Today's Message Index:
----------------------
1. 04:12 AM - Re: Jabiru rocker oil pressure fix (selwyn)
2. 04:14 AM - Fw: JabiruEngine-List: Re: worn valve guides (Tex Mantell)
3. 04:31 AM - Re: JabiruEngine-List: Re: worn valve guides (Tex Mantell)
4. 04:47 AM - Re: Re: Jabiru rocker oil pressure fix (Tex Mantell)
5. 07:05 AM - Call for newsletter articles (Mark Stauffer)
6. 08:49 AM - Whats this? (Nick Otterback)
7. 09:48 AM - Re: Whats this? (Maxim Voronin)
8. 09:59 AM - Re: Whats this? (Mefford, Walt)
9. 10:09 AM - Re: Whats this? (Nick Otterback)
10. 12:35 PM - First Composite Pedal Kitplane (Creative Eagles Corp)
11. 02:24 PM - Re: Whats this? (Dennis W. Wilt)
12. 09:57 PM - Re: Call for newsletter articles (Geoff Eather)
Message 1
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| Subject: | Re: Jabiru rocker oil pressure fix |
Hi Tex,
I don't know about this one. I looked at it a while back when I was just getting
towards flight ready but couldn't convince myself that it was worth doing anything.
Bearing in mind that all the heads are the same then the relationship between valves
and oil feeds varies from front to back and from side to side so if you
are getting similar wear patterns on all six then its possibly not oil feed.
If there is oil in the rocker boxes then it is going to be splashed about by the
rockers, springs and everything else thrashing about so I can't see anything
is going to be dry. Also, given the temperatures involved I'm not sure how
far oil would get down the exhaust valve guide, maybe someone can comment on that.
The responses to venting the rocker boxes mentioned in the first link seem a little
unusual to me given that Jabiru say that the rocker boxes are under negative
pressure.
Effectively in the six cylinder there is a gallery which runs through the heads
fed by two oil pipes from the block with two outlets in each rocker box and sealed
at the front and back of the engine by small welch plugs. Each rocker box
also vents through the pushrod tubes. All this should mean that there is not
much differential pressure between the boxes which means that there should
not be much reason for differential feed and good opportunity for any oil which
gets into the gallery to be distributed along the engine. It doesn't seem to
me that its all going to run out one end or the other but it is possible I guess.
I suppose the mod to the oil feed plugs in the crankcase to increase oil flow as
in the second link would be easy enough but I think I would be looking elsewhere.
I guess it is possible that there is a dodgy batch of valves or guides
out there. If oil supply is the issue you should also see the effects on the
rocker wear face where it contacts the valve and in wear on the rocker bush /
shaft although wear in the bush seems to be pretty much the "normal" condition.
Sorry if this is a bit of an unfocussed ramble but I hope it is some help.
--------
Cheers, Selwyn
Kit 66 VH-ELZ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368334#368334
Message 2
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| Subject: | Re: Fw: JabiruEngine-List: Re: worn valve guides |
----- Original Message -----
From: "xair899" <nickgeh@eircom.net>
Sent: Tuesday, March 13, 2012 3:59 AM
Subject: JabiruEngine-List: Re: worn valve guides
> --> JabiruEngine-List message posted by: "xair899" <nickgeh@eircom.net>
>
> Tex,
> Here in the UK guides were found "worn" at less than 50hrs. Careful
> measurement showed they were exactly 7.50mm bore, where the standard guide
> should be 7.05mm. Looks suspiciously like human error!
> Once the batch passed through the system, that particular problem went
> away. Not sure what serial number engines were affected.
> The majority of the oil fed to the heads is dumped on the inlet valve
> rather than the exhaust which really needs it. Try to persuade it to go
> where it would do more good - see Jabiru info on French site "Contrails"
> for some ideas.
>
> Nick
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=368330#368330
>
>
>
Message 3
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| Subject: | Re: JabiruEngine-List: Re: worn valve guides |
Nick, thanks for the info. Have come to the same conclusion that the guides
were oversize for all the cylinders wore the same. Again thanks for the
info. Tex
----- Original Message -----
From: "xair899" <nickgeh@eircom.net>
Sent: Tuesday, March 13, 2012 3:59 AM
Subject: JabiruEngine-List: Re: worn valve guides
> --> JabiruEngine-List message posted by: "xair899" <nickgeh@eircom.net>
>
> Tex,
> Here in the UK guides were found "worn" at less than 50hrs. Careful
> measurement showed they were exactly 7.50mm bore, where the standard guide
> should be 7.05mm. Looks suspiciously like human error!
> Once the batch passed through the system, that particular problem went
> away. Not sure what serial number engines were affected.
