Today's Message Index:
----------------------
1. 12:08 PM - Re: Pulsar-List Digest: 9 Msgs - 10/03/17 (Mark Fox)
2. 12:08 PM - Re: Pulsar-List Digest: 9 Msgs - 10/03/17 (Mark Fox)
3. 12:17 PM - Re: Pulsar-List Digest: 9 Msgs - 10/03/17 (Mark Fox)
4. 12:17 PM - Re: Pulsar-List Digest: 9 Msgs - 10/03/17 (Mark Fox)
5. 01:10 PM - Re: Re: Pulsar-List Digest: 9 Msgs - 10/03/17 (Bernard Wilder)
Message 1
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| Subject: | Re: Pulsar-List Digest: 9 Msgs - 10/03/17 |
Fyi i have had 3 fuel pump failures in 21 years. All of them allow fuel
pass through. You only know its not working when on start up listen
carefully for the line to fill when you turn it on prior to start
On Wed, Oct 4, 2017 at 12:12 AM Pulsar-List Digest Server <
pulsar-list@matronics.com> wrote:
> *
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
> Today's complete Pulsar-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the Pulsar-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-10-03&Archive=Pulsar
>
> Text Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-10-03&Archive=Pulsar
>
>
> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
>
>
> ----------------------------------------------------------
> Pulsar-List Digest Archive
> ---
> Total Messages Posted Tue 10/03/17: 9
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 07:56 AM - Canyon or Box Canyon Turn ? (Ron Koval)
> 2. 12:11 PM - Parallel fuel path around Facet pump (Jim Fillman)
> 3. 12:33 PM - Re: Parallel fuel path around Facet pump (Dennis Adams)
> 4. 12:42 PM - Re: Parallel fuel path around Facet pump (Ray Pulsar
> III/3300)
> 5. 01:19 PM - Re: Parallel fuel path around Facet pump (Sonja
> Englert)
> 6. 02:04 PM - Re: Parallel fuel path around Facet pump (Dennis Tubbs)
> 7. 02:40 PM - Re: Parallel fuel path around Facet pump (Dennis Adams)
> 8. 05:48 PM - Re: Parallel fuel path around Facet pump (Ray Wilhelm)
> 9. 08:53 PM - Re: Parallel fuel path around Facet pump (Bob Heiser)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 07:56:52 AM PST US
> From: Ron Koval <ronko@att.net>
> Subject: Pulsar-List: Canyon or Box Canyon Turn ?
>
> Pulsar friends,
> Has anybody performed a canyon or box canyon turn in a Pulsar?
> I was taught the maneuver when I had a Grumman Cheetah which was=C2-restr
> icted =C2-from acrobat maneuvers or spins but the biannual wings program
> instructor indicated that the canyon turn when performed properly produces
> no more stress on the aircraft than a stall would.
> Note, I don't necessarily need this skill where I fly, but I do remember wh
> en I learned how to do it, it was great skill to know.
> Best regards,
> RonkoN1037L
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 12:11:38 PM PST US
> From: "Jim Fillman" <pilot623@gmail.com>
> Subject: Pulsar-List: Parallel fuel path around Facet pump
>
> Since the fly-in, I've been mulling the issue that caused the loss of Bob
> Heiser's Pulsar since all fuel in my plane flows through the Facet
> auxiliary
> fuel pump. In trying to visualize what a parallel path would look like, I
> picture Tees on the upstream and downstream sides of the Facet with a check
> valve that only allows fuel to flow towards the engine. Am I thinking this
> correctly? Can anyone offer a specific recommendation for the check valve?
> Is a check valve really needed? I have no fuel return to the tanks.
>
>
> Jim
>
> N623JF
>
>
> ________________________________ Message 3
> _____________________________________
>
>
> Time: 12:33:06 PM PST US
> From: Dennis Adams <ghf4986@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Jim,
>
> A couple of things, the Facet fuel pump requires a fuel filter upstream
> and t
> hey recommend a certain micron size. Unfortunately i can not tell you
> what i
> t is from memory.
>
> I bypassed the pump with a couple of tees and a check valve, no special
> chec
> k valve since it is low pressure.
>
> I bought a manifold and jet from Spruce and re-routed the fuel lines after
> m
> ounting the manifold in the engine compartment. =46rom the manifold and
> jet
> i ran a line to the upside of the fuel selector switch, no need to run
> the r
> eturn to the tank.
>
> The return is primarily to stop vapor lock.
>
> Dennis Adams
>
> Sent from an IPad
>
> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>
> Since the fly-in, I=99ve been mulling the issue that caused the loss o
> f Bob Heiser=99s Pulsar since all fuel in my plane flows through the Fa
> cet auxiliary fuel pump. In trying to visualize what a parallel path would
> l
> ook like, I picture Tees on the upstream and downstream sides of the Facet
> w
> ith a check valve that only allows fuel to flow towards the engine. Am I
> thi
> nking this correctly? Can anyone offer a specific recommendation for the
> che
> ck valve? Is a check valve really needed? I have no fuel return to the
> tanks
> ..
>
> Jim
> N623JF
>
> ________________________________ Message 4
> _____________________________________
>
>
> Time: 12:42:52 PM PST US
> From: "Ray Pulsar III/3300" <rwilhelm@dc.rr.com>
> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>
> That is exactly what I did when I built mine 20 years ago, Jim. At that tim
> e there were some Facet pumps that could fail closed. Not so any more with
> the newer ones. So they say.
> I installed a very low crack pressure check valve in the circuit you descri
> bed. 3/8 tube size. I had one from when I worked for a company that made th
> em. I am sure you can buy one from ebay. Make sure it is aircraft and not a
> uto or industrial. They don=99t make them with very low crack pressur
> e (8 =9C water max) and zero leakage in the check direction.
>
> Ray
>
> Sent from Mail for Windows 10
>
> From: Jim Fillman
> Sent: Tuesday, October 3, 2017 12:10 PM
> Subject: Pulsar-List: Parallel fuel path around Facet pump
>
> Since the fly-in, I=99ve been mulling the issue that caused the loss
> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
> Facet auxiliary fuel pump. In trying to visualize what a parallel path wou
> ld look like, I picture Tees on the upstream and downstream sides of the Fa
> cet with a check valve that only allows fuel to flow towards the engine. Am
> I thinking this correctly? Can anyone offer a specific recommendation for
> the check valve? Is a check valve really needed? I have no fuel return to t
> he tanks.
>
> Jim
> N623JF
>
>
> ________________________________ Message 5
> _____________________________________
>
>
> Time: 01:19:22 PM PST US
> From: Sonja Englert <paqs345@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> My Facet fuel pump failed this year, but all that happened was that it did
> not pump fuel anymore when turned on. Fuel would still flow through it. I
> do not have a bypass.
>
> One note on vapor return lines: they may do exactly what they are called,
> return vapor. It would be stupid to return vapor to anywhere but the top of
> the tank.
>
> Sonja
>
> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>
> > Since the fly-in, I=99ve been mulling the issue that caused the los
> s of Bob
> > Heiser=99s Pulsar since all fuel in my plane flows through the Face
> t
> > auxiliary fuel pump. In trying to visualize what a parallel path would lo
> ok
> > like, I picture Tees on the upstream and downstream sides of the Facet wi
> th
> > a check valve that only allows fuel to flow towards the engine. Am I
> > thinking this correctly? Can anyone offer a specific recommendation for t
> he
> > check valve? Is a check valve really needed? I have no fuel return to the
> > tanks.
> >
> >
> > Jim
> >
> > N623JF
> >
>
> ________________________________ Message 6
> _____________________________________
>
>
> Time: 02:04:43 PM PST US
> From: Dennis Tubbs <dennistubbs7@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Thanks Sonja, for sharing your experience here. Other comments had be
> concerned what might happen if my Facet pump failed.
