Today's Message Index:
----------------------
1. 08:50 AM - Re: Back up Fuel Pump ()
2. 09:07 AM - Re: Back up Fuel Pump (Dale)
3. 10:53 AM - Re: Back up Fuel pump (captaindonhopkin@aol.com)
4. 11:53 AM - Re: Christmas Greetings and Program Letters (Bill1200)
5. 12:57 PM - Huosai fuel system in Homebuilt apps. (DAVID STROUD)
6. 08:37 PM - Re: Back up Fuel Pump (Roger Kemp M.D.)
Message 1
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| Subject: | Re: Back up Fuel Pump |
this is from Vadim (a ten year Yak-52 instructor from the Ukraine)
"It is possible to pressurize the fuel line right before carburetor
using primer as plunger pump. In this situation continues pressure will
be supported by small sphere tank which is located on fire wall if I am
not mistaken. The procedure was clearly described in Russian AFM as
emergency procedure. As Russian AFMs "written by blood" it worth to
trust them. Personally I have never had practical experience with
described above procedures but again all this according to AFM."
----- Original Message -----
From: Yak Pilot
To: yak-list@matronics.com
Sent: Tuesday, December 29, 2009 6:18 PM
Subject: Re: Yak-List: Back up Fuel Pump
Question: What's wrong with the manual backup pump?
Answer: There isn't one.
There is a manual priming pump. This same manual pump can also
be used to put some initial head pressure to the engine driven pump
(system).
However, using this pump to keep the engine going if the engine
driven mechanical pump fails (a geared pump) is highly unlikely. Yes,
it could be used to stretch a glide, etc., etc., but you are going to be
one busy bee trying to pull that thing in and out fast enough to keep
the engine actually running. I think a good way to describe trying to
do that would be best said as using the plunger pump to carry the
aircraft to the scene of the accident.
There are indeed stories of people that have claimed to have
actually pulled this off, but honestly.... I have my doubts. That
plunger pump is is not a continuous pressure pump and at best you are
going to get quick "shots" of power as you pump the crap out of this
thing.
An electric pump would indeed meet the definition of a "backup
fuel pump" while also being a very cool tool for priming.
Mark Bitterlich
--- On Mon, 12/28/09, harley@siriusconinc.com
<harley@siriusconinc.com> wrote:
From: harley@siriusconinc.com <harley@siriusconinc.com>
Subject: Re: Yak-List: Back up Fuel Pump
To: yak-list@matronics.com, captaindonhopkin@aol.com
Date: Monday, December 28, 2009, 4:38 PM
what's wrong with the manual back-up pump?
Martin
----- Original Message -----
From: captaindonhopkin@aol.com
To: yak-list@matronics.com
Sent: Monday, December 28, 2009 3:26 PM
Subject: **SPAM** Yak-List: Back up Fuel Pump
Hi gang,
I believe this subject was discussed sometime ago, but I
can't find the digest link for it. We'd like to add a back up electric
fuel pump in my Yak 52. Does anyone has schematics, drawings, photos or
any suggestions they'd like to share? Thanking you all in advance.
Ciao.
Don
Captain Don Hopkin
N6868Y
-------------------------------------------------------------------------
-----
Checked by AVG - www.avg.com
12/29/09 14:14:00
Message 2
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| Subject: | Re: Back up Fuel Pump |
This procedure works great for extending your glide. Remember when trying to use
the plunger as a emergency fuel pump to lower your MP to only keep your altitude
if possible. The higher the power setting the faster you pump. Of course
all of this is going on all at the same time.
The sphear only hold about 30 seconds of fuel when it's under pressure and since
it's a pressure carb nothing is going to happen without the pressure to get
the fuel up to the ball from the tank and back down to the carb.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=279241#279241
Message 3
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| Subject: | Re: Back up Fuel pump |
Hi,
Thanks to all with great suggestions, pics and recommendations on how to
tackle our install. I received lots of input both on the blog and to my
email. Like to give a big shout out to Dennis and Dale with some great
comments and pics. I'll let everyone know who the install went and the
results later. At the moment still in the islands on charter. Hope to
get to get back to the hanger the first weekend or so in January and see
how it goes
Don
Captain Don Hopkin
N6868Y
myscottfree.com : Web site
Message 4
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| Subject: | Re: Christmas Greetings and Program Letters |
I think this is the form to use
http://www.faa.gov/about/office_org/field_offices/fsdo/roc/local_more/media/Program%20Letter%20Form.doc
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=279269#279269
Message 5
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| Subject: | Huosai fuel system in Homebuilt apps. |
Best of the Season to All. I'm putting a Huosai engine in a Homebuilt
and starting the
install from scratch. I'll be setting up the engine and it's related
systems this Spring.
