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Date: Mon, 4 Jul 2011 13:28:06 -0500
Message-ID: <CAHh3jbMNQfXbrOcy=mC5QyHKsAsF9ZPkFEMkGCxHR6=186YETg@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Crossover idea
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Kelly,

I don't think it really matters as long as it is on the high pressure side
of the pumps.  Assuming you have a return system, any air in the system wil=
l
quickly be purged.  I have dual pumps and dual filters, all connected in
parallel.  I put my "T" at the point where the two lines go back to one
line.  The other end is tied back into the return line.

Best I recall, the orifice is about .020".  I used a motorcycle carb jet.
 It was just the right size for me to tap threads into the "T" fitting and
then screw the jet directly into the fitting.

Mark

On Mon, Jul 4, 2011 at 10:00 AM, Kelly Troyer <keltro@att.net> wrote:

> Doug,
>
>    Bypass can be installed anywhere between the pressure and return lines
> but I (and I believe
> Mark did) would place the bypass close to the fuel rails and injectors in
> order to purge air from
> as much of the pressure line as possible in the event of a tank run dry
> and a air lock preventing
> the pump (s) from priming...........IMHO
>
> Kelly Troyer
> *"DYKE DELTA JD2" (Eventually)*
> "13B ROTARY"_ Engine
> "RWS"_RD1C/EC2/EM2
> "MISTRAL"_Backplate/Oil Manifold
> "TURBONETICS"_TO4E50 Turbo
>
>  *From:* "dlomheim@aol.com" <dlomheim@aol.com>
> *To:* keltro@att.net
> *Sent:* Monday, July 4, 2011 9:32 AM
> *Subject:* Crossover idea
>
> Kelly; I remember reading about this before a few yrs ago but haven't
> considered  it since.  Practicly speaking how are the fellas laying this =
out
> and what size fuel line and fittings are they using?  -4 if I remember ri=
ght
> from a few yrs ago...but here do they TEE it?  Right after the pumps to
> ensure fuel fills the pumps again if run dry I'd suppose.  We just got a =
new
> roof on our house and I've about finished a bathroom remodel so now will
> begin backyard landscaping and pool replastering...still hope to work on =
a/c
> again in Sept - Dec when hanger cools off!
> Sent on the Sprint=AE Now Network from my BlackBerry=AE
>
>

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Kelly,=A0<div><br></div><div>I don&#39;t think it really matters as long as=
 it is on the high pressure side of the pumps. =A0Assuming you have a retur=
n system, any air in the system will quickly be purged. =A0I have dual pump=
s and dual filters, all connected in parallel. =A0I put my &quot;T&quot; at=
 the point where the two lines go back to one line. =A0The other end is tie=
d back into the return line. =A0</div>
<div><br></div><div>Best I recall, the orifice is about .020&quot;. =A0I us=
ed a motorcycle carb jet. =A0It was just the right size for me to tap threa=
ds into the &quot;T&quot; fitting and then screw the jet directly into the =
fitting. =A0</div>
<div><br></div><div>Mark<br><br><div class=3D"gmail_quote">On Mon, Jul 4, 2=
011 at 10:00 AM, Kelly Troyer <span dir=3D"ltr">&lt;<a href=3D"mailto:keltr=
o@att.net">keltro@att.net</a>&gt;</span> wrote:<br><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex;">
<div><div style=3D"color:#000;background-color:#fff;font-family:arial, helv=
etica, sans-serif;font-size:12pt"><div><span>Doug,</span></div>
<div><span></span>=A0</div>
<div><span>=A0=A0 Bypass can be installed anywhere between the pressure and=
 return lines but I (and I believe</span></div>
<div><span>Mark did) would place the bypass close to the fuel rails and inj=
ectors=A0in order to purge air from </span></div>
<div><span>as much of </span><span>the pressure line as possible in the eve=
nt of a tank run dry and a air lock preventing</span></div>
<div><span>the pump (s) from priming...........IMHO</span></div>
<div></div>
<div>=A0</div>
<div>Kelly Troyer<br><b><font size=3D"4">&quot;DYKE DELTA JD2&quot;</font> =
<font size=3D"1">(Eventually)</font></b></div>
<div>&quot;13B ROTARY&quot;_ Engine<br>&quot;RWS&quot;_RD1C/EC2/EM2<br>&quo=
t;MISTRAL&quot;_Backplate/Oil Manifold</div>
<div>&quot;TURBONETICS&quot;_TO4E50 Turbo</div>
<div><br></div>
<div style=3D"font-family:arial, helvetica, sans-serif;font-size:12pt">
<div style=3D"font-family:times new roman, new york, times, serif;font-size=
:12pt"><font size=3D"2" face=3D"Arial">
<div style=3D"border-bottom:#ccc 1px solid;border-left:#ccc 1px solid;paddi=
ng-bottom:0px;line-height:0;margin:5px 0px;padding-left:0px;padding-right:0=
px;min-height:0px;font-size:0px;border-top:#ccc 1px solid;border-right:#ccc=
 1px solid;padding-top:0px" readonly>
</div><b><span style=3D"font-weight:bold">From:</span></b> &quot;<a href=3D=
"mailto:dlomheim@aol.com" target=3D"_blank">dlomheim@aol.com</a>&quot; &lt;=
<a href=3D"mailto:dlomheim@aol.com" target=3D"_blank">dlomheim@aol.com</a>&=
gt;<br>
<b><span style=3D"font-weight:bold">To:</span></b> <a href=3D"mailto:keltro=
@att.net" target=3D"_blank">keltro@att.net</a><br><b><span style=3D"font-we=
ight:bold">Sent:</span></b> Monday, July 4, 2011 9:32 AM<br><b><span style=
=3D"font-weight:bold">Subject:</span></b> Crossover idea<br>
</font><br>Kelly; I remember reading about this before a few yrs ago but ha=
ven&#39;t considered=A0 it since.=A0 Practicly speaking how are the fellas =
laying this out and what size fuel line and fittings are they using?=A0 -4 =
if I remember right from a few yrs ago...but here do they TEE it?=A0 Right =
after the
 pumps to ensure fuel fills the pumps again if run dry I&#39;d suppose.=A0 =
We just got a new roof on our house and I&#39;ve about finished a bathroom =
remodel so now will begin backyard landscaping and pool replastering...stil=
l hope to work on a/c again in Sept - Dec when hanger cools off!<br>
Sent on the Sprint=AE Now Network from my BlackBerry=AE<br><br></div></div>=
</div></div></blockquote></div><br></div>

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