>
> On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
>
> > My Facet fuel pump failed this year, but all that happened was that it di
> d
> > not pump fuel anymore when turned on. Fuel would still flow through it. I
> > do not have a bypass.
> >
> > One note on vapor return lines: they may do exactly what they are called,
> > return vapor. It would be stupid to return vapor to anywhere but the top
> of
> > the tank.
> >
> > Sonja
> >
> > On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
> >
> >> Since the fly-in, I=99ve been mulling the issue that caused the lo
> ss of Bob
> >> Heiser=99s Pulsar since all fuel in my plane flows through the Fac
> et
> >> auxiliary fuel pump. In trying to visualize what a parallel path would l
> ook
> >> like, I picture Tees on the upstream and downstream sides of the Facet w
> ith
> >> a check valve that only allows fuel to flow towards the engine. Am I
> >> thinking this correctly? Can anyone offer a specific recommendation for
> the
> >> check valve? Is a check valve really needed? I have no fuel return to th
> e
> >> tanks.
> >>
> >>
> >>
> >> Jim
> >>
> >> N623JF
> >>
> >
> >
>
> ________________________________ Message 7
> _____________________________________
>
>
> Time: 02:40:44 PM PST US
> From: Dennis Adams <ghf4986@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Its vapor pressure, no pressure, no vapor!
>
> Sent from an IPad
>
> On Oct 3, 2017, at 3:03 PM, Dennis Tubbs <dennistubbs7@gmail.com> wrote:
>
> Thanks Sonja, for sharing your experience here. Other comments had be
> concer
> ned what might happen if my Facet pump failed.
>
> > On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
> > My Facet fuel pump failed this year, but all that happened was that it
> did
> not pump fuel anymore when turned on. Fuel would still flow through it. I
> d
> o not have a bypass.
> >
> > One note on vapor return lines: they may do exactly what they are
> called, r
> eturn vapor. It would be stupid to return vapor to anywhere but the top of
> t
> he tank.
> >
> > Sonja
> >
> >> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
> wrote:
> >> Since the fly-in, I=99ve been mulling the issue that caused the los
> s of Bob Heiser=99s Pulsar since all fuel in my plane flows through th
> e Facet auxiliary fuel pump. In trying to visualize what a parallel path
> wou
> ld look like, I picture Tees on the upstream and downstream sides of the
> Fac
> et with a check valve that only allows fuel to flow towards the engine. Am
> I
> thinking this correctly? Can anyone offer a specific recommendation for
> the
> check valve? Is a check valve really needed? I have no fuel return to the
> t
> anks.
> >>
> >>
> >>
> >> Jim
> >>
> >> N623JF
> >>
> >
>
>
> ________________________________ Message 8
> _____________________________________
>
>
> Time: 05:48:12 PM PST US
> From: Ray Wilhelm <rwilhelm25@gmail.com>
> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>
> Please be advised that the crack pressure of the ASP check valve is not lis
> ted. If it is not less then 8 inches of water, do not use it. The high crac
> k pressure of typical Check Valve will cause the engine driven pump to vapo
> r lock the first time it is needed at high temps and altitude. Especially w
> ith auto gas. You do not want the pump to have to suck against the typical
> 2 psi crack pressure. Neither do you want it to leak at all in normal opera
> tion. It is like your heart with a very bad murmur. The Facet pump will jus
> t be putting the fuel back to its own inlet.
>
> Ray
>
> Sent from Mail for Windows 10
>
> From: Dennis Adams
> Sent: Tuesday, October 3, 2017 12:36 PM
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Jim,
>
> A couple of things, the Facet fuel pump requires a fuel filter upstream and
> they recommend a certain micron size. =C2-Unfortunately i can not tell y
> ou what it is from memory. =C2-
>
> I bypassed the pump with a couple of tees and a check valve, no special che
> ck valve since it is low pressure.
>
> I bought a manifold and jet from Spruce and re-routed the fuel lines after
> mounting the manifold in the engine compartment. =C2-From the manifold an
> d jet i ran a line to the upside of the fuel selector switch, no need to ru
> n the return =C2-to the tank.
>
> The return is primarily to stop vapor lock.
>
> Dennis Adams=C2-
> Sent from an IPad=C2-
>
> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
> Since the fly-in, I=99ve been mulling the issue that caused the loss
> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
> Facet auxiliary fuel pump. In trying to visualize what a parallel path wou
> ld look like, I picture Tees on the upstream and downstream sides of the Fa
> cet with a check valve that only allows fuel to flow towards the engine. Am
> I thinking this correctly? Can anyone offer a specific recommendation for
> the check valve? Is a check valve really needed? I have no fuel return to t
> he tanks.
> =C2-
> Jim
> N623JF
>
>
> ________________________________ Message 9
> _____________________________________
>
>
> Time: 08:53:32 PM PST US
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
> From: Bob Heiser <w7ikt@fly-web.us>
>
>
> I have seen diagrams just like you describe. That is the way I would do
> it if i built or owned another low wing.
>
>
> On 10/03/2017 02:10 PM, Jim Fillman wrote:
> > I picture Tees on the upstream and downstream sides of the Facet with
> > a check valve that only allows fuel to flow towards the engine
>
> --
> God Bless,
> Bob W7IKT & Carol N5CBQ HeiserI
>
>
Message 2
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|
| Subject: | Re: Pulsar-List Digest: 9 Msgs - 10/03/17 |
Fyi i have had 3 fuel pump failures in 21 years. All of them allow fuel
pass through. You only know its not working when on start up listen
carefully for the line to fill when you turn it on prior to start
On Wed, Oct 4, 2017 at 12:12 AM Pulsar-List Digest Server <
pulsar-list@matronics.com> wrote:
> *
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
> Today's complete Pulsar-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the Pulsar-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-10-03&Archive=Pulsar
>
> Text Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-10-03&Archive=Pulsar
>
>
> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
>
>
> ----------------------------------------------------------
> Pulsar-List Digest Archive
> ---
> Total Messages Posted Tue 10/03/17: 9
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 07:56 AM - Canyon or Box Canyon Turn ? (Ron Koval)
> 2. 12:11 PM - Parallel fuel path around Facet pump (Jim Fillman)
> 3. 12:33 PM - Re: Parallel fuel path around Facet pump (Dennis Adams)
> 4. 12:42 PM - Re: Parallel fuel path around Facet pump (Ray Pulsar
> III/3300)
> 5. 01:19 PM - Re: Parallel fuel path around Facet pump (Sonja
> Englert)
> 6. 02:04 PM - Re: Parallel fuel path around Facet pump (Dennis Tubbs)
> 7. 02:40 PM - Re: Parallel fuel path around Facet pump (Dennis Adams)
> 8. 05:48 PM - Re: Parallel fuel path around Facet pump (Ray Wilhelm)
> 9. 08:53 PM - Re: Parallel fuel path around Facet pump (Bob Heiser)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 07:56:52 AM PST US
> From: Ron Koval <ronko@att.net>
> Subject: Pulsar-List: Canyon or Box Canyon Turn ?
>
> Pulsar friends,
> Has anybody performed a canyon or box canyon turn in a Pulsar?
> I was taught the maneuver when I had a Grumman Cheetah which was=C2-restr
> icted =C2-from acrobat maneuvers or spins but the biannual wings program
> instructor indicated that the canyon turn when performed properly produces
> no more stress on the aircraft than a stall would.
> Note, I don't necessarily need this skill where I fly, but I do remember wh
> en I learned how to do it, it was great skill to know.
