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Electric Hydraulic Pump Ideas
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rsrandazzo(at)precisionma
Guest
PostPosted: Wed Apr 09, 2008 3:46 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Bob-

Am I the only one seeing a joke buried in here someplace about it taking more pumps to keep the hydraulics pressurized in us AND our airplanes as we get older?

Robert S. Randazzo

From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of BobsV35B(at)aol.com
Sent: Wednesday, April 09, 2008 4:09 PM
To: commander-list(at)matronics.com
Subject: Re: Electric Hydraulic Pump Ideas



Good Evening Roland,



That seems high to me, but as I said before, it is at least forty years since I flew any Aero Commander and my memory just isn't that good. I would try to inquire of more current pilots because forty pumps seems like a lot to me if no component is being actuated other than the brakes. My recollection is that it only took a few pumps when the system was tight. Maybe half a dozen at most, but you know, I am getting senile!



Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22


In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time, amg3636(at)hotmail.com writes:
Quote:

Thanks for the reply Bob, as always they are welcome. How many pumps would you guess it shoulds take to get the complete system up to 1000 psi? Mine takes about 40 ( for the complete system). and pressure stays up for about 2 days.

Thanks again,

Roland AC500 N6291B







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BobsV35B(at)aol.com
Guest
PostPosted: Wed Apr 09, 2008 4:01 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
I Like it, I Like it!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22

Do not Archive



In a message dated 4/9/2008 6:46:55 P.M. Central Daylight Time, rsrandazzo(at)precisionmanuals.com writes:
Quote:

Bob-

Am I the only one seeing a joke buried in here someplace about it taking more pumps to keep the hydraulics pressurized in us AND our airplanes as we get older?

Robert S. Randazzo


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amg3636(at)hotmail.com
Guest
PostPosted: Wed Apr 09, 2008 4:03 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Bob, that was for the entire system, I will try with the brakes only and let you all know.

Roland
Quote:
From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com

Good Evening Roland,

That seems high to me, but as I said before, it is at least forty years since I flew any Aero Commander and my memory just isn't that good. I would try to inquire of more current pilots because forty pumps seems like a lot to me if no component is being actuated other than the brakes. My recollection is that it only took a few pumps when the system was tight. Maybe half a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22

In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time, amg3636(at)hotmail.com writes:
Quote:
Thanks for the reply Bob, as always they are welcome. How many pumps would you guess it shoulds take to get the complete system up to 1000 psi? Mine takes about 40 ( for the complete system). and pressure stays up for about 2 days.

Thanks again,

Roland AC500 N6291B



Planning your summer road trip? Check out AOL Travel Guides.
Quote:


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p://forums.matronics.com
blank>http://www.matronics.com/contribution

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nico(at)cybersuperstore.c
Guest
PostPosted: Wed Apr 09, 2008 10:01 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my
500. It couldn't have been tight, then, I suppose.


_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy
Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Bob, that was for the entire system, I will try with the brakes only and let
you all know.

Roland


_____

From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com

Good Evening Roland,

That seems high to me, but as I said before, it is at least forty years
since I flew any Aero Commander and my memory just isn't that good. I would
try to inquire of more current pilots because forty pumps seems like a lot
to me if no component is being actuated other than the brakes. My
recollection is that it only took a few pumps when the system was tight.
Maybe half a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22


In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time,
amg3636(at)hotmail.com writes:

Thanks for the reply Bob, as always they are welcome. How many pumps would
you guess it shoulds take to get the complete system up to 1000 psi? Mine
takes about 40 ( for the complete system). and pressure stays up for about 2
days.

Thanks again,

Roland AC500 N6291B
_____

<http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016>

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amg3636(at)hotmail.com
Guest
PostPosted: Thu Apr 10, 2008 5:13 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall, and then pump it back up?? My manual does'nt
address this issue. I assume that one pump up to 1000 psi would lower the gear?

Thanks,

Roland
Quote:
From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700

.ExternalClass .EC_hmmessage P {padding-right:0px;padding-left:0px;padding-bottom:0px;padding-top:0px;} .ExternalClass BODY.EC_hmmessage {font-size:10pt;font-family:Tahoma;} I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my 500. It couldn't have been tight, then, I suppose.
 

