Today's Message Index:
----------------------
1. 03:43 AM - Re: Re: Yak 52 engine at cruise (Craig Schneider)
2. 10:19 AM - Fuel pump failure (John Graham)
3. 10:47 AM - Re: Fuel pump failure (Scooter)
4. 10:59 AM - Re: Fuel pump failure (Richard Goode)
5. 11:23 AM - Re: Re: Fuel pump failure (A. Dennis Savarese)
6. 12:12 PM - Re: Re: Fuel pump failure (Roger Kemp)
7. 12:44 PM - Re: Fuel pump failure (Craig Schneider)
8. 01:10 PM - Re: Fuel pump failure (viperdoc)
9. 06:24 PM - Re: Fuel pump failure (Rob Rowe)
10. 06:40 PM - Re: Fuel pump failure (Jim)
11. 07:48 PM - Re: Re: Fuel pump failure (Brian Lloyd)
12. 09:12 PM - Re: Re: Yak 52 engine at cruise (netmaster15@juno.com)
Message 1
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| Subject: | Re: Yak 52 engine at cruise |
Approx 130kts at 3-5K FT (fuel flow on the EI shows 16-18GPH)
From: Craig Payne
Sent: Wed 10/10/2007 7:22 PM
Subject: Yak-List: Re: Yak 52 engine at cruise
And what IAS might you see at a given altitude, using that 70 squared setti
ng?
Craig Payne
cpayne@joimail.com
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| Subject: | Fuel pump failure |
If the engine driven fuel pump fails in flight, I have
heard one can pump the primer lever rapidly to keep
enough fuel going to the engine to keep it running
long enough to land the plane. Is this true? Also,
would one pump the handle after turning it to the left
(fuel pressure) or right (fuel primer)?
As always, thanks for your answers as I continue to
learn about my Yak 52.
Thanks,
John P. Graham
CubFlyer1940@Yahoo.com
Cell phone (847) 641-1330
http://smallbusiness.yahoo.com/webhosting
Message 3
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| Subject: | Re: Fuel pump failure |
You might want to get hold of one (or more) of the "flight manuals" floating around
on the net. The version I have has the following:
Low fuel pressure
Turn the mechanical fuel pump 45 left and pump to provide fuel pressure then land
as soon as possible.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=139425#139425
Message 4
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| Subject: | Re: Fuel pump failure |
The obvious side is to pump intp the carburetor and you can keep the engine
going indefinitely-or at least until your hand is totally lacerated!!
Not so well known is that you can keep the engine going by priming on the "
cylinder" side if the carburetor or the fuel supply to the carburetor has f
ailed.However it has to be done very carefully to avoid either drowning or
starving the engine!
Richard
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
----- Original Message -----
From: John Graham
To: Yak list
Sent: Thursday, October 11, 2007 6:18 PM
Subject: Yak-List: Fuel pump failure
If the engine driven fuel pump fails in flight, I have
heard one can pump the primer lever rapidly to keep
enough fuel going to the engine to keep it running
long enough to land the plane. Is this true? Also,
would one pump the handle after turning it to the left
(fuel pressure) or right (fuel primer)?
As always, thanks for your answers as I continue to
learn about my Yak 52.
Thanks,
John P. Graham
CubFlyer1940@Yahoo.com
Cell phone (847) 641-1330
http://smallbusiness.yahoo.com/webhosting
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Message 5
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| Subject: | Re: Fuel pump failure |
Yes, Scooter is correct PROVIDED it is LOW fuel pressure. Low fuel pressure
means the fuel pump is working somewhat. NO fuel pressure means you pump
like heck with the pump to the right because that is the direction that
pumps fuel into the supercharger and ultimately into the intake tubes and
cylinders.
