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Old 02-03-2020, 08:24 AM   #1
skidmarks
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Default Airplane parts? Or junk?

Estate clean out.

Guy had a bunch of airplane parts and some partial planes.
I went mainly for the tools and ended up with this pile of aluminum hydraulic cylinders
Single acting but duel port with one being a quick disconnect.

Before i either use them for a garden dump trailer or just scrap them, figured i would see if anyone knows what they were for.
Landing gear?
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Old 02-03-2020, 11:54 AM   #2
macdonge
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Default Re: Airplane parts? Or junk?

If they aren't leaking, with some adaptations, they might come in handy for use on a frame table.
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Old 02-03-2020, 11:55 AM   #3
Hal Beatty
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Default Re: Airplane parts? Or junk?

Any numbers on them?
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Old 02-03-2020, 12:09 PM   #4
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Default Re: Airplane parts? Or junk?

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Any numbers on them?
Nothing that i found so far
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Old 02-03-2020, 02:12 PM   #5
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Default Re: Airplane parts? Or junk?

Landing gear hydraulic actuators have to work for extend and retract and those aren't set up for that. Those may be oleo struts since they only work as an air/oil spring with a single port for servicing of hydraulic oil or nitrogen. Those look a lot simpler than most I've worked on over the years. They may be for an experimental aircraft as well. A person would have to know what type of aircraft were being maintained my the previous owner.

If they are a lift cylinder, then they would use gravity for retract and hydraulic pressure for extend just like a hydraulic jack but they would need a control block and a pump to connect up with.
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Old 02-03-2020, 02:49 PM   #6
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Default Re: Airplane parts? Or junk?

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The guy died, so asking for more info is alittle hard.

One port has a 3/8 hydraulic hose swivle union, the other is a male quick connector with a check valve, like an auxiliary power source can be hooked up to either test it or service something without using the planes hydraulic system. (Thats my guess for 2 ports on a single acting cylinder)
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Old 02-03-2020, 03:51 PM   #7
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Default Re: Airplane parts? Or junk?

Looks like a single action piston...quickconnects like that sometimes are used to manually test and bleed air out of the system.
How about an airbrake...wouldn´t that be something it can operate..just guessing.
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Old 02-04-2020, 10:38 AM   #8
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Default Re: Airplane parts? Or junk?

One could also attach a spring(s) to the mechanism to retract the cylinders. That's how the leveling cylinders work on RVs these days. Of course the pressure would need to be relieved, first.

Al Hook
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Old 02-04-2020, 11:13 AM   #9
51 MERC-CT
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Default Re: Airplane parts? Or junk?

Quote:
Originally Posted by skidmarks View Post
The guy died, so asking for more info is alittle hard.

One port has a 3/8 hydraulic hose swivle union, the other is a male quick connector with a check valve, like an auxiliary power source can be hooked up to either test it or service something without using the planes hydraulic system. (Thats my guess for 2 ports on a single acting cylinder)

Test or service something (not necessarily an aircraft) is my guess also.
Suspect that the only flying time these saw was when transporting them from place to place.
Also they don't give the appearance of most air-worthy components that I have seen. (lack of zinc chromate primer if required)
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Old 02-04-2020, 02:02 PM   #10
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Default Re: Airplane parts? Or junk?

I tend to agree. They have just the one bolt hole on the feed block side. Airplane oleo struts always have mounting points plus a scissors link to keep them from rotating. My guess is some sort of lift cylinders for one application or another. Who knows?
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Old 02-04-2020, 03:24 PM   #11
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Default Re: Airplane parts? Or junk?

Base is square and fits into something. The offset mounting hole lets it hinge.

they cant rotate when mounted. Rams are hollow with one hole about 5/16" for a retainer to keep them attached

Being hollow cuts down weight which made me think it was something to do with all the other airplane stuff.


All that was there was a machine shop and machinist tools, 4 airplanes in pieces and junk model A fords. Mother nature took a toll on pretty much all of it.

The airplanes sold for about 40 bucks apiece.

It was more curiosity to what the cylinders were for
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