From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas

Bob, that was for the entire system, I will try with the brakes only and let you all know.

Roland
Quote:
From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com

Good Evening Roland,

That seems high to me, but as I said before, it is at least forty years since I flew any Aero Commander and my memory just isn't that good. I would try to inquire of more current pilots because forty pumps seems like a lot to me if no component is being actuated other than the brakes. My recollection is that it only took a few pumps when the system was tight. Maybe half a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22

In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time, amg3636(at)hotmail.com writes:
Quote:
Thanks for the reply Bob, as always they are welcome. How many pumps would you guess it shoulds take to get the complete system up to 1000 psi? Mine takes about 40 ( for the complete system). and pressure stays up for about 2 days.
 
Thanks again,

Roland AC500 N6291B



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John Vormbaum



Joined: 21 Aug 2006
Posts: 273
Location: SF Bay Area, CA
PostPosted: Thu Apr 10, 2008 5:31 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
I am suddenly imagining Commander pilots with one (right) Gorilla Arm,
and one (left) twig. "Ja, on this side I am Ahhnold. I can pomp my
hydraulics up wis ONE HUGE AHHM!"
Nancy Gilliam wrote:
Quote:
Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no
leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall,
and then pump it back up?? My manual does'nt
address this issue. I assume that one pump up to 1000 psi would lower
the gear?

Thanks,

Roland

------------------------------------------------------------------------
From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700

I kinda remember the 40 thing. Half a dozen wouldn't have made
squat in my 500. It couldn't have been tight, then, I suppose.


------------------------------------------------------------------------
*From:* owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] *On Behalf Of
*Nancy Gilliam
*Sent:* Wednesday, April 09, 2008 5:01 PM
*To:* commander-list(at)matronics.com
*Subject:* RE: Electric Hydraulic Pump Ideas

Bob, that was for the entire system, I will try with the brakes
only and let you all know.

Roland
------------------------------------------------------------------------
From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com

Good Evening Roland,

That seems high to me, but as I said before, it is at least
forty years since I flew any Aero Commander and my memory just
isn't that good. I would try to inquire of more current pilots
because forty pumps seems like a lot to me if no component is
being actuated other than the brakes. My recollection is that
it only took a few pumps when the system was tight. Maybe half
a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22

In a message dated 4/9/2008 5:26:07 P.M. Central Daylight
Time, amg3636(at)hotmail.com writes:

Thanks for the reply Bob, as always they are welcome. How
many pumps would you guess it shoulds take to get the
complete system up to 1000 psi? Mine takes about 40 ( for
the complete system). and pressure stays up for about 2 days.

Thanks again,

Roland AC500 N6291B


------------------------------------------------------------------------
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amg3636(at)hotmail.com
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PostPosted: Thu Apr 10, 2008 5:33 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Nico, My messaGE SHOULD HAVE read, lower the gear and then pump it back up, or let the gear fall.

Roland
Quote:
From: amg3636(at)hotmail.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Thu, 10 Apr 2008 21:11:04 -0400

.ExternalClass .EC_hmmessage P {padding:0px;} .ExternalClass body.EC_hmmessage {font-size:10pt;font-family:Tahoma;} Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall, and then pump it back up?? My manual does'nt
address this issue. I assume that one pump up  to 1000 psi would lower the gear?

Thanks,

Roland
Quote:
From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700

.ExternalClass .EC_hmmessage P {padding-right:0px;padding-left:0px;padding-bottom:0px;padding-top:0px;} .ExternalClass BODY.EC_hmmessage {font-size:10pt;font-family:Tahoma;} I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my 500. It couldn't have been tight, then, I suppose.
 

From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas

Bob, that was for the entire system, I will try with the brakes only and let you all know.