Dennis
----- Original Message -----
From: "Scooter" <yakk52@verizon.net>
Sent: Thursday, October 11, 2007 12:47 PM
Subject: Yak-List: Re: Fuel pump failure
>
> You might want to get hold of one (or more) of the "flight manuals"
> floating around on the net. The version I have has the following:
>
> Low fuel pressure
>
> Turn the mechanical fuel pump 45 left and pump to provide fuel pressure
> then land as soon as possible.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=139425#139425
>
>
>
Message 6
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| Subject: | Re: Fuel pump failure |
You guys really think you are going to keep the fire lit pumping like crazy
and be able to land. Which is the primer handle is turned to the right when
you have ZERO fuel pressure for the 52 that is. The 50 is to the left for
cylinder priming. With a totally dead fuel pump pressurizing the system is
not going to get you anything but a cough.
I have been down that road on the ground now add flying the airplane with
your left hand and pumping like crazy with the right! Just hope some
passerby does not get the wrong idea as that plane bobs up and down like a
cork! The poor chase ( if there is one) is going to be one sea sick dude not
to say what you are going to look like coming down final! Guess there is a
positive though, you are coming down final.
Like I said I did that once on the ground when the fuel pump we rebuilt was
reassembled with the rotor in 180 out (yes you can do that). 0 fuel
pressure. She started and I pumped like "crazy" to keep her going to the
tune of about a stroke every 2-3 seconds which is about as fast as you can
pull the plunger out and push it in. Not really sure how long I could have
keep that up. She will run about 2 seconds before she starts to wind down.
That was at idle! Wonder how fast you have to pump at 70% and 400 mmHg for
holding the glide slope on final? I do not know.
The question is, is it worth crashing an airplane on final or bailing out at
2500 or so feet?
If it happened to me and I was not in gliding distance (for the 52 that is
pretty darned short), I'm taking the silk let down personally!
Sorry Tom or Cannon, you'll have to buy me a new one if that happens.
Just my useless 2 c.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
Sent: Thursday, October 11, 2007 1:22 PM
Subject: Re: Yak-List: Re: Fuel pump failure
<dsavarese@elmore.rr.com>
Yes, Scooter is correct PROVIDED it is LOW fuel pressure. Low fuel pressure
means the fuel pump is working somewhat. NO fuel pressure means you pump
like heck with the pump to the right because that is the direction that
pumps fuel into the supercharger and ultimately into the intake tubes and
cylinders.
Dennis
----- Original Message -----
From: "Scooter" <yakk52@verizon.net>
Sent: Thursday, October 11, 2007 12:47 PM
Subject: Yak-List: Re: Fuel pump failure
>
> You might want to get hold of one (or more) of the "flight manuals"
> floating around on the net. The version I have has the following:
>
> Low fuel pressure
>
> Turn the mechanical fuel pump 45 left and pump to provide fuel pressure
> then land as soon as possible.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=139425#139425
>
>
>
Message 7
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| Subject: | Fuel pump failure |
I have an electric boost pump. 28V facet mounted on the firewall, in
fuel line before the engine driven fuel pump. Cheap investment Model
40164 $42.60 at Aircraft Spruce
Don't fly without one!
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John Graham
Sent: Thursday, October 11, 2007 1:19 PM
Subject: Yak-List: Fuel pump failure
If the engine driven fuel pump fails in flight, I have heard one can
pump the primer lever rapidly to keep enough fuel going to the engine to
keep it running long enough to land the plane. Is this true? Also,
would one pump the handle after turning it to the left (fuel pressure)
or right (fuel primer)?
As always, thanks for your answers as I continue to learn about my Yak
52.
Thanks,
John P. Graham
CubFlyer1940@Yahoo.com
Cell phone (847) 641-1330
http://smallbusiness.yahoo.com/webhosting
Message 8
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| Subject: | Fuel pump failure |
That is a GREAT IDEA that I had not thought of! Not that I have any corner
on bright ideas. I don't! Especially since I ops tested the yes you can
reassemble the fuel pump backwards!
Thanks.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Craig Schneider
Sent: Thursday, October 11, 2007 2:48 PM
Subject: RE: Yak-List: Fuel pump failure
I have an electric boost pump. 28V facet mounted on the firewall, in
fuel line before the engine driven fuel pump. Cheap investment Model
40164 $42.60 at Aircraft Spruce
Don't fly without one!
