Today's Message Index:
----------------------
1. 02:07 AM - Re: Re: Radio interference (Geoff Leedham)
2. 06:08 AM - Re: Re: Jabiru Muffler Failure (nick otterback)
3. 06:47 AM - Re: Re: Jabiru Muffler Failure ()
4. 06:51 AM - Re: Re: Jabiru Muffler Failure (japhillipsga@aol.com)
5. 06:55 AM - Re: Re: Jabiru Muffler Failure (japhillipsga@aol.com)
6. 10:13 AM - Re: Re: Jabiru Muffler Failure (T. Graziano)
7. 01:18 PM - Re: Re: Re: Jabiru Muffler Failure (japhillipsga@aol.com)
8. 01:38 PM - Re: Re: Re: Jabiru Muffler Failure (Jabiru USA)
9. 04:43 PM - Re: Re: Re: Jabiru Muffler Failure (JAPhillipsGA@aol.com)
10. 09:05 PM - Re: Radio interference (jetboy)
Message 1
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| Subject: | Re: Radio interference |
Hi Ralph
Thanks for the reply. When you replaced the leads did you replace the ones
from the coils to the distributer caps? The plug leads on my engine are
marked as suppressed but not the coil leads. Have you replaced the NGK plugs
with resistor types?
Geoff
----- Original Message -----
From: "jetboy" <sanson.r@xtra.co.nz>
Sent: Wednesday, January 17, 2007 7:40 AM
Subject: JabiruEngine-List: Re: Radio interference
>
> Geoff,
> I just posted some info and plots of radiated noise from HT leads
> on
>
> http://groups.yahoo.com/group/jabiruengines/message/16729
>
> This might help although in your case it might also be alternator
> regulator noise.
> I have shielded 'P' leads which made no apparent difference. The major
> cause for me is the HT leads and I have yet to try shielding or ferrite
> bead loading of the coil leads. Fitting the Bosch leads in place of the
> factory ones made the largest improvement. I use a Bendixking KY96A which
> is same as the A200.
>
> Ralph
>
> --------
> Ralph - CH701 / 2200a
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=88227#88227
>
>
> --
> 15/01/2007 11:04
>
>
Message 2
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| Subject: | Re: Jabiru Muffler Failure |
how long are the tail pipes out the bottom of the cowl?
Nick
JAPhillipsGA@aol.com wrote:
Dear Thread Friends, Last week after a short flight I was relocating my super
duper homebuilt preheater under the cowl when I touched the left exhaust pipe
and it moved. I removed the cowl and inspected and found two cracks had formed
in the muffler, one above, one below the exit pipe from the welds. I removed
the muffler and then I saw what I am reporting as a failure. All the metal guts
from the inside fell out. The metal screen inside the muffler had disintegrated
into little chunks of steel. The inside part must not be made of stainless
steel ???? I fished them all out and made two gussets from 18 gauge stainless
stock and TIG welded them to the exit pipes to strengthen them and repaired
the cracks. I did my 100 hour at Christmas, but missed any cracks, if they were
there. What really jerks my chain is I have only 101 hours on the engine when
the thing failed. I wonder what would have happened to my 3300, my plane and
my butt if a couple solid corner chunks stopped up
an exit pipe in flight ??? All you Jab guys check your mufflers. Jab put out a
SB some time back on the inlet pipe connectors cracking because the welds were
MIG not TIG, but nothing on the inside being eaten away, Bet regards, Bill of
Georgia N505WP, 601XL-3300
---------------------------------
Food fight? Enjoy some healthy debate
in the Yahoo! Answers Food & Drink Q&A.
Message 3
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| Subject: | Re: Jabiru Muffler Failure |
When questioned on this issue, Jabiru USA will certainly ask when the engine and
muffler were bought and probably offer that some improvement has been made since
then. So when was engine delivered Bill?
Ed Moody II
---- nick otterback <vettin74@yahoo.com> wrote:
> how long are the tail pipes out the bottom of the cowl?