Roland
Quote:
From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com

Good Evening Roland,

That seems high to me, but as I said before, it is at least forty years since I flew any Aero Commander and my memory just isn't that good. I would try to inquire of more current pilots because forty pumps seems like a lot to me if no component is being actuated other than the brakes. My recollection is that it only took a few pumps when the system was tight. Maybe half a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22

In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time, amg3636(at)hotmail.com writes:
Quote:
Thanks for the reply Bob, as always they are welcome. How many pumps would you guess it shoulds take to get the complete system up to 1000 psi? Mine takes about 40 ( for the complete system). and pressure stays up for about 2 days.
 
Thanks again,

Roland AC500 N6291B



Planning your summer road trip? Check out AOL Travel Guides.
Quote:


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nico(at)cybersuperstore.c
Guest
PostPosted: Thu Apr 10, 2008 9:32 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Roland,

I have gained a lot of food for thought after the incident in which I slowed
down and let the gear fall out into a locked position. You perhaps already
saw my video of a couple of fly-bys where the left gear momentarily dangled
out of the wheel well when I pulled a bit of G's at
http://www.youtube.com/watch?v=-rcUM9MCPsA.

What bugs me today is that I just sat there like a passenger having assumed
that all the fluid was gone and there would be no steering or brakes. I
cannot remember (this was more than 25 years ago) whether I tried the
brakes, but I am sure that I didn't try the pump. It was weird watching the
plane castor off the runway into the rough until it came to a stop. I kissed
the Commander for not scaring me and waited for the fire truck.

Quote:
From what has been said in this very informative thread (as usual <yawn>) I
might have had enough hydraulic fluid below the stand pipe to pump the

brakes and steering into action. Perhaps someone who knows can tell me if
the 500 had a stand pipe in the reservoir and whether pumping that last bit
would have been lost the same way the others were lost in the first place,
making a pumping exercise useless. The leak came when the thin line to the
pressure gauge in the instrument panel cracked and atomized all the fluid
into the cabin. I was basically QBI in the cockpit for a while and I am sure
had I smoked it would have caused a comet-like ball of fire, too. With all
the oil everywhere inside the cabin, I just assumed that every drop was
pumped out.

I just took off from a rough strip which caused a lot of rattle, roll and
shaking on takeoff and I was perhaps 100' up when the cabin was instantly
filled with a sweet-smelling cloud, which I later found to be hydraulic oil.
I didn't panic but just held everything still until the cloud dissipated,
which took perhaps 15, 20 seconds or so, I cannot remember exactly, and the
Commander must have known I couldn't see a thing and held the climb steady.
I tossed my glasses and cleared as much of the windscreen and side window as
I could with whatever I had in the cabin and then proceeded home.

Weird, huh?

Nico



_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy
Gilliam
Sent: Thursday, April 10, 2008 6:31 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Nico, My messaGE SHOULD HAVE read, lower the gear and then pump it back
up, or let the gear fall.

Roland


_____

From: amg3636(at)hotmail.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Thu, 10 Apr 2008 21:11:04 -0400
Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no
leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall, and
then pump it back up?? My manual does'nt
address this issue. I assume that one pump up to 1000 psi would lower the
gear?

Thanks,

Roland
_____

From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700
I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my
500. It couldn't have been tight, then, I suppose.


_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy
Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Bob, that was for the entire system, I will try with the brakes only and let
you all know.

Roland


_____

From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com
Good Evening Roland,

That seems high to me, but as I said before, it is at least forty years
since I flew any Aero Commander and my memory just isn't that good. I would
try to inquire of more current pilots because forty pumps seems like a lot
to me if no component is being actuated other than the brakes. My
recollection is that it only took a few pumps when the system was tight.
Maybe half a dozen at most, but you know, I am getting senile!

Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22


In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time,
amg3636(at)hotmail.com writes:

Thanks for the reply Bob, as always they are welcome. How many pumps would
you guess it shoulds take to get the complete system up to 1000 psi? Mine
takes about 40 ( for the complete system). and pressure stays up for about 2
days.

Thanks again,

Roland AC500 N6291B
_____

<http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016>

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rsrandazzo(at)precisionma
Guest
PostPosted: Thu Apr 10, 2008 10:50 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
Crikey, Nico- and I’ve had a few clouds OUTSIDE the airplane scare me- I can’t imagine what that experience must have been like.