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John Graham
Sent: Thursday, October 11, 2007 1:19 PM
Subject: Yak-List: Fuel pump failure
If the engine driven fuel pump fails in flight, I have heard one can
pump the primer lever rapidly to keep enough fuel going to the engine to
keep it running long enough to land the plane. Is this true? Also,
would one pump the handle after turning it to the left (fuel pressure)
or right (fuel primer)?
As always, thanks for your answers as I continue to learn about my Yak
52.
Thanks,
John P. Graham
CubFlyer1940@Yahoo.com
Cell phone (847) 641-1330
http://smallbusiness.yahoo.com/webhosting
Message 9
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| Subject: | Re: Fuel pump failure |
FWIW - the 740400 fuel primer capacity is only 8 cc ... so if we assume 45ish litres/hr
as a minimum fuel burn for straight & level at c.190kmh ... then you're
going to have to pump the system primer nearly 100 times a minute to cover
a zero pressure situation!
So at best you might just augment a low fuel pressure problem by system priming
... just keep that bionic arm handy [Wink]
Rob R.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=139496#139496
Message 10
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| Subject: | Re: Fuel pump failure |
Frank Put one in his Plane also, good Idea, just more Items.
Jim
----- Original Message -----
From: "Craig Schneider" <craig@ustek.com>
Sent: Thursday, October 11, 2007 12:47 PM
Subject: RE: Yak-List: Fuel pump failure
>
> I have an electric boost pump. 28V facet mounted on the firewall, in
> fuel line before the engine driven fuel pump. Cheap investment Model
> 40164 $42.60 at Aircraft Spruce
>
> Don't fly without one!
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of John Graham
> Sent: Thursday, October 11, 2007 1:19 PM
> To: Yak list
> Subject: Yak-List: Fuel pump failure
>
>
> If the engine driven fuel pump fails in flight, I have heard one can
> pump the primer lever rapidly to keep enough fuel going to the engine to
> keep it running long enough to land the plane. Is this true? Also,
> would one pump the handle after turning it to the left (fuel pressure)
> or right (fuel primer)?
> As always, thanks for your answers as I continue to learn about my Yak
> 52.
>
> Thanks,
>
> John P. Graham
> CubFlyer1940@Yahoo.com
> Cell phone (847) 641-1330
>
>
>
> http://smallbusiness.yahoo.com/webhosting
>
>
>
>
>
>
>
>
>
>
Message 11
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| Subject: | Re: Fuel pump failure |
On Oct 11, 2007, at 12:10 PM, Roger Kemp wrote:
> The question is, is it worth crashing an airplane on final or
> bailing out at
> 2500 or so feet?
Pump to get yourself into the pattern and in position to make the
runway dead-stick. Quit pumping and dead-stick the airplane onto the
runway safely. You can do a power-off landing of the airplane, can't
you?
> If it happened to me and I was not in gliding distance (for the 52
> that is
> pretty darned short), I'm taking the silk let down personally!
> Sorry Tom or Cannon, you'll have to buy me a new one if that happens.
So you wouldn't even try to keep the engine going? I know I would. If
I couldn't THEN I would make a forced landing (good landing spot) or
bail out (no good landing spot).
--
Brian Lloyd 3191 Western Drive
brian HYPHEN 1927 AT lloyd DOT com Cameron Park, CA 95682
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
Antoine de Saint-Exupry
PGP key ID: 12095C52A32A1B6C
PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C
Message 12
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| Subject: | Re: Yak 52 engine at cruise |
wHEN YOU DECIDE THAT YOU CANNOT KEEP THE ENGINE RUNNING BY PUMPING AND M
AKING IT TO THE RUNWAY IS QUESTIONABLE DONT FORGET TO PULL THE PROP ALL
THE WAY BACK INTO HIGH PITCH- - LOW RPM--- yOU DONT NEED A SPEED BRAKE
OUT FRONT
-- Craig Schneider <craig@ustek.com> wrote:
Approx 130kts at 3-5K FT (fuel flow on the EI shows 16-18GPH)
From: Craig Payne
Sent: Wed 10/10/2007 7:22 PM
Subject: Yak-List: Re: Yak 52 engine at cruise
And what IAS might you see at a given altitude, using that 70 squared se
tting? Craig Paynecpayne@joimail.com
========================
========================
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