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In-Reply-To: <list-5066484@logan.com>
References: <list-5066484@logan.com>
Date: Thu, 28 Jul 2011 09:55:34 -0500
Message-ID: <CAHh3jbP8MDQiG0dzuoJ=FgAa1VceNsT5xyfAd4_57z8yuHmeTg@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Kitplanes Article - Safety is no Accident
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=0023545bddec63d93004a9225b2c

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There's an insert (pg 30) that discusses a redrive failure in a Mustang
II/GM V-8 Conversion.  It reads, "The V-8 was connected to a propeller-speed
reducer by a coupling.  Examination of the wreckage revealed that the rivets
holding the coupling together failed."  The pilot stated, "A better
inspection of the drive coupling may have caught this problem."

Preflight those flexplates and psru adapter plates guys.

Mark

On Thu, Jul 28, 2011 at 9:21 AM, ben haas <stol83001@live.com> wrote:

>  Great article for sure.....
>
> The introduction picture is kool too.  <GG>
>
> Ben Haas
> www.haaspowerair.com
>
>
>  ------------------------------
> To: flyrotary@lancaironline.net
> Date: Wed, 27 Jul 2011 16:27:51 -0500
> From: msteitle@gmail.com
> Subject: [FlyRotary] Kitplanes Article - Safety is no Accident
>
>
> There was an article in the February 2011 issue of Kitplanes titled,
> "Safety is no Accident", by Ron Wanttaja.  In light of the recent flexplate
> failures, I found it interesting that it highlights two areas where
> automotive engines tend to fail, the cooling system and the gear reduction
> unit.  To quote, "Note that auto conversions have a higher accident rate
> right where you would expect it--in engine cooling and in the systems that
> convert engine power to a slower speed for a propeller or helicopter
> rotor."  Seems that we've hit on one of the primary failure modes
> here.  According to Ron's calculations, the accident rate for auto engine
> homebuilts was 23% higher than for homebuilts with traditional engines.  The
> rotary had the fewest total accidents, but the rotary also has the fewest
> number of a/c flying.  This is a well written article that should be on
> everyone's reading list.
>
> Note:  Mr. Wanttaja is a systems engineer, engaged in satellite
> orbit/constellation design and analysis, launch vehicle and onboard
> propulsion system trades, and operations concepts for space systems.  He
> worked on the early design studies for the International Space Station.
>
> Mark
>
>
>
>

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Content-Type: text/html; charset=ISO-8859-1
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There&#39;s an insert (pg 30) that discusses a redrive failure in a Mustang=
 II/GM V-8 Conversion. =A0It reads, &quot;The V-8 was connected to a propel=
ler-speed reducer by a coupling. =A0Examination of the wreckage revealed th=
at the rivets holding the coupling together failed.&quot; =A0The pilot stat=
ed, &quot;A better inspection of the drive coupling may have caught this pr=
oblem.&quot;<div>
<br></div><div>Preflight those flexplates and psru adapter plates guys.</di=
v><div><br></div><div>Mark<br><br><div class=3D"gmail_quote">On Thu, Jul 28=
, 2011 at 9:21 AM, ben haas <span dir=3D"ltr">&lt;<a href=3D"mailto:stol830=
01@live.com">stol83001@live.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">



<div><div dir=3D"ltr">
Great article for sure.....<br>
=A0<br>
The introduction picture is kool too.=A0 &lt;GG&gt;<br><br><font size=3D"4"=
>Ben Haas</font><br><font size=3D"4"><a href=3D"http://www.haaspowerair.com=
" target=3D"_blank">www.haaspowerair.com</a></font><br><br>=A0<br>
<div>

<hr>
To: <a href=3D"mailto:flyrotary@lancaironline.net" target=3D"_blank">flyrot=
ary@lancaironline.net</a><br>Date: Wed, 27 Jul 2011 16:27:51 -0500<br>From:=
 <a href=3D"mailto:msteitle@gmail.com" target=3D"_blank">msteitle@gmail.com=
</a><br>
Subject: [FlyRotary] Kitplanes Article - Safety is no Accident<div class=3D=
"im"><br><br>
<div>There was an article in the February 2011 issue of Kitplanes titled, &=
quot;Safety is no Accident&quot;, by Ron Wanttaja.=A0 In light of the recen=
t=A0flexplate failures,=A0I found it interesting that it highlights two are=
as where automotive engines=A0tend to fail, the cooling system and the gear=
 reduction unit.=A0 To quote, &quot;Note that auto conversions=A0have a hig=
her accident rate right where you would expect it--in engine cooling and in=
 the systems that convert engine power to a slower speed for a propeller or=
 helicopter rotor.&quot;=A0 Seems=A0that we&#39;ve=A0hit on=A0one of the pr=
imary failure modes here.=A0=A0According to Ron&#39;s calculations, the acc=
ident rate for=A0auto engine homebuilts was=A023%=A0higher than for homebui=
lts with traditional engines.=A0 The rotary had the fewest total accidents,=
 but the rotary also has the fewest number of a/c flying.=A0 This is a well=
=A0written article that should be on everyone&#39;s reading list.=A0 </div>

<div>=A0</div>
<div>Note:=A0 Mr. Wanttaja is a systems engineer, engaged in satellite orbi=
t/constellation design and analysis, launch vehicle and onboard propulsion =
system trades, and operations concepts for space systems.=A0 He worked on t=
he early design studies for the International Space Station.=A0 </div>

<div>=A0</div>
<div>Mark </div>
<div>=A0</div>
<div>=A0</div>
<div>=A0</div></div></div> 		 	   		  </div></div>
</blockquote></div><br></div>

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