wr= ote: > ** > > Mark,**** > > This would not be happening if they would replace those outdated technolo= gy > engines with a Mazda 20B! :>)**** > > ** ** > > Bill B**** > > ** ** > ------------------------------ > > *From:* **Lancair Mailing List** [mailto:lml@lancaironline.net] *On Behal= f > Of *Steve Colwell > *Sent:* Wednesday, July 06, 2011 2:05 PM > *To:* lml@lancaironline.net > *Subject:* [LML] another Lancair**** > > ** ** > > ** ** > > *I would sure would like to know why all of these "certified engines" are > quitting on takeoff. * > > * * > > *Mark S. * > > Maybe the engine driven fuel pump is failing. We are running low boost > continuously in case the engine pump fails and to address fuel pressure > issues at altitude, hot fuel, vapor lock and other problems. **** > > I understand the engine will not make full power on low boost (reduce > manifold pressure and settle for less power?) **** > > Or, it might quit if high boost is on and the mixture is not adjusted. = * > *** > > Since engine driven pump failure, heat and altitude all affect fuel > delivery, it would seem using the low boost continuously could solve or m= ake > these problems manageable. **** > > Dr. Lyle Koen did our last two physicals. He was a very likeable guy who > built one of the early IV=92s and had over 1000 hours on it. We talked t= o him > about joining LOBO and coming to the Branson Fly-In. **** > > Given the more knowledgeable than usual witness account, could training > have changed this outcome?**** > > Steve Legacy IO550**** > > ** ** > --20cf3054a4c39dae4b04a7839fd3 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Bill,=A0

I agree, but I really didn't want this trag= ic event to turn into another rotary vs. piston dialog. =A0Hypothetically, = if these failures are due to some undetermined defect in the fuel system de= sign, it could be all our problem. =A0

As for this most recent incident, the thought had enter= ed my mind that it has been very hot here in Texas (July set a new record f= or high temps), so could this have been a vapor lock incident? =A0Who knows= ? =A0Would an investigation be able to determine an engine stoppage due to = vapor lock after an accident?=A0=A0I hope he had a datalogger on board. =A0= We'll just have to wait for the final report. =A0

But what about all of the other previous fatal crashes?= =A0Has anyone cataloged those looking for a common cause? =A0If someone ha= s, I would sure like to see the data.

Mark =A0
=

On Thu, Jul 7, 2011 at 4:59 PM, Bill Bradburry <= span dir=3D"ltr"><bbradburry= @bellsouth.net> wrote:

Mark,

This would not be = happening if they would replace those outdated technology engines with a Mazda 20B!=A0 :>)

=A0<= /span>

Bill B

=A0<= /span>

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Steve Colwell
Sent: Wednesday, July 06, 20= 11 2:05 PM
To: lml@lancaironline.net
Subject: [LML] another Lanca= ir

=A0

=A0

I would sure would like to know= why all of these "certified engines" are quitting on takeoff. =A0<= /u>

=A0=

= Mark S.=A0

Maybe the engine driven fuel pump is failing.=A0 We are running low boost continuously in case the engine pump fails and to address fuel pressure iss= ues at altitude, hot fuel, vapor lock and other problems. =A0

I understand the engine will not make full power on low boost (reduce manifol= d pressure and settle for less power?)=A0 =A0

Or, it might quit if high boost is on and the mixture is not adjusted.=A0 =A0

Since engine driven pump failure, heat and altitude all affect fuel delivery, it would seem using the low boost continuously could solve or make these probl= ems manageable. =A0

Dr. Lyle Koen did our last two physicals.=A0 He was a very likeable guy who built one of the early IV=92s and had over 1000 hours on it.=A0 We talked to him about joining LOBO and coming to the Branson Fly-In.=A0

Given the more knowledgeable than usual witness account, could training have chan= ged this outcome?

Steve=A0 Legacy IO550

=A0

--20cf3054a4c39dae4b04a7839fd3--