---------------------------------------------------------- L29-List Digest Archive --- Total Messages Posted Sat 03/04/17: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:45 PM - Re: Metal In Oil Filters (Anthony Royal) 2. 05:24 PM - Re: Metal In Oil Filters (Bill Culberson) 3. 06:41 PM - Re: Metal In Oil Filters (cmoersch3) 4. 06:50 PM - Re: Metal In Oil Filters (Anthony Royal) 5. 08:39 PM - Re: Metal In Oil Filters (William Geipel) 6. 08:46 PM - Re: Metal In Oil Filters (sd737@aol.com) ________________________________ Message 1 _____________________________________ Time: 03:45:40 PM PST US From: Anthony Royal Subject: Re: L29-List: Metal In Oil Filters My L29 was imported in 1994 and sat assembled in a hangar and not flown fro m 1994 until I bought it in 2010. When I bought it, I serviced the systems and flew it half way across the US to home and been flying for 7 years now with no problems.=C2-=C2-My L29 was never a box or field queen so don't know if that might have made a difference. Engines are bullet proof. On Saturday, March 4, 2017 1:21 AM, DangerJet wrote: 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 anal ysis), but when I washed the 3 filters I did find a number (maybe 15 partic les per filter) of very small (barely visible) metal pieces. They were clea rly 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 ta kes a while (indicated not damaged bearings), but there is a noise on spool down (almost like a clicking) below ~200 rpm, audible from near the inlets. I am concerned about potential corrosion/damage to the bearings from sittin g, any thoughts? My current plan is to do another engine run, another flight (less than 30 m inutes), come back, and drain the oil again to see if more metal has accumu lated. Is this reasonable? Thanks! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=466849#466849 S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 2 _____________________________________ Time: 05:24:29 PM PST US From: Bill Culberson Subject: Re: L29-List: Metal In Oil Filters 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 wrote: > > > 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 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 06:41:57 PM PST US From: cmoersch3 Subject: Re: L29-List: Metal In Oil Filters Christian Sent from my iPhone > On Mar 4, 2017, at 20:23, Bill Culberson wrote: > > > I have to say, I would not fly it until you had absolute confidence that t he engine was not making metal. I would tie it down and fun it for a WHILE a t flying RPMs and then see how the filter/ oil analysis works, don't fly til l 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 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 cleaned the filters. The oil was free of any visible FOD, (sample sent for oil anal ysis), but when I washed the 3 filters I did find a number (maybe 15 particl es per filter) of very small (barely visible) metal pieces. They were clearl y 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 t akes a while (indicated not damaged bearings), but there is a noise on spool down (almost like a clicking) below ~200 rpm, audible from near the inlets. >> >> 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 accum ulated. Is this reasonable? >> >> Thanks! >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=466849#466849 >> >> >> >> >> >> >> >> >> > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > > > ________________________________ Message 4 _____________________________________ Time: 06:50:41 PM PST US From: Anthony Royal 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 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 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 > > > > > > > > > S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 5 _____________________________________ Time: 08:39:22 PM PST US From: William Geipel Subject: Re: L29-List: Metal In Oil Filters 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 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 wrote: > > > > > 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 > wrote: > > > > > > > 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 > > > > > > > > > > > > > > > > ________________________________ Message 6 _____________________________________ Time: 08:46:11 PM PST US From: sd737@aol.com Subject: Re: L29-List: Metal In Oil Filters 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. Running the engine with metal present will only distribute the metal throughout the engine and damage components until you have some type of failure. Sounds 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 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 little 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 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> wrote: > > > 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 > > > > > > > >
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