Today's Message Index:
----------------------
1. 06:21 AM - Re: Metal In Oil Filters (Anthony Royal)
2. 06:39 AM - Re: Metal In Oil Filters (Anthony Royal)
3. 08:50 AM - Re: Metal In Oil Filters (DangerJet)
4. 09:56 AM - (Robert Schwartz)
5. 04:05 PM - Re: Metal In Oil Filters (William Geipel)
Message 1
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| Subject: | Re: Metal In Oil Filters |
That you did, my friend. Been a great aircraft.
Did you go to the Czech Republic to pick out the aircraft? I believe Rick W
orringer said you did.
On Saturday, March 4, 2017 11:41 PM, William Geipel <l129bs@gmail.com>
wrote:
That=99s because I imported only top-o-the-line jets.IMHO
We paid extra for the carbon.
On Mar 4, 2017, at 19:46, Anthony Royal <skyking76t@verizon.net> wrote:
I have to add I have never found any metal in my oil filter screens. A litt
le carbon but other than that always been clean
On Saturday, March 4, 2017 8:28 PM, Bill Culberson <migfighter42@gmail.
com> wrote:
I have to say, I would not fly it until you had absolute confidence that th
e engine was not making metal. I would tie it down and fun it for a WHILE
=C2- at flying RPMs and then see how the filter/ oil analysis works, don'
t fly till your sure.
The L-29 is one of the best flying jet trainers in the world with the best
safety record. Don't be a statistic.
Bill Culberson
Red Star Aero Services
N39DE
Sent from my iPhone
> On Mar 4, 2017, at 1:18 AM, DangerJet <apredictableecho@gmail.com> wrote:
>
>
> After the first flight of my plane (since import), and the associated lon
g duration high power engine run, I drained the oil, and removed and cleane
d the filters. The oil was free of any visible FOD, (sample sent for oil an
alysis), but when I washed the 3 filters I did find a number (maybe 15 part
icles per filter) of very small (barely visible) metal pieces. They were cl
early ferrous (they stuck to my magnet).
> Should I be worried? The airplane sat for a lot of years before this run.
>
> The temps and pressures are all good, and the EGT is good. The spooldown
takes a while (indicated not damaged bearings), but there is a noise on spo
oldown (almost like a clicking) below ~200 rpm, audible from near the inlet
s.
>
> I am concerned about potential corrosion/damage to the bearings from sitt
ing, any thoughts?
>
> My current plan is to do another engine run, another flight (less than 30
minutes), come back, and drain the oil again to see if more metal has accu
mulated. Is this reasonable?
>
> Thanks!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=466849#466849
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Metal In Oil Filters |
In piston engines, such as Lycoming and Continental, a small amount of meta
l, a lot greater than a few flakes, in the oil is considered normal. The co
mposition of the metal particles is what is important. Gives one an idea of
what part is wearing. While it may not be desirable, it is not always cata
strophic. I don't know if the same logic or guidelines applies to the M701.
How long did the engine sit before being first run? Was it cycled a few ti
mes to get oil pressure up before attempting the first start?
I agree with the latter and fly it a few more times and keep a check on the
oil filters. If you keep seeing metal or the amount increases, and based o
n the oil analysis, I would then make a decision to continue flying or repl
ace the engine
Has anyone ever heard of an engine bearing failure or engine failure period
in the L29? Not being a smart ass, but just curious if an engine has ever
failed. I don't see any engine faillures in any of the accident reports
TonyA&P/IA=C2-
On Saturday, March 4, 2017 11:49 PM, "sd737@aol.com" <sd737@aol.com> wr
ote:
Metal in your oil is not a good thing, no matter what engine your talking
about.There's a reason it's there and most likely it won't just go away.Run
ning the engine with metal present will only distribute the metal throughou
t the engine and damage components until you have some type of failure.Soun
ds like the best course of action is a new motor.The M701 is cheap compared
to compromising your health, safety and well being.
I can help you with a new M701-500
-----Original Message-----
From: Anthony Royal <skyking76t@verizon.net>
Sent: Sat, Mar 4, 2017 06:50 PM
Subject: Re: L29-List: Metal In Oil Filters
I have to add I have never found any metal in my oil filter screens. A litt
le carbon but other than that always been clean
On Saturday, March 4, 2017 8:28 PM, Bill Culberson <migfighter42@gmail.
com> wrote:
I have to say, I would not fly it until you had absolute confidence that th
e engine was not making metal. I would tie it down and fun it for a WHILE
=C2- at flying RPMs and then see how the filter/ oil analysis works, don'
t fly till your sure.
The L-29 is one of the best flying jet trainers in the world with the best
safety record. Don't be a statistic.