> The majority of the oil fed to the heads is dumped on the inlet valve
> rather than the exhaust which really needs it. Try to persuade it to go
> where it would do more good - see Jabiru info on French site "Contrails"
> for some ideas.
>
> Nick
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=368330#368330
>
>
>
Message 4
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| Subject: | Re: Jabiru rocker oil pressure fix |
Selwyn, thanks for your reply an I am sure that its just oversized guides
that were installed in the engine. I seen the burnt area around the exhaust
values the first time I checked the heads. And its the same on all cylinders
which makes me think its not the amount of oil reaching the valves. Its just
leaking around the guides. Will keep you posted on what is happing and again
thanks for your reply.
Tex
----- Original Message -----
From: "selwyn" <selwyn@ellisworks.com.au>
Sent: Tuesday, March 13, 2012 7:12 AM
Subject: Lightning-List: Re: Jabiru rocker oil pressure fix
>
> Hi Tex,
>
> I don't know about this one. I looked at it a while back when I was just
> getting towards flight ready but couldn't convince myself that it was
> worth doing anything.
>
> Bearing in mind that all the heads are the same then the relationship
> between valves and oil feeds varies from front to back and from side to
> side so if you are getting similar wear patterns on all six then its
> possibly not oil feed. If there is oil in the rocker boxes then it is
> going to be splashed about by the rockers, springs and everything else
> thrashing about so I can't see anything is going to be dry. Also, given
> the temperatures involved I'm not sure how far oil would get down the
> exhaust valve guide, maybe someone can comment on that.
>
> The responses to venting the rocker boxes mentioned in the first link seem
> a little unusual to me given that Jabiru say that the rocker boxes are
> under negative pressure.
>
> Effectively in the six cylinder there is a gallery which runs through the
> heads fed by two oil pipes from the block with two outlets in each rocker
> box and sealed at the front and back of the engine by small welch plugs.
> Each rocker box also vents through the pushrod tubes. All this should
> mean that there is not much differential pressure between the boxes which
> means that there should not be much reason for differential feed and good
> opportunity for any oil which gets into the gallery to be distributed
> along the engine. It doesn't seem to me that its all going to run out one
> end or the other but it is possible I guess.
>
> I suppose the mod to the oil feed plugs in the crankcase to increase oil
> flow as in the second link would be easy enough but I think I would be
> looking elsewhere. I guess it is possible that there is a dodgy batch of
> valves or guides out there. If oil supply is the issue you should also
> see the effects on the rocker wear face where it contacts the valve and in
> wear on the rocker bush / shaft although wear in the bush seems to be
> pretty much the "normal" condition.
>
> Sorry if this is a bit of an unfocussed ramble but I hope it is some help.
>
> --------
> Cheers, Selwyn
> Kit 66 VH-ELZ
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=368334#368334
>
>
>
Message 5
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| Subject: | Call for newsletter articles |
Hello all,
I'm looking for newsletter articles for the March/April newsletter. The
feature story will be on Sun n Fun but I'd like to see some articles of
flights our flying customers have taken, some tips and tricks from our
builders, and just anything in general that you think others may find
interesting.
Please send them directly to me at mark@flylightning.net . If you send
pictures please send them as attachments rather than imbedded in the body of
the email - it makes it a lot easier to insert into the newsletter.
Thanks for your help and please remember your contributions are what make a
great newsletter.
Best regards,
Mark
Mark Stauffer
Production Manager
Arion Aircraft, LLC
2842 Highway 231 North
Shelbyville, TN 37160
(931) 680-1781
Message 6
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Doing some flight testing on our new demo, whats this?
Nick
Sent from my pocket
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 7
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Uhhh... Bugs on the leading edge?
On Tue, Mar 13, 2012 at 11:47 AM, Nick Otterback <vettin74@yahoo.com> wrote:
>
>
> Doing some flight testing on our new demo, whats this?
>
> Nick
>
> Sent from my pocket
> <pre><b><font size=2 color="#000000" face="courier new,courier">
>
> http://www.matronics.com/Navigator?Lightning-List</a>
> http://forums.matronics.com</a>
> http://www.matronics.com/contribution</a>
>
> </b></font></pre>
>
Message 8
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In Oregon we would call that mold or did someone fly under a flock of geese
?
Walt M.
N881WP
From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-lis
t-server@matronics.com] On Behalf Of Maxim Voronin
Sent: Tuesday, March 13, 2012 9:42 AM
Subject: Re: Lightning-List: Whats this?
Uhhh... Bugs on the leading edge?
On Tue, Mar 13, 2012 at 11:47 AM, Nick Otterback <vettin74@yahoo.com<mailto
:vettin74@yahoo.com>> wrote:
Doing some flight testing on our new demo, whats this?