> Best regards,
> RonkoN1037L
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 12:11:38 PM PST US
> From: "Jim Fillman" <pilot623@gmail.com>
> Subject: Pulsar-List: Parallel fuel path around Facet pump
>
> Since the fly-in, I've been mulling the issue that caused the loss of Bob
> Heiser's Pulsar since all fuel in my plane flows through the Facet
> auxiliary
> fuel pump. In trying to visualize what a parallel path would look like, I
> picture Tees on the upstream and downstream sides of the Facet with a check
> valve that only allows fuel to flow towards the engine. Am I thinking this
> correctly? Can anyone offer a specific recommendation for the check valve?
> Is a check valve really needed? I have no fuel return to the tanks.
>
>
> Jim
>
> N623JF
>
>
> ________________________________ Message 3
> _____________________________________
>
>
> Time: 12:33:06 PM PST US
> From: Dennis Adams <ghf4986@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Jim,
>
> A couple of things, the Facet fuel pump requires a fuel filter upstream
> and t
> hey recommend a certain micron size. Unfortunately i can not tell you
> what i
> t is from memory.
>
> I bypassed the pump with a couple of tees and a check valve, no special
> chec
> k valve since it is low pressure.
>
> I bought a manifold and jet from Spruce and re-routed the fuel lines after
> m
> ounting the manifold in the engine compartment. =46rom the manifold and
> jet
> i ran a line to the upside of the fuel selector switch, no need to run
> the r
> eturn to the tank.
>
> The return is primarily to stop vapor lock.
>
> Dennis Adams
>
> Sent from an IPad
>
> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>
> Since the fly-in, I=99ve been mulling the issue that caused the loss o
> f Bob Heiser=99s Pulsar since all fuel in my plane flows through the Fa
> cet auxiliary fuel pump. In trying to visualize what a parallel path would
> l
> ook like, I picture Tees on the upstream and downstream sides of the Facet
> w
> ith a check valve that only allows fuel to flow towards the engine. Am I
> thi
> nking this correctly? Can anyone offer a specific recommendation for the
> che
> ck valve? Is a check valve really needed? I have no fuel return to the
> tanks
> ..
>
> Jim
> N623JF
>
> ________________________________ Message 4
> _____________________________________
>
>
> Time: 12:42:52 PM PST US
> From: "Ray Pulsar III/3300" <rwilhelm@dc.rr.com>
> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>
> That is exactly what I did when I built mine 20 years ago, Jim. At that tim
> e there were some Facet pumps that could fail closed. Not so any more with
> the newer ones. So they say.
> I installed a very low crack pressure check valve in the circuit you descri
> bed. 3/8 tube size. I had one from when I worked for a company that made th
> em. I am sure you can buy one from ebay. Make sure it is aircraft and not a
> uto or industrial. They don=99t make them with very low crack pressur
> e (8 =9C water max) and zero leakage in the check direction.
>
> Ray
>
> Sent from Mail for Windows 10
>
> From: Jim Fillman
> Sent: Tuesday, October 3, 2017 12:10 PM
> Subject: Pulsar-List: Parallel fuel path around Facet pump
>
> Since the fly-in, I=99ve been mulling the issue that caused the loss
> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
> Facet auxiliary fuel pump. In trying to visualize what a parallel path wou
> ld look like, I picture Tees on the upstream and downstream sides of the Fa
> cet with a check valve that only allows fuel to flow towards the engine. Am
> I thinking this correctly? Can anyone offer a specific recommendation for
> the check valve? Is a check valve really needed? I have no fuel return to t
> he tanks.
>
> Jim
> N623JF
>
>
> ________________________________ Message 5
> _____________________________________
>
>
> Time: 01:19:22 PM PST US
> From: Sonja Englert <paqs345@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> My Facet fuel pump failed this year, but all that happened was that it did
> not pump fuel anymore when turned on. Fuel would still flow through it. I
> do not have a bypass.
>
> One note on vapor return lines: they may do exactly what they are called,
> return vapor. It would be stupid to return vapor to anywhere but the top of
> the tank.
>
> Sonja
>
> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>
> > Since the fly-in, I=99ve been mulling the issue that caused the los
> s of Bob
> > Heiser=99s Pulsar since all fuel in my plane flows through the Face
> t
> > auxiliary fuel pump. In trying to visualize what a parallel path would lo
> ok
> > like, I picture Tees on the upstream and downstream sides of the Facet wi
> th
> > a check valve that only allows fuel to flow towards the engine. Am I
> > thinking this correctly? Can anyone offer a specific recommendation for t
> he
> > check valve? Is a check valve really needed? I have no fuel return to the
> > tanks.
> >
> >
> > Jim
> >
> > N623JF
> >
>
> ________________________________ Message 6
> _____________________________________
>
>
> Time: 02:04:43 PM PST US
> From: Dennis Tubbs <dennistubbs7@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Thanks Sonja, for sharing your experience here. Other comments had be
> concerned what might happen if my Facet pump failed.
>
> On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
>
> > My Facet fuel pump failed this year, but all that happened was that it di
> d
> > not pump fuel anymore when turned on. Fuel would still flow through it. I
> > do not have a bypass.
> >
> > One note on vapor return lines: they may do exactly what they are called,
> > return vapor. It would be stupid to return vapor to anywhere but the top
> of
> > the tank.
> >
> > Sonja
> >
> > On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
> >
> >> Since the fly-in, I=99ve been mulling the issue that caused the lo
> ss of Bob
> >> Heiser=99s Pulsar since all fuel in my plane flows through the Fac
> et
> >> auxiliary fuel pump. In trying to visualize what a parallel path would l
> ook
> >> like, I picture Tees on the upstream and downstream sides of the Facet w
> ith
> >> a check valve that only allows fuel to flow towards the engine. Am I
> >> thinking this correctly? Can anyone offer a specific recommendation for
> the
> >> check valve? Is a check valve really needed? I have no fuel return to th
> e
> >> tanks.
> >>
> >>
> >>
> >> Jim
> >>
> >> N623JF
> >>
> >
> >
>
> ________________________________ Message 7
> _____________________________________
>
>
> Time: 02:40:44 PM PST US
> From: Dennis Adams <ghf4986@gmail.com>
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Its vapor pressure, no pressure, no vapor!
>
> Sent from an IPad
>
> On Oct 3, 2017, at 3:03 PM, Dennis Tubbs <dennistubbs7@gmail.com> wrote:
>
> Thanks Sonja, for sharing your experience here. Other comments had be
> concer
> ned what might happen if my Facet pump failed.
>
> > On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
> > My Facet fuel pump failed this year, but all that happened was that it
> did
> not pump fuel anymore when turned on. Fuel would still flow through it. I
> d
> o not have a bypass.
> >
> > One note on vapor return lines: they may do exactly what they are
> called, r
> eturn vapor. It would be stupid to return vapor to anywhere but the top of
> t
> he tank.
> >
> > Sonja
> >
> >> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
> wrote:
> >> Since the fly-in, I=99ve been mulling the issue that caused the los
> s of Bob Heiser=99s Pulsar since all fuel in my plane flows through th
> e Facet auxiliary fuel pump. In trying to visualize what a parallel path
> wou
> ld look like, I picture Tees on the upstream and downstream sides of the
> Fac
> et with a check valve that only allows fuel to flow towards the engine. Am
> I
> thinking this correctly? Can anyone offer a specific recommendation for
> the
> check valve? Is a check valve really needed? I have no fuel return to the
> t
> anks.