Bill Culberson
Red Star Aero Services
N39DE
Sent from my iPhone
> On Mar 4, 2017, at 1:18 AM, DangerJet <apredictableecho@gmail.com> wrote:
>
>
> After the first flight of my plane (since import), and the associated lon
g duration high power engine run, I drained the oil, and removed and cleane
d the filters. The oil was free of any visible FOD, (sample sent for oil an
alysis), but when I washed the 3 filters I did find a number (maybe 15 part
icles per filter) of very small (barely visible) metal pieces. They were cl
early ferrous (they stuck to my magnet).
> Should I be worried? The airplane sat for a lot of years before this run.
>
> The temps and pressures are all good, and the EGT is good. The spooldown
takes a while (indicated not damaged bearings), but there is a noise on spo
oldown (almost like a clicking) below ~200 rpm, audible from near the inlet
s.
>
> I am concerned about potential corrosion/damage to the bearings from sitt
ing, any thoughts?
>
> My current plan is to do another engine run, another flight (less than 30
minutes), come back, and drain the oil again to see if more metal has accu
mulated. Is this reasonable?
>
> Thanks!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=466849#466849
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: Metal In Oil Filters |
Tony,
Yeah, I was reading through Lycoming's guide for acceptable metal contents (the
only official reference I could find on the subject of metal in oil). Speaking
to some jet engine mechanics at work, they all seem to agree that the engine
needs to run more and then be checked again.
Before I first ran it, I motored it a number of times over the course of a couple
days to get oil pressure up. It had sat for at least 12 years from my understanding.
Thanks for your replies everyone, I will keep you posted!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466890#466890
Message 4
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Whether a new engine or an old one, if the engine has sat for an extended p
eriod of time there is the possibility of corrosion in the bearings. About
the only two real problems with the M701p is case seal failure causing a bi
g oil leak or bearing corrosion/ eventual sieze up.Even a zero time overhau
l engine could suffer this fate if storage pod was not kept sealed properly
. =C2- =C2-Beware new engines in pod if the rubber seal is gone. I woul
d run the engine more (on the ground) keep checking oil. =C2-Just my opin
ion=C2-
Message 5
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| Subject: | Re: Metal In Oil Filters |
Hand picked all 37 29/39s.
> On Mar 5, 2017, at 07:17, Anthony Royal <skyking76t@verizon.net>
wrote:
>
> That you did, my friend. Been a great aircraft.
>
> Did you go to the Czech Republic to pick out the aircraft? I believe
Rick Worringer said you did.
>
>
> On Saturday, March 4, 2017 11:41 PM, William Geipel <l129bs@gmail.com>
wrote:
>
>
> That=99s because I imported only top-o-the-line jets.
> IMHO
>
> We paid extra for the carbon.
>
>> On Mar 4, 2017, at 19:46, Anthony Royal <skyking76t@verizon.net
<mailto:skyking76t@verizon.net>> wrote:
>>
>> I have to add I have never found any metal in my oil filter screens.
A little carbon but other than that always been clean
>>
>>
>> On Saturday, March 4, 2017 8:28 PM, Bill Culberson
<migfighter42@gmail.com <mailto:migfighter42@gmail.com>> wrote:
>>
>>
<migfighter42@gmail.com <mailto:migfighter42@gmail.com>>
>>
>> I have to say, I would not fly it until you had absolute confidence
that the engine was not making metal. I would tie it down and fun it for
a WHILE at flying RPMs and then see how the filter/ oil analysis works,
don't fly till your sure.
>>
>> The L-29 is one of the best flying jet trainers in the world with the
best safety record. Don't be a statistic.
>>
>> Bill Culberson
>> Red Star Aero Services
>> N39DE
>>
>> Sent from my iPhone
>>
>> > On Mar 4, 2017, at 1:18 AM, DangerJet <apredictableecho@gmail.com
<mailto:apredictableecho@gmail.com>> wrote:
>> >
<apredictableecho@gmail.com <mailto:apredictableecho@gmail.com>>
>> >
>> > After the first flight of my plane (since import), and the
associated long duration high power engine run, I drained the oil, and
removed and cleaned the filters. The oil was free of any visible FOD,
(sample sent for oil analysis), but when I washed the 3 filters I did
find a number (maybe 15 particles per filter) of very small (barely
visible) metal pieces. They were clearly ferrous (they stuck to my
magnet).
>> > Should I be worried? The airplane sat for a lot of years before
this run.
>> >
>> > The temps and pressures are all good, and the EGT is good. The
spooldown takes a while (indicated not damaged bearings), but there is a
noise on spooldown (almost like a clicking) below ~200 rpm, audible from
near the inlets.
>> >
>> > I am concerned about potential corrosion/damage to the bearings
from sitting, any thoughts?
>> >
>> > My current plan is to do another engine run, another flight (less
than 30 minutes), come back, and drain the oil again to see if more
metal has accumulated. Is this reasonable?
>> >
>> > Thanks!
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=466849#466849
<http://forums.matronics.com/viewtopic.php?p=466849#466849>
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>
>
>
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