Today's Message Index:
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1. 08:36 AM - Re: Romania (Tim Gagnon)
2. 07:56 PM - Re: lubricating the air system search (Cliff Coy)
Message 1
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The future of Yak parts?
http://cgi.ebay.com/ebaymotors/Yak-50-Tailwheel-Strut-Assy-Fork-New-OEM-Rare-_W0QQcmdZViewItemQQhashZitem588a79c279QQitemZ380280357497QQptZMotorsQ5fAviationQ5fPartsQ5fGear
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=323062#323062
Message 2
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| Subject: | Re: lubricating the air system search |
*I use Royco #43 Pneumatic system grease.
I believe MolyKote 55M is compitabile as well.
Cheers,
Cliff
*
On Fri, Dec 10, 2010 at 23:13, Roger Kemp M.D. <viperdoc@mindspring.com>wro
te:
> I have used your 30/70% formula in the air bottles for 4 years now. Seem
s
> to work well. Approaching time now to pull the actuators and grease them.
> What weight grease are ya=99ll using on the seals?
>
> Doc
>
>
> *From:* owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] *On Behalf Of *doug sapp
> *Sent:* Friday, December 10, 2010 2:30 PM
>
> *To:* yak-list@matronics.com
> *Subject:* Re: Yak-List: lubricating the air system search
>
>
> Cliff is spot on, glycerin is a humectant (attracts water) and so
> is alcohol. I have posted about this in the past. I have used glycerin
> mixed 30% with alcohol (70%) in the past and it seems to work well.
>
>
> Doug
>
> On Fri, Dec 10, 2010 at 11:43 AM, Cliff Coy <cliff.coy@gmail.com> wrote:
>
> *OK....I'll throw my hat into this ring.
>
> The Yakovlev pneumatic system is a *greased* system, not an oiled one.
>
> The assemblies and valves are to be dis-assembled and re-greased every
> 500hrs or 5 years (whichever occurs first).
>
> There has been many a witches brew suggested to inject into the system- i
e.
> air tool oil.
>
> This has the effect of washing the grease out of the system.
>
> Washing the grease out of the flap and gear selectors puts the two rotati
ng
> plates in direct contact causing scoring and ..... leakage.
>
> The 90% alcohol / Glycerin mix injected into the air bottles is to glom
> onto the engine oil and water that makes it past the filter to reduce the
> incidence of corrosion.
>
> If you're operating in high humidity areas, then I'd change the alcohol/
> glycerin mix and regrease the system more often.
>
> Just my $0.02
>
> Cliff*
>
> On Fri, Dec 10, 2010 at 14:16, Bitterlich, Mark G CIV Det Cherry Point,
> MALS-14 64E <mark.bitterlich@navy.mil> wrote:
>
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> TRUE! Never thought of it that way!
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] On Behalf Of Kregg Victory
> Sent: Friday, December 10, 2010 14:09
> To: yak-list@matronics.com
>
> Subject: RE: Yak-List: lubricating the air system search
>
>
> Good Point Mark, However one advantage of the Yak list is that is can be
> good for business.....LOL
>
> Kregg
>
> Victory Aero LLC
> 2502 John Montgomery Dr.
> San Jose, CA 95148
> 408-836-5122
> www.balancemyprop.com
>
> -----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: Friday, December 10, 2010 11:00 AM
>
> To: yak-list@matronics.com
>
> Subject: RE: Yak-List: lubricating the air system search
>
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> What I think of that (since you asked) is that you need to be very very
> careful of what you add to Russian pneumatic systems.
>
> My first exposure to the YAK List about a decade or so again was when I
> read about putting all manner of things into the pneumatic system to prev
ent
> rust in actuators. I did exactly as was suggested. The next thing that
> happened is that the Chevron Seals in my YAK-50 landing gear actuators
> actually dissolved. By the grace of God I managed to get the gear down w
ith
> the emergency system. I then wrote my first long article on how to go ab
out
> pulling the landing gear actuators and replacing the seals in a YAK-50.
>
> I did not follow any manuals like Doug Sapp is recommending. Instead I
> followed the advice given on the Yak List. In this particular case, that
> advice turned out to be less than good. Be careful of what you add to
> Russian pneumatic systems. WHAT you add and HOW MUCH you add.
>
> What is "good stuff" for preventing rust, can sometimes be BAD JU-JU for
> rubber seals.
>
> Mark Bitterlich
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:
> owner-yak-list-server@matronics.com] On Behalf Of rick@rvairshows.com
> Sent: Friday, December 10, 2010 13:22
>
> To: yak-list@matronics.com
>
> Subject: Re: Yak-List: lubricating the air system search
>
> It has been suggested to clean the air bottle and put some acf50 or simil
ar
> rust preventative in. What do you think of that?
> Rick VOLKER
>
> Sent from my Verizon Wireless BlackBerry
>
> ________________________________
>
> From: doug sapp <dougsappllc@gmail.com>
> Sender: owner-yak-list-server@matronics.com
> Date: Fri, 10 Dec 2010 10:08:29 -0800
> To: <yak-list@matronics.com>
> ReplyTo: yak-list@matronics.com
> Subject: Re: Yak-List: lubricating the air system search
>
> Bill,
> The CJ Tech Spec manual goes into detail about how much oil to ad= d an
d
> where it should be added. -I am not close to my books now or would
= look
> it up for you.
>
> A word of caution. -Do not s= quirt oil into the filter on the
> compressor, you are just flushing junk int= o the compressor and you wi
ll
> end up gumming up the poppet valve.
>
> Also, do not over do the amount of oil you add to the s= ystem. -Ke
eping
> the system DRY is of equal or greater importance than kee= ping it oile
d.
> -Check your manuals and add the-recommended-amount of = oil
or oil
> and-glycerin-mix. -
>
> Many of the actuators which I have been-getting-in = to overhau
l or as
> exchanges for new units have little or no grease left in = them because
it
> has all been washed out by the addition of light weight oil= s to the
> pneumatic system. -Without grease to lubricate the locking balls= a
nd the
> 0 rings the actuator will self-destruct in a very short time.
>
> Best,
> Doug
>
>
> = On Fri, Dec 10, 2010 at 9:10 AM, Bill1200 <billdykes52@gmail.com> wro
te:
>
> .com <billdykes52@gmail=%20.com>>
>
> I've tried several searches looking for discussion regarding pros
> and c= ons of adding a lubricant to the air system and get hundreds of
> topics, but= none related to what I'm looking for. Any suggestions on h
ow to
> word t= he search appreciated
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=3D322843#322843<=
/a>
>
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> --
> Clifford Coy
> Border Air Ltd.
> 629 Airport Rd.
> Swanton, VT 05488
> 802-868-2822 TEL
> 802-868-4465 FAX
> Skype: Cliff.Coy
>
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--
Clifford Coy
Border Air Ltd.
629 Airport Rd.
Swanton, VT 05488
802-868-2822 TEL
802-868-4465 FAX
Skype: Cliff.Coy
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