Robert S. Randazzo

From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of nico css
Sent: Thursday, April 10, 2008 10:30 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas



Roland,

I have gained a lot of food for thought after the incident in which I slowed down and let the gear fall out into a locked position. You perhaps already saw my video of a couple of fly-bys where the left gear momentarily dangled out of the wheel well when I pulled a bit of G's at http://www.youtube.com/watch?v=-rcUM9MCPsA.

What bugs me today is that I just sat there like a passenger having assumed that all the fluid was gone and there would be no steering or brakes. I cannot remember (this was more than 25 years ago) whether I tried the brakes, but I am sure that I didn't try the pump. It was weird watching the plane castor off the runway into the rough until it came to a stop. I kissed the Commander for not scaring me and waited for the fire truck.

From what has been said in this very informative thread (as usual <yawn>) I might have had enough hydraulic fluid below the stand pipe to pump the brakes and steering into action. Perhaps someone who knows can tell me if the 500 had a stand pipe in the reservoir and whether pumping that last bit would have been lost the same way the others were lost in the first place, making a pumping exercise useless. The leak came when the thin line to the pressure gauge in the instrument panel cracked and atomized all the fluid into the cabin. I was basically QBI in the cockpit for a while and I am sure had I smoked it would have caused a comet-like ball of fire, too. With all the oil everywhere inside the cabin, I just assumed that every drop was pumped out.

I just took off from a rough strip which caused a lot of rattle, roll and shaking on takeoff and I was perhaps 100' up when the cabin was instantly filled with a sweet-smelling cloud, which I later found to be hydraulic oil. I didn't panic but just held everything still until the cloud dissipated, which took perhaps 15, 20 seconds or so, I cannot remember exactly, and the Commander must have known I couldn't see a thing and held the climb steady. I tossed my glasses and cleared as much of the windscreen and side window as I could with whatever I had in the cabin and then proceeded home.


Weird, huh?



Nico








From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy Gilliam
Sent: Thursday, April 10, 2008 6:31 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Nico, My messaGE SHOULD HAVE read, lower the gear and then pump it back up, or let the gear fall.

Roland



From: amg3636(at)hotmail.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Thu, 10 Apr 2008 21:11:04 -0400

Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall, and then pump it back up?? My manual does'nt
address this issue. I assume that one pump up to 1000 psi would lower the gear?

Thanks,

Roland

From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700
I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my 500. It couldn't have been tight, then, I suppose.



From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Bob, that was for the entire system, I will try with the brakes only and let you all know.

Roland



From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com



Good Evening Roland,



That seems high to me, but as I said before, it is at least forty years since I flew any Aero Commander and my memory just isn't that good. I would try to inquire of more current pilots because forty pumps seems like a lot to me if no component is being actuated other than the brakes. My recollection is that it only took a few pumps when the system was tight. Maybe half a dozen at most, but you know, I am getting senile!



Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22


In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time, amg3636(at)hotmail.com writes:
Quote:

Thanks for the reply Bob, as always they are welcome. How many pumps would you guess it shoulds take to get the complete system up to 1000 psi? Mine takes about 40 ( for the complete system). and pressure stays up for about 2 days.

Thanks again,

Roland AC500 N6291B







Planning your summer road trip? Check out AOL Travel Guides.
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nico(at)cybersuperstore.c
Guest
PostPosted: Fri Apr 11, 2008 4:56 pm    Post subject: Electric Hydraulic Pump Ideas Reply with quote
It stayed with me all this time and I must admit that there were moments
that I thought I bought it. (It rhymes).

I suppose every pilot has moments that stick around forever.



_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Robert S.
Randazzo
Sent: Thursday, April 10, 2008 11:47 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas

Crikey, Nico- and I've had a few clouds OUTSIDE the airplane scare me- I
can't imagine what that experience must have been like.





