Today's Message Index:
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1. 12:12 AM - Re: Re: Remanufacturing Russian Check Valves (Jan Mevis)
2. 08:09 AM - Re: Remanufacturing Russian Check Valves (Noplugs)
3. 08:09 AM - Re: engine mount for yak 55 (Joe Howse)
4. 08:51 AM - Re: Re: Yak-List Digest: 12 Msgs - 08/03/09 (Richard Goode)
Message 1
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| Subject: | Re: Remanufacturing Russian Check Valves |
The Russians add a few drops of 50/50 glycerine/ethanol to the landing gear
actuators before winter time. They used to have a special liquid in the
eighties, but it's impossible to find, even for them.I also am suspicious
because ethanol may attack rubber. But I don't know what kind of material is
used for the seals.
Anyway, a FEW drops, not half a liter.
Jan
YK50 RA2005K
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: vrijdag 25 september 2009 3:16
Subject: RE: Yak-List: Re: Remanufacturing Russian Check Valves
MALS-14 64E" <mark.bitterlich@navy.mil>
FROM THE ARM CHAIR OF Mark Bitterlich:
Personally, I am not going to introduce anything into the pneumatic system
of my YAK-50. I have heard a lot of stories about squirting this and that
into the system to keep this and that from corroding. Anything from "light
machine oil" to "pneumatic tool oil" to "hydraulic fluid" (original 5606 and
the new synthetic types for example), etc., etc. Maybe 5606 is good... I
really do not know.
ANYWAY..... I did it. I put pneumatic tool oil into my 50. The next
thing I knew I had trouble with the pressure regulation. Turns out that
when you get oil on the pop-off valve seal, it does not want to seal as
well, and my pressure regulation went from 50 atmos, to about 35 atmos.
Next thing I knew, I blew the seals out of the landing gear actuators. That
just sucks, and if you have never R&R'ed the landing gear actuators on a
YAK-50, let me tell you it is not really a ton of fun. Then there is the
matter of finding new seals. Maybe it was because mine were too old to
begin with and just needed that to make them go bad. Who knows? I sure do
not.
Bottom line, I think it is a better idea to pull the landing gear actuators
every "so many years" and just replace those seals anyway, and when you have
the mess taken apart, have it treated for corrosion, by any method you so
choose. My personal opinion is simply that it is much easier to ruin the
seals by adding "stuff" into the system than it is to have the darn things
corrode to the point of failure. A rebuild every "X" number of years is
possibly a better solution.
But,... it is very possible I am dead wrong. Regardless, I tried it, and
will never do it again.
Mark Bitterlich
p.s. Adding a tiny amount of lubricant after a total rebuild to allow
everything to go together and seat is another story. I'd use a DROP or two
of castor oil. If that much.
________________________________
From: owner-yak-list-server@matronics.com on behalf of keithmckinley
Sent: Thu 9/24/2009 7:44 PM
Subject: Yak-List: Re: Remanufacturing Russian Check Valves
Aircraft Hydraulic Fluid MIL-H-5606 is what I believe, but then again I was
trying to get some more info as well.
--------
Keith McKinley
700HS
KFIT
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=264821#264821
Message 2
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| Subject: | Re: Remanufacturing Russian Check Valves |
I would not use 5606 or any other oil that is mineral based, because one of the
oils in the manual said to use Caster Oil which is vegetable based oil. So
I would think that the also referenced #10 Hydraulic Oil would also be a vegetable
based oil. There are several of these Veggie based hydraulic oils available
today. But we are back to square one which oil to use
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=264930#264930
Message 3
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| Subject: | Re: engine mount for yak 55 |
What type of 3 blade prop do you have?
Joe
----- Original Message -----
From: tasport@msn.com
To: yak-list@matronics.com
Sent: Thursday, September 24, 2009 7:13 PM
Subject: Yak-List: engine mount for yak 55
Hello group, I still need a upper right engine mount from the firewall
to the mount ring, thought I had one located but after about a month of
waiting the owner decided not to sell it. Thanks in advance for any
information or leads, also it currently has a three blade prop but the
blades are a little too long as I fly off a rough grass strip and was
wondering if anyone had a complete two blade Russian that they wanted to
part with. Thank you, Todd.
Message 4
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| Subject: | Re: RE: Yak-List Digest: 12 Msgs - 08/03/09 |
V-530 Props.TBO is 500 hours/6 years,whichever comes first.
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: SRGraham
To: yak-list@matronics.com
Sent: Tuesday, August 04, 2009 9:41 AM
Subject: Yak-List: RE: Yak-List Digest: 12 Msgs - 08/03/09
Does anyone have any information on the lifetime/TBO of the standard
V530
propeller? I have two passports for different propellers, written in
Russian
of course but it would be nice to have an idea of the expected service
life,
followed by the expected life following service.
Thanks
Stewart Graham
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