> >>
> >>
> >>
> >> Jim
> >>
> >> N623JF
> >>
> >
>
>
> ________________________________ Message 8
> _____________________________________
>
>
> Time: 05:48:12 PM PST US
> From: Ray Wilhelm <rwilhelm25@gmail.com>
> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>
> Please be advised that the crack pressure of the ASP check valve is not lis
> ted. If it is not less then 8 inches of water, do not use it. The high crac
> k pressure of typical Check Valve will cause the engine driven pump to vapo
> r lock the first time it is needed at high temps and altitude. Especially w
> ith auto gas. You do not want the pump to have to suck against the typical
> 2 psi crack pressure. Neither do you want it to leak at all in normal opera
> tion. It is like your heart with a very bad murmur. The Facet pump will jus
> t be putting the fuel back to its own inlet.
>
> Ray
>
> Sent from Mail for Windows 10
>
> From: Dennis Adams
> Sent: Tuesday, October 3, 2017 12:36 PM
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>
> Jim,
>
> A couple of things, the Facet fuel pump requires a fuel filter upstream and
> they recommend a certain micron size. =C2-Unfortunately i can not tell y
> ou what it is from memory. =C2-
>
> I bypassed the pump with a couple of tees and a check valve, no special che
> ck valve since it is low pressure.
>
> I bought a manifold and jet from Spruce and re-routed the fuel lines after
> mounting the manifold in the engine compartment. =C2-From the manifold an
> d jet i ran a line to the upside of the fuel selector switch, no need to ru
> n the return =C2-to the tank.
>
> The return is primarily to stop vapor lock.
>
> Dennis Adams=C2-
> Sent from an IPad=C2-
>
> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
> Since the fly-in, I=99ve been mulling the issue that caused the loss
> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
> Facet auxiliary fuel pump. In trying to visualize what a parallel path wou
> ld look like, I picture Tees on the upstream and downstream sides of the Fa
> cet with a check valve that only allows fuel to flow towards the engine. Am
> I thinking this correctly? Can anyone offer a specific recommendation for
> the check valve? Is a check valve really needed? I have no fuel return to t
> he tanks.
> =C2-
> Jim
> N623JF
>
>
> ________________________________ Message 9
> _____________________________________
>
>
> Time: 08:53:32 PM PST US
> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
> From: Bob Heiser <w7ikt@fly-web.us>
>
>
> I have seen diagrams just like you describe. That is the way I would do
> it if i built or owned another low wing.
>
>
> On 10/03/2017 02:10 PM, Jim Fillman wrote:
> > I picture Tees on the upstream and downstream sides of the Facet with
> > a check valve that only allows fuel to flow towards the engine
>
> --
> God Bless,
> Bob W7IKT & Carol N5CBQ HeiserI
>
>
Message 3
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| Subject: | Re: Pulsar-List Digest: 9 Msgs - 10/03/17 |
And 1 mechnical pump leakage replace and 1 complete failure of the
mechnical before they changed that horibble design. Fortunetly they only
both failed once on run up. That time i am sure the electric one failed
before the mechanical because the odds of both at the same time is very
low. That is why i listen very close for the fill sound of the electric
before turning the motor
On Wed, Oct 4, 2017 at 12:07 PM Mark Fox <saafbusiness@gmail.com> wrote:
> Fyi i have had 3 fuel pump failures in 21 years. All of them allow fuel
> pass through. You only know its not working when on start up listen
> carefully for the line to fill when you turn it on prior to start
>
> On Wed, Oct 4, 2017 at 12:12 AM Pulsar-List Digest Server <
> pulsar-list@matronics.com> wrote:
>
>> *
>>
>> =================================================
>> Online Versions of Today's List Digest Archive
>> =================================================
>>
>> Today's complete Pulsar-List Digest can also be found in either of the
>> two Web Links listed below. The .html file includes the Digest formatted
>> in HTML for viewing with a web browser and features Hyperlinked Indexes
>> and Message Navigation. The .txt file includes the plain ASCII version
>> of the Pulsar-List Digest and can be viewed with a generic text editor
>> such as Notepad or with a web browser.
>>
>> HTML Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-10-03&Archive=Pulsar
>>
>> Text Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-10-03&Archive=Pulsar
>>
>>
>> ===============================================
>> EMail Version of Today's List Digest Archive
>> ===============================================
>>
>>
>> ----------------------------------------------------------
>> Pulsar-List Digest Archive
>> ---
>> Total Messages Posted Tue 10/03/17: 9
>> ----------------------------------------------------------
>>
>>
>> Today's Message Index:
>> ----------------------
>>
>> 1. 07:56 AM - Canyon or Box Canyon Turn ? (Ron Koval)
>> 2. 12:11 PM - Parallel fuel path around Facet pump (Jim Fillman)
>> 3. 12:33 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 4. 12:42 PM - Re: Parallel fuel path around Facet pump (Ray Pulsar
>> III/3300)
>> 5. 01:19 PM - Re: Parallel fuel path around Facet pump (Sonja
>> Englert)
>> 6. 02:04 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Tubbs)
>> 7. 02:40 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 8. 05:48 PM - Re: Parallel fuel path around Facet pump (Ray Wilhelm)
>> 9. 08:53 PM - Re: Parallel fuel path around Facet pump (Bob Heiser)
>>
>>
>>
>> ________________________________ Message 1
>> _____________________________________
>>
>>
>> Time: 07:56:52 AM PST US
>> From: Ron Koval <ronko@att.net>
>> Subject: Pulsar-List: Canyon or Box Canyon Turn ?
>>
>> Pulsar friends,
>> Has anybody performed a canyon or box canyon turn in a Pulsar?
>> I was taught the maneuver when I had a Grumman Cheetah which was=C2-restr
>> icted =C2-from acrobat maneuvers or spins but the biannual wings program
>> instructor indicated that the canyon turn when performed properly produces
>> no more stress on the aircraft than a stall would.
>> Note, I don't necessarily need this skill where I fly, but I do remember
>> wh
>> en I learned how to do it, it was great skill to know.
>> Best regards,
>> RonkoN1037L
>>
>> ________________________________ Message 2
>> _____________________________________
>>
>>
>> Time: 12:11:38 PM PST US
>> From: "Jim Fillman" <pilot623@gmail.com>
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I've been mulling the issue that caused the loss of Bob
>> Heiser's Pulsar since all fuel in my plane flows through the Facet
>> auxiliary
>> fuel pump. In trying to visualize what a parallel path would look like, I
>> picture Tees on the upstream and downstream sides of the Facet with a
>> check
>> valve that only allows fuel to flow towards the engine. Am I thinking this
>> correctly? Can anyone offer a specific recommendation for the check valve?
>> Is a check valve really needed? I have no fuel return to the tanks.
>>
>>
>> Jim
>>
>> N623JF
>>
>>
>> ________________________________ Message 3
>> _____________________________________
>>
>>
>> Time: 12:33:06 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and t
>> hey recommend a certain micron size. Unfortunately i can not tell you
>> what i
>> t is from memory.
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> chec
>> k valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines
>> after m
>> ounting the manifold in the engine compartment. =46rom the manifold and
>> jet
>> i ran a line to the upside of the fuel selector switch, no need to run
>> the r
>> eturn to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss o
>> f Bob Heiser=99s Pulsar since all fuel in my plane flows through the Fa
>> cet auxiliary fuel pump. In trying to visualize what a parallel path
>> would l
>> ook like, I picture Tees on the upstream and downstream sides of the
>> Facet w
>> ith a check valve that only allows fuel to flow towards the engine. Am I
>> thi
>> nking this correctly? Can anyone offer a specific recommendation for the
>> che
>> ck valve? Is a check valve really needed? I have no fuel return to the
>> tanks
>> ..
