewen@comporium.net</a>&gt; wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Steve, Dave, or anyone else using the stock turbo(s)</font></div>
<div><font face="Arial" size="2"></font>&nbsp;</div>
<div><font face="Arial" size="2">On my 20B installation I am considering using the stock turbo system.&nbsp; I would only be using low boost levels.&nbsp; I have a couple of questions for anyone who is using the stock turbos.&nbsp; Were your systems twins turbos?&nbsp; Did you leave both turbos in place?&nbsp; Is over speeding an issue for our mode of operation?&nbsp; What else should I know about using the stock turbos?
</font></div>
<div><font face="Arial" size="2"></font>&nbsp;</div>
<div><font face="Arial" size="2">Thanks,</font></div>
<div><font face="Arial" size="2">Joe</font></div></div></blockquote></div><br><br clear="all"><br>

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