>
> Nick
>
> JAPhillipsGA@aol.com wrote:
> Dear Thread Friends, Last week after a short flight I was relocating my super
duper homebuilt preheater under the cowl when I touched the left exhaust pipe
and it moved. I removed the cowl and inspected and found two cracks had formed
in the muffler, one above, one below the exit pipe from the welds. I removed
the muffler and then I saw what I am reporting as a failure. All the metal
guts from the inside fell out. The metal screen inside the muffler had disintegrated
into little chunks of steel. The inside part must not be made of stainless
steel ???? I fished them all out and made two gussets from 18 gauge stainless
stock and TIG welded them to the exit pipes to strengthen them and repaired
the cracks. I did my 100 hour at Christmas, but missed any cracks, if they were
there. What really jerks my chain is I have only 101 hours on the engine when
the thing failed. I wonder what would have happened to my 3300, my plane and
my butt if a couple solid corner chunks stopped up
> an exit pipe in flight ??? All you Jab guys check your mufflers. Jab put out
a SB some time back on the inlet pipe connectors cracking because the welds were
MIG not TIG, but nothing on the inside being eaten away, Bet regards, Bill
of Georgia N505WP, 601XL-3300
>
>
>
> ---------------------------------
> Food fight? Enjoy some healthy debate
> in the Yahoo! Answers Food & Drink Q&A.
Message 4
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| Subject: | Re: Jabiru Muffler Failure |
Nick, I'm not at the airport, but I think they are about 16-18 inches long. Bill
-----Original Message-----
From: vettin74@yahoo.com
Sent: Thu, 18 Jan 2007 9:08 AM
Subject: Re: JabiruEngine-List: Re: Jabiru Muffler Failure
how long are the tail pipes out the bottom of the cowl?
Nick
JAPhillipsGA@aol.com wrote:
Dear Thread Friends, Last week after a short flight I was relocating my super duper
homebuilt preheater under the cowl when I touched the left exhaust pipe and
it moved. I removed the cowl and inspected and found two cracks had formed
in the muffler, one above, one below the exit pipe from the welds. I removed the
muffler and then I saw what I am reporting as a failure. All the metal guts
from the inside fell out. The metal screen inside the muffler had disintegrated
into little chunks of steel. The inside part must not be made of stainless
steel ???? I fished them all out and made two gussets from 18 gauge stainless
stock and TIG welded
Food fight? Enjoy some healthy debate
in the Yahoo! Answers Food & Drink Q&A.
________________________________________________________________________
Message 5
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| Subject: | Re: Jabiru Muffler Failure |
Ed, I can't really remember when I received the engine. I would have to look in
my log for sure, but I think spring/summer of '04 ? How's your building coming
along? Well, I hope. Best regards, Bill
-----Original Message-----
From: dredmoody@cox.net
Sent: Thu, 18 Jan 2007 9:46 AM
Subject: Re: JabiruEngine-List: Re: Jabiru Muffler Failure
When questioned on this issue, Jabiru USA will certainly ask when the engine and
muffler were bought and probably offer that some improvement has been made since
then. So when was engine delivered Bill?
Ed Moody II
---- nick otterback <vettin74@yahoo.com> wrote:
> how long are the tail pipes out the bottom of the cowl?
>
> Nick
>
> JAPhillipsGA@aol.com wrote:
> Dear Thread Friends, Last week after a short flight I was relocating my
super duper homebuilt preheater under the cowl when I touched the left exhaust
pipe and it moved. I removed the cowl and inspected and found two cracks had
formed in the muffler, one above, one below the exit pipe from the welds. I
removed the muffler and then I saw what I am reporting as a failure. All the
metal guts from the inside fell out. The metal screen inside the muffler had
disintegrated into little chunks of steel. The inside part must not be made of
stainless steel ???? I fished them all out and made two gussets from 18 gauge
stainless stock and TIG welded them to the exit pipes to strengthen them and
repaired the cracks. I did my 100 hour at Christmas, but missed any cracks, if
they were there. What really jerks my chain is I have only 101 hours on the
engine when the thing failed. I wonder what would have happened to my 3300, my
plane and my butt if a couple solid corner chunks stopped up
> an exit pipe in flight ??? All you Jab guys check your mufflers. Jab put out
a SB some time back on the inlet pipe connectors cracking because the welds were
MIG not TIG, but nothing on the inside being eaten away, Bet regards, Bill of
Georgia N505WP, 601XL-3300
>
>
>
> ---------------------------------
> Food fight? Enjoy some healthy debate
> in the Yahoo! Answers Food & Drink Q&A.