>>
>> Jim
>> N623JF
>>
>> ________________________________ Message 4
>> _____________________________________
>>
>>
>> Time: 12:42:52 PM PST US
>> From: "Ray Pulsar III/3300" <rwilhelm@dc.rr.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> That is exactly what I did when I built mine 20 years ago, Jim. At that
>> tim
>> e there were some Facet pumps that could fail closed. Not so any more with
>> the newer ones. So they say.
>> I installed a very low crack pressure check valve in the circuit you
>> descri
>> bed. 3/8 tube size. I had one from when I worked for a company that made
>> th
>> em. I am sure you can buy one from ebay. Make sure it is aircraft and not
>> a
>> uto or industrial. They don=99t make them with very low crack pressur
>> e (8 =9C water max) and zero leakage in the check direction.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Jim Fillman
>> Sent: Tuesday, October 3, 2017 12:10 PM
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>>
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 5
>> _____________________________________
>>
>>
>> Time: 01:19:22 PM PST US
>> From: Sonja Englert <paqs345@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> My Facet fuel pump failed this year, but all that happened was that it did
>> not pump fuel anymore when turned on. Fuel would still flow through it. I
>> do not have a bypass.
>>
>> One note on vapor return lines: they may do exactly what they are called,
>> return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> the tank.
>>
>> Sonja
>>
>> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> > Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob
>> > Heiser=99s Pulsar since all fuel in my plane flows through the Face
>> t
>> > auxiliary fuel pump. In trying to visualize what a parallel path would
>> lo
>> ok
>> > like, I picture Tees on the upstream and downstream sides of the Facet
>> wi
>> th
>> > a check valve that only allows fuel to flow towards the engine. Am I
>> > thinking this correctly? Can anyone offer a specific recommendation for
>> t
>> he
>> > check valve? Is a check valve really needed? I have no fuel return to
>> the
>> > tanks.
>> >
>> >
>> > Jim
>> >
>> > N623JF
>> >
>>
>> ________________________________ Message 6
>> _____________________________________
>>
>>
>> Time: 02:04:43 PM PST US
>> From: Dennis Tubbs <dennistubbs7@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concerned what might happen if my Facet pump failed.
>>
>> On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
>>
>> > My Facet fuel pump failed this year, but all that happened was that it
>> di
>> d
>> > not pump fuel anymore when turned on. Fuel would still flow through it.
>> I
>> > do not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called,
>> > return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> > the tank.
>> >
>> > Sonja
>> >
>> > On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >
>> >> Since the fly-in, I=99ve been mulling the issue that caused the lo
>> ss of Bob
>> >> Heiser=99s Pulsar since all fuel in my plane flows through the Fac
>> et
>> >> auxiliary fuel pump. In trying to visualize what a parallel path would
>> l
>> ook
>> >> like, I picture Tees on the upstream and downstream sides of the Facet
>> w
>> ith
>> >> a check valve that only allows fuel to flow towards the engine. Am I
>> >> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> >> check valve? Is a check valve really needed? I have no fuel return to
>> th
>> e
>> >> tanks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>> >
>>
>> ________________________________ Message 7
>> _____________________________________
>>
>>
>> Time: 02:40:44 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Its vapor pressure, no pressure, no vapor!
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 3:03 PM, Dennis Tubbs <dennistubbs7@gmail.com> wrote:
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concer
>> ned what might happen if my Facet pump failed.
>>
>> > On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com>
>> wrote:
>> > My Facet fuel pump failed this year, but all that happened was that it
>> did
>> not pump fuel anymore when turned on. Fuel would still flow through it.
>> I d
>> o not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called, r
>> eturn vapor. It would be stupid to return vapor to anywhere but the top
>> of t
>> he tank.
>> >
>> > Sonja
>> >
>> >> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >> Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob Heiser=99s Pulsar since all fuel in my plane flows through th
>> e Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fac
>> et with a check valve that only allows fuel to flow towards the engine.
>> Am I
>> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> check valve? Is a check valve really needed? I have no fuel return to
>> the t
>> anks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>>
>>
>> ________________________________ Message 8
>> _____________________________________
>>
>>
>> Time: 05:48:12 PM PST US
>> From: Ray Wilhelm <rwilhelm25@gmail.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Please be advised that the crack pressure of the ASP check valve is not
>> lis
>> ted. If it is not less then 8 inches of water, do not use it. The high
>> crac
>> k pressure of typical Check Valve will cause the engine driven pump to
>> vapo
>> r lock the first time it is needed at high temps and altitude. Especially
>> w
>> ith auto gas. You do not want the pump to have to suck against the typical
>> 2 psi crack pressure. Neither do you want it to leak at all in normal
>> opera
>> tion. It is like your heart with a very bad murmur. The Facet pump will
>> jus
>> t be putting the fuel back to its own inlet.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Dennis Adams
>> Sent: Tuesday, October 3, 2017 12:36 PM
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and
>> they recommend a certain micron size. =C2-Unfortunately i can not tell y
>> ou what it is from memory. =C2-
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> che
>> ck valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines after
>> mounting the manifold in the engine compartment. =C2-From the manifold an
>> d jet i ran a line to the upside of the fuel selector switch, no need to
>> ru
>> n the return =C2-to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams=C2-
>> Sent from an IPad=C2-
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>> =C2-
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 9
>> _____________________________________
>>
>>
>> Time: 08:53:32 PM PST US
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>> From: Bob Heiser <w7ikt@fly-web.us>
>>
>>
>> I have seen diagrams just like you describe. That is the way I would do
>> it if i built or owned another low wing.
>>
>>
>> On 10/03/2017 02:10 PM, Jim Fillman wrote:
>> > I picture Tees on the upstream and downstream sides of the Facet with
>> > a check valve that only allows fuel to flow towards the engine
>>
>> --
>> God Bless,
>> Bob W7IKT & Carol N5CBQ HeiserI
>>
>>
>>
>>
>>
>>
>>
>>
>>
Message 4
| INDEX | Back to Main INDEX |
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| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pulsar-List Digest: 9 Msgs - 10/03/17 |
And 1 mechnical pump leakage replace and 1 complete failure of the
mechnical before they changed that horibble design. Fortunetly they only
both failed once on run up. That time i am sure the electric one failed
before the mechanical because the odds of both at the same time is very
low. That is why i listen very close for the fill sound of the electric
before turning the motor
On Wed, Oct 4, 2017 at 12:07 PM Mark Fox <saafbusiness@gmail.com> wrote:
> Fyi i have had 3 fuel pump failures in 21 years. All of them allow fuel
> pass through. You only know its not working when on start up listen
> carefully for the line to fill when you turn it on prior to start
>
> On Wed, Oct 4, 2017 at 12:12 AM Pulsar-List Digest Server <
> pulsar-list@matronics.com> wrote:
>
>> *
>>
>> =================================================
>> Online Versions of Today's List Digest Archive
>> =================================================
>>
>> Today's complete Pulsar-List Digest can also be found in either of the
>> two Web Links listed below. The .html file includes the Digest formatted
>> in HTML for viewing with a web browser and features Hyperlinked Indexes
>> and Message Navigation. The .txt file includes the plain ASCII version
>> of the Pulsar-List Digest and can be viewed with a generic text editor
>> such as Notepad or with a web browser.