Robert S. Randazzo



From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of nico css
Sent: Thursday, April 10, 2008 10:30 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas



Roland,



I have gained a lot of food for thought after the incident in which I slowed
down and let the gear fall out into a locked position. You perhaps already
saw my video of a couple of fly-bys where the left gear momentarily dangled
out of the wheel well when I pulled a bit of G's at
http://www.youtube.com/watch?v=-rcUM9MCPsA.



What bugs me today is that I just sat there like a passenger having assumed
that all the fluid was gone and there would be no steering or brakes. I
cannot remember (this was more than 25 years ago) whether I tried the
brakes, but I am sure that I didn't try the pump. It was weird watching the
plane castor off the runway into the rough until it came to a stop. I kissed
the Commander for not scaring me and waited for the fire truck.



Quote:
From what has been said in this very informative thread (as usual <yawn>) I
might have had enough hydraulic fluid below the stand pipe to pump the

brakes and steering into action. Perhaps someone who knows can tell me if
the 500 had a stand pipe in the reservoir and whether pumping that last bit
would have been lost the same way the others were lost in the first place,
making a pumping exercise useless. The leak came when the thin line to the
pressure gauge in the instrument panel cracked and atomized all the fluid
into the cabin. I was basically QBI in the cockpit for a while and I am sure
had I smoked it would have caused a comet-like ball of fire, too. With all
the oil everywhere inside the cabin, I just assumed that every drop was
pumped out.



I just took off from a rough strip which caused a lot of rattle, roll and
shaking on takeoff and I was perhaps 100' up when the cabin was instantly
filled with a sweet-smelling cloud, which I later found to be hydraulic oil.
I didn't panic but just held everything still until the cloud dissipated,
which took perhaps 15, 20 seconds or so, I cannot remember exactly, and the
Commander must have known I couldn't see a thing and held the climb steady.
I tossed my glasses and cleared as much of the windscreen and side window as
I could with whatever I had in the cabin and then proceeded home.



Weird, huh?



Nico







_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy
Gilliam
Sent: Thursday, April 10, 2008 6:31 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas

Nico, My messaGE SHOULD HAVE read, lower the gear and then pump it back
up, or let the gear fall.

Roland

_____

From: amg3636(at)hotmail.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Thu, 10 Apr 2008 21:11:04 -0400

Nico,

Let's say you still had your 500. If your only hyd. pump went out ( no
leaks) Would you pump up the entire system
and lower the gear, or would you slow it down and let the gear fall, and
then pump it back up?? My manual does'nt
address this issue. I assume that one pump up to 1000 psi would lower the
gear?

Thanks,

Roland

_____

From: nico(at)cybersuperstore.com
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas
Date: Wed, 9 Apr 2008 22:58:21 -0700

I kinda remember the 40 thing. Half a dozen wouldn't have made squat in my
500. It couldn't have been tight, then, I suppose.





_____

From: owner-commander-list-server(at)matronics.com
[mailto:owner-commander-list-server(at)matronics.com] On Behalf Of Nancy
Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
To: commander-list(at)matronics.com
Subject: RE: Electric Hydraulic Pump Ideas

Bob, that was for the entire system, I will try with the brakes only and let
you all know.

Roland

_____

From: BobsV35B(at)aol.com
Date: Wed, 9 Apr 2008 19:08:50 -0400
Subject: Re: Electric Hydraulic Pump Ideas
To: commander-list(at)matronics.com


Good Evening Roland,



That seems high to me, but as I said before, it is at least forty years
since I flew any Aero Commander and my memory just isn't that good. I would
try to inquire of more current pilots because forty pumps seems like a lot
to me if no component is being actuated other than the brakes. My
recollection is that it only took a few pumps when the system was tight.
Maybe half a dozen at most, but you know, I am getting senile!



Happy Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22



In a message dated 4/9/2008 5:26:07 P.M. Central Daylight Time,
amg3636(at)hotmail.com writes:

Thanks for the reply Bob, as always they are welcome. How many pumps would
you guess it shoulds take to get the complete system up to 1000 psi? Mine
takes about 40 ( for the complete system). and pressure stays up for about 2
days.

Thanks again,

Roland AC500 N6291B

_____

<http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016>

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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