________________________________________________________________________
Message 6
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| Subject: | Re: Re: Jabiru Muffler Failure |
Bill,
I may be wrong, but I believe that the inside of the muffler has
no "Screens". The outlet pipes though have a bunch of holes in the area
inside of the muffler (like piccolo tubes).
When I received my FWF from Jab USA, the outlet pipes were not
welded to the muffler, nor were there any holes for fitting the outlet
pipes into the muffler. One end of the outlet pipes was capped closed.
I aked Pete about this and he said that it was in case anyone
wished to weld the outlets themselves and for other
configurations/installations. He said he would have them welded for the
XL, so I sent the muffler and outlet pipes back to Pete and he returned
them TIG welded. The "forward/capped closed" ends of the outlet pipes
were fillet welded to the muffler after a hole was cut in the muffler,
along with a fillet weld around the outlet hole at the aft exit
circumference.
Is possible you had the muffler "holed" and the outlet pipes
welded locally? Were your outlets welded at both ends?
Tony Graziano
Zodiac 601XL/Jab3300A; N493TG; 195 hrs
From: japhillipsga@aol.com
Date: Thu Jan 18 - 6:55 AM
Ed, I can't really remember when I received the engine. I would have to
look in
my log for sure, but I think spring/summer of '04 ? How's your building
coming
along? Well, I hope. Best regards, Bill
-----Original Message-----
From: dredmoody@cox.net
Sent: Thu, 18 Jan 2007 9:46 AM
Subject: Re: Re: Jabiru Muffler Failure
When questioned on this issue, Jabiru USA will certainly ask when the
engine and
muffler were bought and probably offer that some improvement has been
made since
then. So when was engine delivered Bill?
Ed Moody II
---- nick otterback <vettin74@yahoo.com> wrote:
> how long are the tail pipes out the bottom of the cowl?
>
> Nick
>
> JAPhillipsGA@aol.com wrote:
> Dear Thread Friends, Last week after a short flight I was relocating
my
super duper homebuilt preheater under the cowl when I touched the left
exhaust
pipe and it moved. I removed the cowl and inspected and found two cracks
had
formed in the muffler, one above, one below the exit pipe from the
welds. I
removed the muffler and then I saw what I am reporting as a failure. All
the
metal guts from the inside fell out. The metal screen inside the muffler
had
disintegrated into little chunks of steel. The inside part must not be
made of
stainless steel ???? I fished them all out and made two gussets from 18
gauge
stainless stock and TIG welded them to the exit pipes to strengthen them
and
repaired the cracks. I did my 100 hour at Christmas, but missed any
cracks, if
they were there. What really jerks my chain is I have only 101 hours on
the
engine when the thing failed. I wonder what would have happened to my
3300, my
plane and my butt if a couple solid corner chunks stopped up
> an exit pipe in flight ??? All you Jab guys check your mufflers. Jab
put out
a SB some time back on the inlet pipe connectors cracking because the
welds were
MIG not TIG, but nothing on the inside being eaten away, Bet regards,
Bill of
Georgia N505WP, 601XL-3300
Message 7
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| Subject: | Re: Re: Jabiru Muffler Failure |
Tony, The inlet holes that the manifold pipes slide into were welded. The outlet
holes, I had to cut and have the pipes TIG welded into place. The baffle screen
was visible inside the "can" when I made the two holes. The baffle screen
is what disintegrated into chunks about quarter to .50 cent size pieces. Good
to hear from you and hope your doing well, Best regards, Bill
-----Original Message-----
From: tonyplane@bellsouth.net
Sent: Thu, 18 Jan 2007 1:13 PM
Subject: JabiruEngine-List: Re: Re: Jabiru Muffler Failure
Bill,
I may be wrong, but I believe that the inside of the muffler has no "Screens".
The outlet pipes though have a bunch of holes in the area inside of the muffler
(like piccolo tubes).
When I received my FWF from Jab USA, the outlet pipes were not welded to the muffler,
nor were there any holes for fitting the outlet pipes into the muffler.
One end of the outlet pipes was capped closed.
I aked Pete about this and he said that it was in case anyone wished to weld the
outlets themselves and for other configurations/installations. He said he
would have them welded for the XL, so I sent the muffler and outlet pipes back
to Pete and he returned them TIG welded. The "forward/capped closed" ends of
the outlet pipes were fillet welded to the muffler after a hole was cut in the
muffler, along with a fillet weld around the outlet hole at the aft exit circumference.
