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1. 05:56 PM - Re: Electric Hydraulic Pump Ideas (nico css)
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Subject: | Electric Hydraulic Pump Ideas |
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@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Robert S.
Randazzo
Sent: Thursday, April 10, 2008 11:47 PM
Subject: RE: Commander-List: 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@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of nico css
Sent: Thursday, April 10, 2008 10:30 PM
Subject: RE: Commander-List: 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@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Nancy
Gilliam
Sent: Thursday, April 10, 2008 6:31 PM
Subject: RE: Commander-List: 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@hotmail.com
Subject: RE: Commander-List: Electric Hydraulic Pump Ideas
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@cybersuperstore.com
Subject: RE: Commander-List: Electric Hydraulic Pump Ideas
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@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Nancy
Gilliam
Sent: Wednesday, April 09, 2008 5:01 PM
Subject: RE: Commander-List: 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@aol.com
Subject: Re: Commander-List: 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@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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