>>
>> HTML Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-10-03&Archive=Pulsar
>>
>> Text Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-10-03&Archive=Pulsar
>>
>>
>> ===============================================
>> EMail Version of Today's List Digest Archive
>> ===============================================
>>
>>
>> ----------------------------------------------------------
>> Pulsar-List Digest Archive
>> ---
>> Total Messages Posted Tue 10/03/17: 9
>> ----------------------------------------------------------
>>
>>
>> Today's Message Index:
>> ----------------------
>>
>> 1. 07:56 AM - Canyon or Box Canyon Turn ? (Ron Koval)
>> 2. 12:11 PM - Parallel fuel path around Facet pump (Jim Fillman)
>> 3. 12:33 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 4. 12:42 PM - Re: Parallel fuel path around Facet pump (Ray Pulsar
>> III/3300)
>> 5. 01:19 PM - Re: Parallel fuel path around Facet pump (Sonja
>> Englert)
>> 6. 02:04 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Tubbs)
>> 7. 02:40 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 8. 05:48 PM - Re: Parallel fuel path around Facet pump (Ray Wilhelm)
>> 9. 08:53 PM - Re: Parallel fuel path around Facet pump (Bob Heiser)
>>
>>
>>
>> ________________________________ Message 1
>> _____________________________________
>>
>>
>> Time: 07:56:52 AM PST US
>> From: Ron Koval <ronko@att.net>
>> Subject: Pulsar-List: Canyon or Box Canyon Turn ?
>>
>> Pulsar friends,
>> Has anybody performed a canyon or box canyon turn in a Pulsar?
>> I was taught the maneuver when I had a Grumman Cheetah which was=C2-restr
>> icted =C2-from acrobat maneuvers or spins but the biannual wings program
>> instructor indicated that the canyon turn when performed properly produces
>> no more stress on the aircraft than a stall would.
>> Note, I don't necessarily need this skill where I fly, but I do remember
>> wh
>> en I learned how to do it, it was great skill to know.
>> Best regards,
>> RonkoN1037L
>>
>> ________________________________ Message 2
>> _____________________________________
>>
>>
>> Time: 12:11:38 PM PST US
>> From: "Jim Fillman" <pilot623@gmail.com>
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I've been mulling the issue that caused the loss of Bob
>> Heiser's Pulsar since all fuel in my plane flows through the Facet
>> auxiliary
>> fuel pump. In trying to visualize what a parallel path would look like, I
>> picture Tees on the upstream and downstream sides of the Facet with a
>> check
>> valve that only allows fuel to flow towards the engine. Am I thinking this
>> correctly? Can anyone offer a specific recommendation for the check valve?
>> Is a check valve really needed? I have no fuel return to the tanks.
>>
>>
>> Jim
>>
>> N623JF
>>
>>
>> ________________________________ Message 3
>> _____________________________________
>>
>>
>> Time: 12:33:06 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and t
>> hey recommend a certain micron size. Unfortunately i can not tell you
>> what i
>> t is from memory.
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> chec
>> k valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines
>> after m
>> ounting the manifold in the engine compartment. =46rom the manifold and
>> jet
>> i ran a line to the upside of the fuel selector switch, no need to run
>> the r
>> eturn to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss o
>> f Bob Heiser=99s Pulsar since all fuel in my plane flows through the Fa
>> cet auxiliary fuel pump. In trying to visualize what a parallel path
>> would l
>> ook like, I picture Tees on the upstream and downstream sides of the
>> Facet w
>> ith a check valve that only allows fuel to flow towards the engine. Am I
>> thi
>> nking this correctly? Can anyone offer a specific recommendation for the
>> che
>> ck valve? Is a check valve really needed? I have no fuel return to the
>> tanks
>> ..
>>
>> Jim
>> N623JF
>>
>> ________________________________ Message 4
>> _____________________________________
>>
>>
>> Time: 12:42:52 PM PST US
>> From: "Ray Pulsar III/3300" <rwilhelm@dc.rr.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> That is exactly what I did when I built mine 20 years ago, Jim. At that
>> tim
>> e there were some Facet pumps that could fail closed. Not so any more with
>> the newer ones. So they say.
>> I installed a very low crack pressure check valve in the circuit you
>> descri
>> bed. 3/8 tube size. I had one from when I worked for a company that made
>> th
>> em. I am sure you can buy one from ebay. Make sure it is aircraft and not
>> a
>> uto or industrial. They don=99t make them with very low crack pressur
>> e (8 =9C water max) and zero leakage in the check direction.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Jim Fillman
>> Sent: Tuesday, October 3, 2017 12:10 PM
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>>
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 5
>> _____________________________________
>>
>>
>> Time: 01:19:22 PM PST US
>> From: Sonja Englert <paqs345@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> My Facet fuel pump failed this year, but all that happened was that it did
>> not pump fuel anymore when turned on. Fuel would still flow through it. I
>> do not have a bypass.
>>
>> One note on vapor return lines: they may do exactly what they are called,
>> return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> the tank.
>>
>> Sonja
>>
>> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> > Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob
>> > Heiser=99s Pulsar since all fuel in my plane flows through the Face
>> t
>> > auxiliary fuel pump. In trying to visualize what a parallel path would
>> lo
>> ok
>> > like, I picture Tees on the upstream and downstream sides of the Facet
>> wi
>> th
>> > a check valve that only allows fuel to flow towards the engine. Am I
>> > thinking this correctly? Can anyone offer a specific recommendation for
>> t
>> he
>> > check valve? Is a check valve really needed? I have no fuel return to
>> the
>> > tanks.
>> >
>> >
>> > Jim
>> >
>> > N623JF
>> >
>>
>> ________________________________ Message 6
>> _____________________________________
>>
>>
>> Time: 02:04:43 PM PST US
>> From: Dennis Tubbs <dennistubbs7@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concerned what might happen if my Facet pump failed.
>>
>> On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
>>
>> > My Facet fuel pump failed this year, but all that happened was that it
>> di
>> d
>> > not pump fuel anymore when turned on. Fuel would still flow through it.
>> I
>> > do not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called,
>> > return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> > the tank.
>> >
>> > Sonja
>> >
>> > On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >
>> >> Since the fly-in, I=99ve been mulling the issue that caused the lo
>> ss of Bob
>> >> Heiser=99s Pulsar since all fuel in my plane flows through the Fac
>> et
>> >> auxiliary fuel pump. In trying to visualize what a parallel path would
>> l
>> ook
>> >> like, I picture Tees on the upstream and downstream sides of the Facet
>> w
>> ith
>> >> a check valve that only allows fuel to flow towards the engine. Am I
>> >> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> >> check valve? Is a check valve really needed? I have no fuel return to
>> th
>> e
>> >> tanks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>> >
>>
>> ________________________________ Message 7
>> _____________________________________
>>
>>
>> Time: 02:40:44 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Its vapor pressure, no pressure, no vapor!
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 3:03 PM, Dennis Tubbs <dennistubbs7@gmail.com> wrote:
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concer
>> ned what might happen if my Facet pump failed.
>>
>> > On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com>
>> wrote:
>> > My Facet fuel pump failed this year, but all that happened was that it
>> did
>> not pump fuel anymore when turned on. Fuel would still flow through it.
>> I d
>> o not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called, r
>> eturn vapor. It would be stupid to return vapor to anywhere but the top
>> of t
>> he tank.
>> >
>> > Sonja
>> >
>> >> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >> Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob Heiser=99s Pulsar since all fuel in my plane flows through th
>> e Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fac
>> et with a check valve that only allows fuel to flow towards the engine.