Nick
Sent from my pocket
<pre><b><font size=2 color="#000000" face=&q:
s.com/Navigator?Lightning-List" target="_blank">http://www.matronics.com/
Navigator?Lightning-List">http://www.matronics.com/Navigator?Lightning-List
</a>
="http://forums.matronics.com/" target="_blank">http://forums.matronics
.com">http://forums.matronics.com<http://forums.matronics.com/></a>
Matt Dralle, List Admin.
tribution" target="_blank">http://www.matronics.com/contribution">http://
www.matronics.com/contribution</a>
</b></font></pre>
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Message 9
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Yes they are on the leading of the tail. Just thought it was cool since this
tail never killed any bugs.
Nick
Sent from my pocket
On Mar 13, 2012, at 11:42 AM, Maxim Voronin <voroninmax@gmail.com> wrote:
> Uhhh... Bugs on the leading edge?
>
> On Tue, Mar 13, 2012 at 11:47 AM, Nick Otterback <vettin74@yahoo.com> wrot
e:
>
>
>
>
> Doing some flight testing on our new demo, whats this?
>
> Nick
>
> Sent from my pocket
> <pre><b><font size=2 color="#000000" face=&q:
> s.com/Navigator?Lightning-List" target="_blank">http://www.matronics.com
/Navigator?Lightning-List">http://www.matronics.com/Navigator?Lightning-List
</a>
> ="http://forums.matronics.com/" target="_blank">http://forums.matronic
s.com">http://forums.matronics.com</a>
> Matt Dralle, List Admin.
> tribution" target="_blank">http://www.matronics.com/contribution">http:/
/www.matronics.com/contribution</a>
> ==========
>
> </b></font></pre>
>
>
>
==========================
=========
==========================
=========
==========================
=========
==========================
=========
>
Message 10
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| Subject: | First Composite Pedal Kitplane |
Good day everyone!
I thought that I mention here that the First Composite Pedal Kitplane is now
available!
The first GOTCHA!
Gotcha3.jpg
Gotcha Composite Pedal Kitplane turns your kids tricycle into something
wonderful and exciting rides. The Gotcha composite pedal kitplane is a
bolt-in project into your kids existing tricycle. The kit consist of the
fuselage, the propeller, seat back, wings, horizontal stabilizer and
hardwares.
Build your Gotcha now and enjoy watching your young pilots as they fly
around the neighborhood. Their smile will touch your heart!
Website creative-eagles.com or contact at info@creative-eagles.com
Triple w dot Creative-eagles dot com
Gotcha Pedal Plane.JPG
Unleash your young eagles and let them enjoy the power of flight.
Enjoy!
Message 11
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I would say grass stains or mud. Are you using a grass runway?
Dennis
N616DW (Arion Lightning S/N 132)
-----Original Message-----
From: Nick Otterback <vettin74@yahoo.com>
Sent: Tue, Mar 13, 2012 11:53 am
Subject: Lightning-List: Whats this?
oing some flight testing on our new demo, whats this?
Nick
Sent from my pocket
pre><b><font size=2 color="#000000" face="courier new,courier">
-= - The Lightning-List Email Forum -
-= Use the Matronics List Features Navigator to browse
-= the many List utilities such as List Un/Subscription,
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-= --> <a href="http://www.matronics.com/Navigator?Lightning-List">ht
tp://www.matronics.com/Navigator?Lightning-List</a>
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-========================
-= - MATRONICS WEB FORUMS -
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Message 12
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| Subject: | Re: Call for newsletter articles |
Mark,
Newsletter Idea:
Not sure who had the original idea but I'm sure a lot of people would
appreciate an article on main wheel alignment. I had a friend visit
yesterday who has had all sorts of problems setting up his main wheels
with strings, T squares, rulers etc. He couldn't believe how simple,
accurate and quick the dowels up the axles idea was. Jason originally
showed me how it was done when I was there in March last year. Maybe
Jason could write the article?
Cheers
Geoff Eather (Kit 127)
PS: Flap bracket finally arrived yesterday.
On 14/03/2012, at 1:03 AM, Mark Stauffer wrote:
> Hello all,
>
> I=92m looking for newsletter articles for the March/April newsletter.
The feature story will be on Sun n Fun but I=92d like to see some
articles of flights our flying customers have taken, some tips and
tricks from our builders, and just anything in general that you think
others may find interesting.
>
> Please send them directly to me at mark@flylightning.net . If you send
pictures please send them as attachments rather than imbedded in the
body of the email ' it makes it a lot easier to insert into the
newsletter.
>
> Thanks for your help and please remember your contributions are what
make a great newsletter.
>
> Best regards,
>
> Mark
>
> Mark Stauffer
> Production Manager
> Arion Aircraft, LLC
> 2842 Highway 231 North
> Shelbyville, TN 37160
> (931) 680-1781
>
>
>
>
>
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