Today's Message Index:
----------------------
1. 04:55 AM - Re: Lightning Gear shimmy (selwyn)
2. 07:25 AM - Re: Re: Lightning Gear shimmy (flylightning)
3. 09:04 AM - Re: Re: Lightning Gear shimmy (FamilyGage@aol.com)
4. 01:59 PM - Re: Re: Lightning Gear shimmy (N1BZRich@AOL.COM)
5. 02:36 PM - Re: Lightning Newsletter for June 2010 (Bill Strahan)
Message 1
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Subject: | Re: Lightning Gear shimmy |
[quote="info(at)flylightning.net"] This was the reason for the move to the oilite
bushing in the nylon blocks. You can not put tension on the oilite bushing
but they will keep the pivot point true and free from wear.
Nick Otterback
> [b]
Um, which move to oilite bushings was that? I noticed the bushes in Buz's photos
and wondered where they came from. Its not in the build manual, no service
bulletins, can't find it anywhere on the Arion site, can't remember reading it
in the newsletter. What's the status of the change, is it part of ongoing development
or a recommended retrofit?
--------
Cheers, Selwyn
Kit 66
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299712#299712
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Subject: | Re: Lightning Gear shimmy |
About the beginning of the year I noticed a slight vibration in flight on
one of our planes. It felt as if it was coming from the nose I could feel it
in the pedals. After pushing down on the tail in the hanger, I noticed that
the nose block had a small amount of slop in it and the fork assembly could
be moved around a bit, this was not due to a suspicion of shimmy. I took the
fork off and thought about trying a large bushing. Because the steel leg and
the nylon are different materials I figured that the small trash or bur
might wear the plastic quickly and I think that is what happened. So I found
a large oilite bushing (oil bronze bushing) to put in the block. This did
take care of the slop and the vibration/buffeting in the nose wheel and pant
in flight. We than put in the news letter that if anyone noticed this in
their Lightning that this bushing could be retrofitted as a fix. True the
blocks should be tight so not to develop slop in the system but beyond that
the tension is not to combat a nose wheel shimmy the design itself is, the
the bushing to combat wear. We can release recommendations and things we
have noticed in the design thru the newsletter or web site to help make
things better. It would not be right for a kit manufacturer to issue an AD
or SB as we are not the manufacturer of the Aircraft the builder is and we
do not control their construction. So with that in mind we set it out in the
newsletter as a bring to everyone's attention type thing and have now added
the bushing to the kits and machined the blocks to match.
As a side note it is important to recognize the difference in the esqual
nose leg and the lightning. The esqual nose leg does have a vertical pivot
point, it is not swept forward. So the nose leg on an esqual with out the
blocks tightened can shimmy. Some later esqual's had lightning parts because
we got none from them.
Nick Otterback
-----Original Message-----
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of selwyn
Sent: Wednesday, June 02, 2010 6:55 AM
Subject: Lightning-List: Re: Lightning Gear shimmy
[quote="info(at)flylightning.net"] This was the reason for the move to the
oilite bushing in the nylon blocks. You can not put tension on the oilite
bushing but they will keep the pivot point true and free from wear.
Nick Otterback
> [b]
Um, which move to oilite bushings was that? I noticed the bushes in Buz's
photos and wondered where they came from. Its not in the build manual, no
service bulletins, can't find it anywhere on the Arion site, can't remember
reading it in the newsletter. What's the status of the change, is it part
of ongoing development or a recommended retrofit?
--------
Cheers, Selwyn
Kit 66
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299712#299712
Message 3
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Subject: | Re: Lightning Gear shimmy |
Nick:
Thanks so much for the information. I will try Buz's fix first, and if
there is no improvement; are the newer bushings available? I think that the
nose gear is Ligntning. I recently purchased two new main gear from you.
Everyone appreciates your factory support.
My Best,
Ray Gage
In a message dated 6/2/2010 10:25:38 A.M. Eastern Daylight Time,
info@flylightning.net writes:
--> Lightning-List message posted by: "fly lightning"
<info@flylightning.net>
About the beginning of the year I noticed a slight vibration in flight on
one of our planes. It felt as if it was coming from the nose I could feel
it
in the pedals. After pushing down on the tail in the hanger, I noticed that
the nose block had a small amount of slop in it and the fork assembly could
be moved around a bit, this was not due to a suspicion of shimmy. I took
the
fork off and thought about trying a large bushing. Because the steel leg
and
the nylon are different materials I figured that the small trash or bur
might wear the plastic quickly and I think that is what happened. So I
found
a large oilite bushing (oil bronze bushing) to put in the block. This did
take care of the slop and the vibration/buffeting in the nose wheel and
pant
in flight. We than put in the news letter that if anyone noticed this in
their Lightning that this bushing could be retrofitted as a fix. True the
blocks should be tight so not to develop slop in the system but beyond that
the tension is not to combat a nose wheel shimmy the design itself is, the
bushing to combat wear. We can release recommendations and things we
have noticed in the design thru the newsletter or web site to help make
things better. It would not be right for a kit manufacturer to issue an AD
or SB as we are not the manufacturer of the Aircraft the builder is and we
do not control their construction. So with that in mind we set it out in
the
newsletter as a bring to everyone's attention type thing and have now added
the bushing to the kits and machined the blocks to match.
As a side note it is important to recognize the difference in the esqual
nose leg and the lightning. The esqual nose leg does have a vertical pivot
point, it is not swept forward. So the nose leg on an esqual with out the
blocks tightened can shimmy. Some later esqual's had lightning parts
because
we got none from them.
Nick Otterback
-----Original Message-----
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of selwyn
Sent: Wednesday, June 02, 2010 6:55 AM
Subject: Lightning-List: Re: Lightning Gear shimmy
[quote="info(at)flylightning.net"] This was the reason for the move to the
oilite bushing in the nylon blocks. You can not put tension on the oilite
bushing but they will keep the pivot point true and free from wear.
Nick Otterback
> [b]
Um, which move to oilite bushings was that? I noticed the bushes in Buz's
photos and wondered where they came from. Its not in the build manual, no
service bulletins, can't find it anywhere on the Arion site, can't remember
reading it in the newsletter. What's the status of the change, is it part
of ongoing development or a recommended retrofit?
--------
Cheers, Selwyn
Kit 66
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299712#299712
Message 4
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Subject: | Re: Lightning Gear shimmy |
Hi Selwyn,
Check the December 2009 issue of the Lightning Newsletter for info on
the new bushings.
Buz
In a message dated 6/2/2010 7:56:15 A.M. Eastern Daylight Time,
selwyn@ellisworks.com.au writes:
--> Lightning-List message posted by: "selwyn" <selwyn@ellisworks.com.au>
[quote="info(at)flylightning.net"] This was the reason for the move to the
oilite bushing in the nylon blocks. You can not put tension on the oilite
bushing but they will keep the pivot point true and free from wear.
Nick Otterback
> [b]
Um, which move to oilite bushings was that? I noticed the bushes in Buz's
photos and wondered where they came from. Its not in the build manual, no
service bulletins, can't find it anywhere on the Arion site, can't remember
reading it in the newsletter. What's the status of the change, is it part
of ongoing development or a recommended retrofit?
--------
Cheers, Selwyn
Kit 66
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299712#299712
Message 5
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Subject: | Re: Lightning Newsletter for June 2010 |
Well, I thought long and hard and decided I needed to insert my feedback. :)
Another great newsletter!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299786#299786
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