>> Am I
>> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> check valve? Is a check valve really needed? I have no fuel return to
>> the t
>> anks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>>
>>
>> ________________________________ Message 8
>> _____________________________________
>>
>>
>> Time: 05:48:12 PM PST US
>> From: Ray Wilhelm <rwilhelm25@gmail.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Please be advised that the crack pressure of the ASP check valve is not
>> lis
>> ted. If it is not less then 8 inches of water, do not use it. The high
>> crac
>> k pressure of typical Check Valve will cause the engine driven pump to
>> vapo
>> r lock the first time it is needed at high temps and altitude. Especially
>> w
>> ith auto gas. You do not want the pump to have to suck against the typical
>> 2 psi crack pressure. Neither do you want it to leak at all in normal
>> opera
>> tion. It is like your heart with a very bad murmur. The Facet pump will
>> jus
>> t be putting the fuel back to its own inlet.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Dennis Adams
>> Sent: Tuesday, October 3, 2017 12:36 PM
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and
>> they recommend a certain micron size. =C2-Unfortunately i can not tell y
>> ou what it is from memory. =C2-
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> che
>> ck valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines after
>> mounting the manifold in the engine compartment. =C2-From the manifold an
>> d jet i ran a line to the upside of the fuel selector switch, no need to
>> ru
>> n the return =C2-to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams=C2-
>> Sent from an IPad=C2-
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>> =C2-
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 9
>> _____________________________________
>>
>>
>> Time: 08:53:32 PM PST US
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>> From: Bob Heiser <w7ikt@fly-web.us>
>>
>>
>> I have seen diagrams just like you describe. That is the way I would do
>> it if i built or owned another low wing.
>>
>>
>> On 10/03/2017 02:10 PM, Jim Fillman wrote:
>> > I picture Tees on the upstream and downstream sides of the Facet with
>> > a check valve that only allows fuel to flow towards the engine
>>
>> --
>> God Bless,
>> Bob W7IKT & Carol N5CBQ HeiserI
>>
>>
>>
>>
>>
>>
>>
>>
>>
Message 5
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| Subject: | Re: Pulsar-List Digest: 9 Msgs - 10/03/17 |
In the 17 years I flew 390XP not one fuel pump failure. But then, I seldom
used it. For me it was an emergence pump in case the engine fuel pump
failed. It never did. Had a fuel pressure gauge to monitor performance of
the pumps.
Had a fuel feedback line after the engine pump direct back to the fuel
cells,,,as per the Rotax engine installation instructions.
In the early 1990s Ford pickups had two fuel tanks. There was an electric
pump to transfer fuel from one to the other. Aero Designs furnished these
with the kit in 1995 . It had a built in check valve. The instructions
furnished for installation in the truck noted that it should be installed
so there was an incline of 20 some degrees up between the input up to the
outlet. I obeyed.
390XP is resting peacefully in my garage. Waiting for a home that swill
restore her.
Bernie Wilder
On Wed, Oct 4, 2017 at 3:07 PM, Mark Fox <saafbusiness@gmail.com> wrote:
> Fyi i have had 3 fuel pump failures in 21 years. All of them allow fuel
> pass through. You only know its not working when on start up listen
> carefully for the line to fill when you turn it on prior to start
>
> On Wed, Oct 4, 2017 at 12:12 AM Pulsar-List Digest Server <
> pulsar-list@matronics.com> wrote:
>
>> *
>>
>> ========================
>> Online Versions of Today's List Digest Archive
>> ========================
>>
>> Today's complete Pulsar-List Digest can also be found in either of the
>> two Web Links listed below. The .html file includes the Digest formatted
>> in HTML for viewing with a web browser and features Hyperlinked Indexes
>> and Message Navigation. The .txt file includes the plain ASCII version
>> of the Pulsar-List Digest and can be viewed with a generic text editor
>> such as Notepad or with a web browser.
>>
>> HTML Version:
>>
>> http://www.matronics.com/digest/digestview.php?Style
>> 82701&View=html&Chapter 17-10-03&Archive=Pulsar
>>
>> Text Version:
>>
>> http://www.matronics.com/digest/digestview.php?Style
>> 82701&View=txt&Chapter 17-10-03&Archive=Pulsar
>>
>>
>> ======================
>> EMail Version of Today's List Digest Archive
>> ======================
>>
>>
>> ----------------------------------------------------------
>> Pulsar-List Digest Archive
>> ---
>> Total Messages Posted Tue 10/03/17: 9
>> ----------------------------------------------------------
>>
>>
>> Today's Message Index:
>> ----------------------
>>
>> 1. 07:56 AM - Canyon or Box Canyon Turn ? (Ron Koval)
>> 2. 12:11 PM - Parallel fuel path around Facet pump (Jim Fillman)
>> 3. 12:33 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 4. 12:42 PM - Re: Parallel fuel path around Facet pump (Ray Pulsar
>> III/3300)
>> 5. 01:19 PM - Re: Parallel fuel path around Facet pump (Sonja
>> Englert)
>> 6. 02:04 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Tubbs)
>> 7. 02:40 PM - Re: Parallel fuel path around Facet pump (Dennis
>> Adams)
>> 8. 05:48 PM - Re: Parallel fuel path around Facet pump (Ray Wilhelm)
>> 9. 08:53 PM - Re: Parallel fuel path around Facet pump (Bob Heiser)
>>
>>
>>
>> ________________________________ Message 1
>> _____________________________________
>>
>>
>> Time: 07:56:52 AM PST US
>> From: Ron Koval <ronko@att.net>
>> Subject: Pulsar-List: Canyon or Box Canyon Turn ?
>>
>> Pulsar friends,
>> Has anybody performed a canyon or box canyon turn in a Pulsar?
>> I was taught the maneuver when I had a Grumman Cheetah which was=C2-restr
>> icted =C2-from acrobat maneuvers or spins but the biannual wings program
>> instructor indicated that the canyon turn when performed properly produces
>> no more stress on the aircraft than a stall would.
>> Note, I don't necessarily need this skill where I fly, but I do remember
>> wh
>> en I learned how to do it, it was great skill to know.
>> Best regards,
>> RonkoN1037L
>>
>> ________________________________ Message 2
>> _____________________________________
>>
>>
>> Time: 12:11:38 PM PST US
>> From: "Jim Fillman" <pilot623@gmail.com>
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I've been mulling the issue that caused the loss of Bob
>> Heiser's Pulsar since all fuel in my plane flows through the Facet
>> auxiliary
>> fuel pump. In trying to visualize what a parallel path would look like, I
>> picture Tees on the upstream and downstream sides of the Facet with a
>> check
>> valve that only allows fuel to flow towards the engine. Am I thinking this
>> correctly? Can anyone offer a specific recommendation for the check valve?
>> Is a check valve really needed? I have no fuel return to the tanks.
>>
>>
>> Jim
>>
>> N623JF
>>
>>
>> ________________________________ Message 3
>> _____________________________________
>>
>>
>> Time: 12:33:06 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and t
>> hey recommend a certain micron size. Unfortunately i can not tell you
>> what i
>> t is from memory.
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> chec
>> k valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines
>> after m
>> ounting the manifold in the engine compartment. =46rom the manifold and
>> jet
>> i ran a line to the upside of the fuel selector switch, no need to run
>> the r
>> eturn to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss o
>> f Bob Heiser=99s Pulsar since all fuel in my plane flows through the Fa
>> cet auxiliary fuel pump. In trying to visualize what a parallel path
>> would l
>> ook like, I picture Tees on the upstream and downstream sides of the
>> Facet w
>> ith a check valve that only allows fuel to flow towards the engine. Am I
>> thi
>> nking this correctly? Can anyone offer a specific recommendation for the
>> che
>> ck valve? Is a check valve really needed? I have no fuel return to the
>> tanks
>> ..
>>
>> Jim
>> N623JF
>>
>> ________________________________ Message 4
>> _____________________________________
>>
>>
>> Time: 12:42:52 PM PST US
>> From: "Ray Pulsar III/3300" <rwilhelm@dc.rr.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> That is exactly what I did when I built mine 20 years ago, Jim. At that
>> tim
>> e there were some Facet pumps that could fail closed. Not so any more with
>> the newer ones. So they say.
