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Subject: Re: [LML] Cooling firewall forward components
From: Bryan Wullner <vonjet@gmail.com>
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
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I have a cooling shroud on my mechanical fuel pump on my engine.



On Mon, Jan 24, 2011 at 11:54 AM, <rwolf99@aol.com> wrote:

> Scott -
>
> You are right.  I forgot that the engine compartment of my tightly-cowled
> Lancair is probably hotter than my old Cessna.  So a cooling blast tube to
> the regulator area is a good idea.  I'll do that, as it would be a pain to
> move the regulator now (not impossible, just a pain).  Not so worried about
> the battery but maybe I should be.  The failure mode there is more benign
> (short battery life) so I may just take that as it comes.
>
> I had been concerned about cooling of the Dukes pump and the gascolator,
> which are both on the hot side of the firewall.  I bought a cooling shroud
> from Lancair but it was designed for the Lancair 4 fuel pump, I think, as it
> didn't come close to fitting.  If anyone has a suggestion for a pre-made
> part I'd like to hear it.  I'm not very talented when it comes to sheet
> metal work.
>
> Finally, I have recently seen cooling shrouds for the engine mounted
> mechanical fuel pump in the catalogs, but I haven't seen one on an
> airplane.  What do y'all think about those?  Do we need them?
>
> As for electrics, I forgot to mention that my hydraulic pump has its own
> breaker.  When you pull the breaker it also cuts power to the Bosch relays.
> And I have a separate breaker for the pitot heat.  Everything else goes
> through the Control Vision power distribution system.  So I think I've met
> your criteria of everything having either a switch or a breaker to turn it
> off, but nothing has both except for the pitot heat.
>
> Thanks for the comments, guys!
>
> - Rob Wolf
>
>

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I have a cooling shroud on my mechanical fuel pump on my engine.=A0<div><br=
></div><div><br><br><div class=3D"gmail_quote">On Mon, Jan 24, 2011 at 11:5=
4 AM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:rwolf99@aol.com">rwolf99@aol=
.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;"><font color=3D"black" size=3D"2" face=3D"ar=
ial">
<div>Scott -</div>


<div>=A0</div>


<div>You are right.=A0 I forgot that the engine compartment of my tightly-c=
owled Lancair is probably hotter than my old Cessna.=A0 So=A0a cooling blas=
t tube to the regulator area is a good idea.=A0 I&#39;ll do that, as it wou=
ld be a pain to move the regulator now (not impossible, just a pain).=A0 No=
t so worried about the battery but maybe I should be.=A0 The failure mode t=
here is more benign (short battery life) so I may just take that as it come=
s.</div>



<div>=A0</div>


<div>I had been concerned about cooling of the Dukes pump and the gascolato=
r, which are both on the hot side of the firewall.=A0 I bought a cooling sh=
roud from Lancair but it was designed for the Lancair 4 fuel pump, I think,=
 as it didn&#39;t come close to fitting.=A0 If anyone has a suggestion for =
a pre-made part I&#39;d like to hear it.=A0 I&#39;m not very talented when =
it comes to sheet metal work.</div>



<div>=A0</div>


<div>Finally, I have recently seen cooling shrouds for the engine mounted m=
echanical fuel pump in the catalogs, but I haven&#39;t seen one on an airpl=
ane.=A0 What do y&#39;all think about those?=A0 Do we need them?</div>


<div>=A0</div>


<div>As for electrics, I forgot to mention that my hydraulic pump has its o=
wn breaker.=A0 When you pull the breaker it also cuts power to the Bosch re=
lays.=A0 And I have a separate breaker for the pitot heat.=A0 Everything el=
se goes through the Control Vision power distribution system.=A0 So I think=
 I&#39;ve met your criteria of everything having either a switch or a break=
er to turn it off, but nothing has both except for the pitot heat.</div>



<div>=A0</div>


<div>Thanks for the comments, guys!</div>


<div>=A0</div>


<div>- Rob Wolf<br>
<br>
</div>


<div style=3D"clear:both"></div>
</font>
</blockquote></div><br></div>

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