Today's Message Index:
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1. 06:07 AM - Re: Blown oil hose CJ - connectors? (Harv)
2. 09:25 AM - Re: Re: Blown oil hose CJ - connectors? (Richard Goode)
3. 09:59 AM - Re: Blown oil hose CJ - connectors? (Walter Lannon)
4. 10:42 AM - Re: Re: Blown oil hose CJ - connectors? (Walter Lannon)
5. 10:46 AM - Re: Blown oil hose CJ - connectors? (doug sapp)
6. 12:24 PM - SCOTT ANDREW SHARED A FILE (Scott Andrews)
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| Subject: | Re: Blown oil hose CJ - connectors? |
Sorry to hear!
This is exactly why we have a 3 year periodic hose pressure test, of course that
only goes so far though I've never heard of this happening before so is fortunately
extremely rare.
I do have spare main lines and some old fittings (from when i replaced my hoses
with new ones) if you need something to use until your's are removed from the
a/c
Harv
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471362#471362
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| Subject: | Re: Blown oil hose CJ - connectors? |
We have spent a lot of time on this issue of flexible hoses. The first
problem came when the Russians would only sell huge quantities of hose and
very unreliable deliveries. However we realised that we could not fit good
quality Western hose we decided that Aeroquip 404 was the best onto the
Russian metal fittings reliably. Of course you can do what seems an adequate
job, but when subject to excessive pressure and heat we found that the ends
would leak or possibly worse.
We spent a lot of time researching the issue, and have now developed a
system to modify the Russian metal ends to take Aeroquip 404 hose, and, for
that matter, repetitively in the future. Very importantly we have the
authorisation to give EASA "form1" documentation for these hoses the
highest European document aviation quality, and with a 10 year life.
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
Im currently in Sri Lanka but this Mail is working,and my local phone is
+94 779 132 160.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Harv
Sent: Monday, July 31, 2017 6:37 PM
Subject: Yak-List: Re: Blown oil hose CJ - connectors?
Sorry to hear!
This is exactly why we have a 3 year periodic hose pressure test, of course
that only goes so far though I've never heard of this happening before so is
fortunately extremely rare.
I do have spare main lines and some old fittings (from when i replaced my
hoses with new ones) if you need something to use until your's are removed
from the a/c
Harv
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471362#471362
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| Subject: | Re: Blown oil hose CJ - connectors? |
After reading and re-reading your description of replacing hose end fittings
I felt a reply was really necessary.
"We used a pipe wrench with the hose firmly clamped into a vise" is a
perfect example of how to not to do this job.
This process pretty much guarantees a permanently (maybe fatally) damaged
hose structure and a fitting now subject to corrosion and fatigue cracking
due to pipe wrench damage.
Walt
-----Original Message-----
From: Doug Zeissner
Sent: Sunday, July 30, 2017 3:14 PM
Subject: Re: Yak-List: Blown oil hose CJ - connectors?
When some of mine were changed we used a pipe wrench with the hose firmly
clamped into a vice. It marked them up a little but they were reusable.
Sent from my iPhone
> On Jul 30, 2017, at 2:44 PM, jay-dub <flyjnw@gmail.com> wrote:
>
>
> It's all happening...
>
> Just prior to shutdown (luckily), the hose from the engine to the oil
> cooler let go just aft of the firewall but before the cockpit, resulting
> in hot oil spraying out and now seeping from just about every panel and
> flooding the right side of the cockpit. No injuries fortunately.
>
> We can replace the hose easily enough but the issue is the connectors. The
> existing ones don't appear to be reusable - unless someone here knows
> different.
>
> Are they standard AN connectors? If so, no dramas. If not, what are they
> and where can I get them please?
>
> --------
> CJ and Yak-52 owner
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=471357#471357
>
>
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| Subject: | Re: Blown oil hose CJ - connectors? |
Hi Richard:
Are you referring specifically here to the engine oil system hoses? Or the
aircraft hoses in general? If the latter I would most certainly agree.