>> I installed a very low crack pressure check valve in the circuit you
>> descri
>> bed. 3/8 tube size. I had one from when I worked for a company that made
>> th
>> em. I am sure you can buy one from ebay. Make sure it is aircraft and not
>> a
>> uto or industrial. They don=99t make them with very low crack pressur
>> e (8 =9C water max) and zero leakage in the check direction.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Jim Fillman
>> Sent: Tuesday, October 3, 2017 12:10 PM
>> Subject: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>>
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 5
>> _____________________________________
>>
>>
>> Time: 01:19:22 PM PST US
>> From: Sonja Englert <paqs345@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> My Facet fuel pump failed this year, but all that happened was that it did
>> not pump fuel anymore when turned on. Fuel would still flow through it. I
>> do not have a bypass.
>>
>> One note on vapor return lines: they may do exactly what they are called,
>> return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> the tank.
>>
>> Sonja
>>
>> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>>
>> > Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob
>> > Heiser=99s Pulsar since all fuel in my plane flows through the Face
>> t
>> > auxiliary fuel pump. In trying to visualize what a parallel path would
>> lo
>> ok
>> > like, I picture Tees on the upstream and downstream sides of the Facet
>> wi
>> th
>> > a check valve that only allows fuel to flow towards the engine. Am I
>> > thinking this correctly? Can anyone offer a specific recommendation for
>> t
>> he
>> > check valve? Is a check valve really needed? I have no fuel return to
>> the
>> > tanks.
>> >
>> >
>> > Jim
>> >
>> > N623JF
>> >
>>
>> ________________________________ Message 6
>> _____________________________________
>>
>>
>> Time: 02:04:43 PM PST US
>> From: Dennis Tubbs <dennistubbs7@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concerned what might happen if my Facet pump failed.
>>
>> On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com> wrote:
>>
>> > My Facet fuel pump failed this year, but all that happened was that it
>> di
>> d
>> > not pump fuel anymore when turned on. Fuel would still flow through it.
>> I
>> > do not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called,
>> > return vapor. It would be stupid to return vapor to anywhere but the top
>> of
>> > the tank.
>> >
>> > Sonja
>> >
>> > On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >
>> >> Since the fly-in, I=99ve been mulling the issue that caused the lo
>> ss of Bob
>> >> Heiser=99s Pulsar since all fuel in my plane flows through the Fac
>> et
>> >> auxiliary fuel pump. In trying to visualize what a parallel path would
>> l
>> ook
>> >> like, I picture Tees on the upstream and downstream sides of the Facet
>> w
>> ith
>> >> a check valve that only allows fuel to flow towards the engine. Am I
>> >> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> >> check valve? Is a check valve really needed? I have no fuel return to
>> th
>> e
>> >> tanks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>> >
>>
>> ________________________________ Message 7
>> _____________________________________
>>
>>
>> Time: 02:40:44 PM PST US
>> From: Dennis Adams <ghf4986@gmail.com>
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Its vapor pressure, no pressure, no vapor!
>>
>> Sent from an IPad
>>
>> On Oct 3, 2017, at 3:03 PM, Dennis Tubbs <dennistubbs7@gmail.com> wrote:
>>
>> Thanks Sonja, for sharing your experience here. Other comments had be
>> concer
>> ned what might happen if my Facet pump failed.
>>
>> > On Tue, Oct 3, 2017 at 1:18 PM, Sonja Englert <paqs345@gmail.com>
>> wrote:
>> > My Facet fuel pump failed this year, but all that happened was that it
>> did
>> not pump fuel anymore when turned on. Fuel would still flow through it.
>> I d
>> o not have a bypass.
>> >
>> > One note on vapor return lines: they may do exactly what they are
>> called, r
>> eturn vapor. It would be stupid to return vapor to anywhere but the top
>> of t
>> he tank.
>> >
>> > Sonja
>> >
>> >> On Tue, Oct 3, 2017 at 12:10 PM, Jim Fillman <pilot623@gmail.com>
>> wrote:
>> >> Since the fly-in, I=99ve been mulling the issue that caused the los
>> s of Bob Heiser=99s Pulsar since all fuel in my plane flows through th
>> e Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fac
>> et with a check valve that only allows fuel to flow towards the engine.
>> Am I
>> thinking this correctly? Can anyone offer a specific recommendation for
>> the
>> check valve? Is a check valve really needed? I have no fuel return to
>> the t
>> anks.
>> >>
>> >>
>> >>
>> >> Jim
>> >>
>> >> N623JF
>> >>
>> >
>>
>>
>> ________________________________ Message 8
>> _____________________________________
>>
>>
>> Time: 05:48:12 PM PST US
>> From: Ray Wilhelm <rwilhelm25@gmail.com>
>> Subject: RE: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Please be advised that the crack pressure of the ASP check valve is not
>> lis
>> ted. If it is not less then 8 inches of water, do not use it. The high
>> crac
>> k pressure of typical Check Valve will cause the engine driven pump to
>> vapo
>> r lock the first time it is needed at high temps and altitude. Especially
>> w
>> ith auto gas. You do not want the pump to have to suck against the typical
>> 2 psi crack pressure. Neither do you want it to leak at all in normal
>> opera
>> tion. It is like your heart with a very bad murmur. The Facet pump will
>> jus
>> t be putting the fuel back to its own inlet.
>>
>> Ray
>>
>> Sent from Mail for Windows 10
>>
>> From: Dennis Adams
>> Sent: Tuesday, October 3, 2017 12:36 PM
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>>
>> Jim,
>>
>> A couple of things, the Facet fuel pump requires a fuel filter upstream
>> and
>> they recommend a certain micron size. =C2-Unfortunately i can not tell y
>> ou what it is from memory. =C2-
>>
>> I bypassed the pump with a couple of tees and a check valve, no special
>> che
>> ck valve since it is low pressure.
>>
>> I bought a manifold and jet from Spruce and re-routed the fuel lines after
>> mounting the manifold in the engine compartment. =C2-From the manifold an
>> d jet i ran a line to the upside of the fuel selector switch, no need to
>> ru
>> n the return =C2-to the tank.
>>
>> The return is primarily to stop vapor lock.
>>
>> Dennis Adams=C2-
>> Sent from an IPad=C2-
>>
>> On Oct 3, 2017, at 1:10 PM, Jim Fillman <pilot623@gmail.com> wrote:
>> Since the fly-in, I=99ve been mulling the issue that caused the loss
>> of Bob Heiser=99s Pulsar since all fuel in my plane flows through the
>> Facet auxiliary fuel pump. In trying to visualize what a parallel path
>> wou
>> ld look like, I picture Tees on the upstream and downstream sides of the
>> Fa
>> cet with a check valve that only allows fuel to flow towards the engine.
>> Am
>> I thinking this correctly? Can anyone offer a specific recommendation for
>> the check valve? Is a check valve really needed? I have no fuel return to
>> t
>> he tanks.
>> =C2-
>> Jim
>> N623JF
>>
>>
>> ________________________________ Message 9
>> _____________________________________
>>
>>
>> Time: 08:53:32 PM PST US
>> Subject: Re: Pulsar-List: Parallel fuel path around Facet pump
>> From: Bob Heiser <w7ikt@fly-web.us>
>>
>>
>> I have seen diagrams just like you describe. That is the way I would do
>> it if i built or owned another low wing.
>>
>>
>> On 10/03/2017 02:10 PM, Jim Fillman wrote:
>> > I picture Tees on the upstream and downstream sides of the Facet with
>> > a check valve that only allows fuel to flow towards the engine
>>
>> --
>> God Bless,
>> Bob W7IKT & Carol N5CBQ HeiserI
>>
>>
>>
>>
>> ==========
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