Can anyone on the list offer advice, schematics etc. on the best way to
approach
the fuel system downstream of the tanks in the most sensible and
effective way ?
Thanks.
David Stroud Ottawa, Canada
Christavia C-FDWS
Fairchild 51 replica
under construction C-FYXV
Message 6
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| Subject: | Back up Fuel Pump |
Vadim and Mark,
I have personal knowledge of a CFI in the YAK here in the US doing just that
to get himself and his student down at an airport north of Dallas, Tx. at
night none the less. This happened in the past couple of years. As I
remember it was a fuel pump failure that caused the incident. He flew the
plane while the student in the front seat pumped the primer to keep the
engine running. He said in expected fashion it burped along but was able to
hold altitude until they could make the airport.
As stated, that is in the Russian manual under emergency procedures for loss
of fuel pressure.
Doc Kemp
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
harley@siriusconinc.com
Sent: Wednesday, December 30, 2009 10:25 AM
Subject: Re: Yak-List: Back up Fuel Pump
this is from Vadim (a ten year Yak-52 instructor from the Ukraine)
"It is possible to pressurize the fuel line right before carburetor using
primer as plunger pump. In this situation continues pressure will be
supported by small sphere tank which is located on fire wall if I am not
mistaken. The procedure was clearly described in Russian AFM as emergency
procedure. As Russian AFMs "written by blood" it worth to trust them.
Personally I have never had practical experience with described above
procedures but again all this according to AFM."
----- Original Message -----
From: Yak Pilot <mailto:yakplt@yahoo.com>
Sent: Tuesday, December 29, 2009 6:18 PM
Subject: Re: Yak-List: Back up Fuel Pump
Question: What's wrong with the manual backup pump?
Answer: There isn't one.
There is a manual priming pump. This same manual pump can also be used to
put some initial head pressure to the engine driven pump (system).
However, using this pump to keep the engine going if the engine driven
mechanical pump fails (a geared pump) is highly unlikely. Yes, it could be
used to stretch a glide, etc., etc., but you are going to be one busy bee
trying to pull that thing in and out fast enough to keep the engine actually
running. I think a good way to describe trying to do that would be best
said as using the plunger pump to carry the aircraft to the scene of the
accident.
There are indeed stories of people that have claimed to have actually pulled
this off, but honestly.... I have my doubts. That plunger pump is is not a
continuous pressure pump and at best you are going to get quick "shots" of
power as you pump the crap out of this thing.
An electric pump would indeed meet the definition of a "backup fuel pump"
while also being a very cool tool for priming.
Mark Bitterlich
--- On Mon, 12/28/09, harley@siriusconinc.com <harley@siriusconinc.com>
wrote:
From: harley@siriusconinc.com <harley@siriusconinc.com>
Subject: Re: Yak-List: Back up Fuel Pump
what's wrong with the manual back-up pump?
Martin
----- Original Message -----
From: captaindonhopkin@aol.com
<http://us.mc507.mail.yahoo.com/mc/compose?to=captaindonhopkin@aol.com>
<http://us.mc507.mail.yahoo.com/mc/compose?to=yak-list@matronics.com>
Sent: Monday, December 28, 2009 3:26 PM
Subject: **SPAM** Yak-List: Back up Fuel Pump
Hi gang,
I believe this subject was discussed sometime ago, but I can't find the
digest link for it. We'd like to add a back up electric fuel pump in my Yak
52. Does anyone has schematics, drawings, photos or any suggestions they'd
like to share? Thanking you all in advance. Ciao.
Don
Captain Don Hopkin
N6868Y
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.howtocrimp.com">www.howtocrimp.com
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