Referring here to Chinese rather than Russian I have found that the oil
hoses and end fittings are virtually dimensionally identical and appear
functionally interchangeable with MIL H 8794 -12 Med. Press. hose (Aeroquip
303-12 or Stratoflex 111-12).
Conversion of all other hose sizes on the CJ6 are highly questionable at
best.
Cheers;
Walt
-----Original Message-----
From: Richard Goode
Sent: Monday, July 31, 2017 9:24 AM
Subject: RE: Yak-List: Re: Blown oil hose CJ - connectors?
<richard.goode@russianaeros.com>
We have spent a lot of time on this issue of flexible hoses. The first
problem came when the Russians would only sell huge quantities of hose and
very unreliable deliveries. However we realised that we could not fit good
quality Western hose we decided that Aeroquip 404 was the best onto the
Russian metal fittings reliably. Of course you can do what seems an adequate
job, but when subject to excessive pressure and heat we found that the ends
would leak or possibly worse.
We spent a lot of time researching the issue, and have now developed a
system to modify the Russian metal ends to take Aeroquip 404 hose, and, for
that matter, repetitively in the future. Very importantly we have the
authorisation to give EASA "form1" documentation for these hoses the
highest European document aviation quality, and with a 10 year life.
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +94 (0) 81 241 5137 (Sri Lanka)
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
Im currently in Sri Lanka but this Mail is working,and my local phone is
+94 779 132 160.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Harv
Sent: Monday, July 31, 2017 6:37 PM
Subject: Yak-List: Re: Blown oil hose CJ - connectors?
Sorry to hear!
This is exactly why we have a 3 year periodic hose pressure test, of course
that only goes so far though I've never heard of this happening before so is
fortunately extremely rare.
I do have spare main lines and some old fittings (from when i replaced my
hoses with new ones) if you need something to use until your's are removed
from the a/c
Harv
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471362#471362
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| Subject: | Re: Blown oil hose CJ - connectors? |
Guys,
I have current manufacture date oil hose assemblies in stock.
Was the failure actually a fitting failure or a hose failure?
Was it a stock assembly or was it a "shop made" hose?
Making hoses is akin to playing with fire unless you know what you are
doing and have the right tools (proper mandrels, not pipe wrenches).
Unless you fully understand the process and know how to correctly check for
proper dept of hose inside the collar, "flappers" and other gotchas, you'd
best leave the job to someone more experienced, personally I am not willing
to accept the liability so I do not make or sell re-manufactured hoses.
Doug
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On Sun, Jul 30, 2017 at 5:10 PM, A. Dennis Savarese <
dsavarese0812@bellsouth.net> wrote:
> They are definitely not AN fittings! They are metric. Remove the hose
> and find a hose fabrication shop that will remove the ends off the hose and
> reuse the metric nuts or give Cliff Coy a call at Border Air in Swanton,
> VT. Cliff can remake the hose using your hose ends and metric hose.
> 802-868-2822 <(802)%20868-2822>.
> Dennis
>
>
> ------------------------------
> *From:* jay-dub <flyjnw@gmail.com>
> *To:* yak-list@matronics.com
> *Sent:* Sunday, July 30, 2017 4:45 PM
> *Subject:* Yak-List: Blown oil hose CJ - connectors?
>
>
> It's all happening...
>
> Just prior to shutdown (luckily), the hose from the engine to the oil
> cooler let go just aft of the firewall but before the cockpit, resulting in
> hot oil spraying out and now seeping from just about every panel and
> flooding the right side of the cockpit. No injuries fortunately.
>
> We can replace the hose easily enough but the issue is the connectors. The
> existing ones don't appear to be reusable - unless someone here knows
> different.
>
> Are they standard AN connectors? If so, no dramas. If not, what are they
> and where can I get them please?
>
> --------
> CJ and Yak-52 owner
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=471357#471357
>
>
> http://www.matronics.com/Navigator?Yak-Listp; - MATRONICS WEB
> FORUMS -
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> http://www.matronics.com/contribution===================
>
>
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| Subject: | SCOTT ANDREW SHARED A FILE |
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