Is possible you had the muffler "holed" and the outlet pipes welded locally? Were
your outlets welded at both ends?
Tony Graziano
Zodiac 601XL/Jab3300A; N493TG; 195 hrs
From: japhillipsga@aol.com
Ed, I can't really remember when I received the engine. I would have to look in
my log for sure, but I think spring/summer of '04 ? How's your building coming
along? Well, I hope. Best regards, Bill
-----Original Message-----
From: dredmoody@cox.net
Sent: Thu, 18 Jan 2007 9:46 AM
Subject: Re: Re: Jabiru Muffler Failure
When questioned on this issue, Jabiru USA will certainly ask when the engine and
muffler were bought and probably offer that some improvement has been made since
then. So when was engine delivered Bill?
Ed Moody II
---- nick otterback <vettin74@yahoo.com> wrote:
> how long are the tail pipes out the bottom of the cowl?
>
> Nick
>
> JAPhillipsGA@aol.com wrote:
> Dear Thread Friends, Last week after a short flight I was relocating my
super duper homebuilt preheater under the cowl when I touched the left exhaust
pipe and it moved. I removed the cowl and inspected and found two cracks had
formed in the muffler, one above, one below the exit pipe from the welds. I
removed the muffler and then I saw what I am reporting as a failure. All the
metal guts from the inside fell out. The metal screen inside the muffler had
disintegrated into little chunks of steel. The inside part must not be made of
stainless steel ???? I fished them all out and made two gussets from 18 gauge
stainless stock and TIG welded them to the exit pipes to strengthen them and
repaired the cracks. I did my 100 hour at Christmas, but missed any cracks, if
they were there. What really jerks my chain is I have only 101 hours on the
engine when the thing failed. I wonder what would have happened to my 3300, my
plane and my butt if a couple solid corner chunks stopped up
> an exit pipe in flight ??? All you Jab guys check your mufflers. Jab put out
a SB some time back on the inlet pipe connectors cracking because the welds were
MIG not TIG, but nothing on the inside being eaten away, Bet regards, Bill of
Georgia N505WP, 601XL-3300
________________________________________________________________________
Message 8
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|
| Subject: | Re: Re: Jabiru Muffler Failure |
Bill,
Did you cut the holes all the way through the can so that the outlet was
welded on both sides of the can?
Pete
_____
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
japhillipsga@aol.com
Sent: Thursday, January 18, 2007 3:18 PM
Subject: Re: JabiruEngine-List: Re: Re: Jabiru Muffler Failure
Tony, The inlet holes that the manifold pipes slide into were welded. The
outlet holes, I had to cut and have the pipes TIG welded into place. The
baffle screen was visible inside the "can" when I made the two holes. The
baffle screen is what disintegrated into chunks about quarter to .50 cent
size pieces. Good to hear from you and hope your doing well, Best regards,
Bill
-----Original Message-----
From: tonyplane@bellsouth.net
Sent: Thu, 18 Jan 2007 1:13 PM
Subject: JabiruEngine-List: Re: Re: Jabiru Muffler Failure
Bill,
I may be wrong, but I believe that the inside of the muffler has no
"Screens". The outlet pipes though have a bunch of holes in the area inside
of the muffler (like piccolo tubes).
When I received my FWF from Jab USA, the outlet pipes were not welded to the
muffler, nor were there any holes for fitting the outlet pipes into the
muffler. One end of the outlet pipes was capped closed.
I aked Pete about this and he said that it was in case anyone wished to
weld the outlets themselves and for other configurations/installations. He
said he would have them welded for the XL, so I sent the muffler and outlet
pipes back to Pete and he returned them TIG welded. The "forward/capped
closed" ends of the outlet pipes were fillet welded to the muffler after a
hole was cut in the muffler, along with a fillet weld around the outlet
hole at the aft exit circumference.
Is possible you had the muffler "holed" and the outlet pipes welded locally?
Were your outlets welded at both ends?
Tony Graziano
Zodiac 601XL/Jab3300A; N493TG; 195 hrs
From:
japhillipsga@aol.com
<javascript:parent.ComposeTo('japhillipsga@aol.com',%20'?subject=Re:%20Re:%2
0Jabiru%20Muffler%20Failure&replyto=8C90927C72D2124-4F0-4775@MBLK-M23.sysops
.aol.com');>
Date:
Thu Jan 18 - 6:55 AM
Ed, I can't really remember when I received the engine. I would have to look
in
my log for sure, but I think spring/summer of '04 ? How's your building
coming
along? Well, I hope. Best regards, Bill
-----Original Message-----
From: dredmoody@cox.net
<javascript:parent.ComposeTo('dredmoody@cox.net',%20'?subject=Re:%20Re:%20Ja
biru%20Muffler%20Failure&replyto=8C90927C72D2124-4F0-4775@MBLK-M23.sysops.ao
l.com');>
<javascript:parent.ComposeTo('jabiruengine-list@matronics.com',%20'?subject
Re:%20Re:%20Jabiru%20Muffler%20Failure&replyto=8C90927C72D2124-4F0-4775@MBLK
-M23.sysops.aol.com');>
Sent: Thu, 18 Jan 2007 9:46 AM
Subject: Re: Re: Jabiru Muffler Failure
When questioned on this issue, Jabiru USA will certainly ask when the engine
and
muffler were bought and probably offer that some improvement has been made
since
then. So when was engine delivered Bill?
Ed Moody II
---- nick otterback <
<javascript:parent.ComposeTo('vettin74@yahoo.com',%20'?subject=Re:%20Re:%20J
abiru%20Muffler%20Failure&replyto=8C90927C72D2124-4F0-4775@MBLK-M23.sysops.a
ol.com');> vettin74@yahoo.com> wrote:
> how long are the tail pipes out the bottom of the cowl?
>
> Nick
>
> JAPhillipsGA@aol.com
<javascript:parent.ComposeTo('JAPhillipsGA@aol.com',%20'?subject=Re:%20Re:%2
0Jabiru%20Muffler%20Failure&replyto=8C90927C72D2124-4F0-4775@MBLK-M23.sysops
.aol.com');> wrote:
> Dear Thread Friends, Last week after a short flight I was relocating my
super duper homebuilt preheater under the cowl when I touched the left
exhaust
pipe and it moved. I removed the cowl and inspected and found two cracks had
formed in the muffler, one above, one below the exit pipe from the welds. I
removed the muffler and then I saw what I am reporting as a failure. All the
metal guts from the inside fell out. The metal screen inside the muffler had
disintegrated into little chunks of steel. The inside part must not be made
of
stainless steel ???? I fished them all out and made two gussets from 18
gauge
stainless stock and TIG welded them to the exit pipes to strengthen them and
repaired the cracks. I did my 100 hour at Christmas, but missed any cracks,
if
they were there. What really jerks my chain is I have only 101 hours on the
engine when the thing failed. I wonder what would have happened to my 3300,
my
plane and my butt if a couple solid corner chunks stopped up
> an exit pipe in flight ??? All you Jab guys check your mufflers. Jab put
out
a SB some time back on the inlet pipe connectors cracking because the welds
were
MIG not TIG, but nothing on the inside being eaten away, Bet regards, Bill
of
Georgia N505WP, 601XL-3300
_____
size=2 width="100%" align=center>
Message 9
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| Subject: | Re: Re: Jabiru Muffler Failure |
Pete, I had stainless steel sleeves similar to the inlet sleeves made and
welded to the can skin. Then the exit pipes welded into the sleeves. As to "all
the way through" the can, no it was not welded from behind. Could not have been
had I thought of it because the baffle shelf was welded inside the can and
blocked access to the back inside of the exit sleeves. I guess I could weld it
that way now that the baffle has disintegrated. Would you like for me to mail
you the chunks and bits I saved? Bill
Message 10
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| Subject: | Re: Radio interference |
Geoff,
You cannot easily change the coil leads, and they are wire.
I intend to shield one of them as an experiment and compare with the other. ferrite
beads may also be a trial.
I use standard plugs. there is some debate about resistor ones and NIX plugs, but
as my replacement ignition leads are already the correct resistance 3K - 8K
adding a further 5K at the plug would add little suppression but might allow
the coils to fail due to hihger voltages or the spark power to be weaker. Jabiru
dont allow resistor plugs.
I suspect the distributors also are a noise source.
When we used to suppress radio inspectors vehicles we had to shield everything.
That typically meant mounting a box around the distributor and sparkplugs and
relocating the coil inside the box. It made a RF quiet vehicle but hard to service.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=88767#88767
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