Today's Message Index:
----------------------
1. 05:35 AM - Re: Lightning-List Digest: 1 Msgs - 05/30/10 (EAFerguson@AOL.COM)
2. 05:42 AM - Re: Nose Wheel (EAFerguson@AOL.COM)
3. 06:03 AM - Re: Re: Lightning-List Digest: 1 Msgs - 05/30/10 (IFLYSMODEL@aol.com)
4. 01:39 PM - Re: Nose Wheel (FamilyGage@aol.com)
5. 02:00 PM - Re: Nose Wheel (Bill Strahan)
6. 03:09 PM - Re: Nose Wheel (Bernard Melendez, Jr.)
7. 08:42 PM - Nose wheel shimmy (N1BZRich@AOL.COM)
8. 08:49 PM - Re: Nose wheel shimmy (N1BZRich@aol.com)
9. 10:05 PM - Re: Nose wheel shimmy (Lowell ridge)
Message 1
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| Subject: | Re: Lightning-List Digest: 1 Msgs - 05/30/10 |
In a message dated 5/31/2010 2:57:45 A.M. Eastern Daylight Time,
lightning-list@matronics.com writes:
Time: 01:11:51 AM PST US
Subject: Lightning-List: LSA type Round the World Progress
From: "James, Clive R" <clive.james@uk.bp.com>
http://www.azimut270.ch/en/position.html
California to Hawaii?? A 2000+ NM leg unless they had two or three carriers
with 100LL waiting.
Message 2
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In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight Time,
FamilyGage@AOL.COM writes:
I know that this has been discussed many times on our site. Would like to
present the nose wheel shimmy, just in case someone has had additional
experience.
I fly a 2005 Esquil, that is Lightning cowl forward and all three gear
legs.
There is no nose wheel shimmy at take off, but often becomes rather severe
on landing after I allow the weight off of the main gear onto the nose
wheel. By this time she is going rather slow, about 35-40 mph. The shaking
will stop at about 15-20 mph. And does not recur during taxi operations.
What is interesting is that even when the plane is not moving, should I take
the prop and put lateral forces i.e., right and left, there is a clanking
noise as if the tire is rubbing against the wheel pant.
I have checked out the nose wheel installation, changed tire pressures,
balanced all tires, changed tire brands; however, the symptom remains
unchanged.
I am out of ideas. Have learned to live with the shimmy, but this seems
to be a mechanical mystery. Any suggestions would be greatly appreciated.
Ray Gage
83TW Spruce Creek Florida
Ray,
This is a common problem with aircraft that have free swiveling nose wheels
and may have nothing to do with tire balance. Check the nylon block for
tightness. If the joint is too loose the wheel shimmies. We don't have an
adjustment, so the only solution would be to replace parts, i.e. the nylon
blocks.
On Grumman singles, which do have adjustable swivels, a force of 10 lbs to
turn the wheel is standard. Less than that will produce shimmy. Since our
Lightings and Esquals weight about half a Grumman, I'd look for less than
10 lbs.
Good luck fixing it.
Earl Ferguson
Atlanta
Message 3
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| Subject: | Re: Lightning-List Digest: 1 Msgs - 05/30/10 |
Hey Earl: How much extra fuel would you need to make it? If I put an extra
50 gal of fuel in my Lighting, at 4 gphr that gives me 32 hrs of flight
time before flame out.
Lynn
In a message dated 5/31/2010 8:36:07 A.M. Eastern Daylight Time,
EAFerguson@aol.com writes:
In a message dated 5/31/2010 2:57:45 A.M. Eastern Daylight Time,
lightning-list@matronics.com writes:
Time: 01:11:51 AM PST US
Subject: Lightning-List: LSA type Round the World Progress
From: "James, Clive R" <clive.james@uk.bp.com>
http://www.azimut270.ch/en/position.html
California to Hawaii?? A 2000+ NM leg unless they had two or three
carriers with 100LL waiting.
(http://www.matronics.com/Navigator?Lightning-List)
(http://www.matronics.com/contribution)
Message 4
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Earl,
Thank you. Will check out the tension on the block, and see if it needs
replacement.
Ray Gage
In a message dated 5/31/2010 8:42:35 A.M. Eastern Daylight Time,
EAFerguson@AOL.COM writes:
In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight Time,
FamilyGage@AOL.COM writes:
I know that this has been discussed many times on our site. Would like to
present the nose wheel shimmy, just in case someone has had additional
experience.
I fly a 2005 Esquil, that is Lightning cowl forward and all three gear
legs.
There is no nose wheel shimmy at take off, but often becomes rather severe
on landing after I allow the weight off of the main gear onto the nose
wheel. By this time she is going rather slow, about 35-40 mph. The shaking
will stop at about 15-20 mph. And does not recur during taxi operations.
What is interesting is that even when the plane is not moving, should I take
the prop and put lateral forces i.e., right and left, there is a clanking
noise as if the tire is rubbing against the wheel pant.
I have checked out the nose wheel installation, changed tire pressures,
balanced all tires, changed tire brands; however, the symptom remains
unchanged.
I am out of ideas. Have learned to live with the shimmy, but this seems
to be a mechanical mystery. Any suggestions would be greatly appreciated.
Ray Gage
83TW Spruce Creek Florida
Ray,
This is a common problem with aircraft that have free swiveling nose
wheels and may have nothing to do with tire balance. Check the nylon block for
tightness. If the joint is too loose the wheel shimmies. We don't have an
adjustment, so the only solution would be to replace parts, i.e. the nylon
blocks.
On Grumman singles, which do have adjustable swivels, a force of 10 lbs to
turn the wheel is standard. Less than that will produce shimmy. Since our
Lightings and Esquals weight about half a Grumman, I'd look for less than
10 lbs.
Good luck fixing it.
Earl Ferguson
Atlanta
(http://www.matronics.com/Navigator?Lightning-List)
(http://www.matronics.com/contribution)
Message 5
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Now this has me wondering if my shimmy is from the mains or the nose. I have a
Grumman Traveller and I've experienced the nosewheel shimmy when I didn't have
the tension high enough, as described previously.
Any way to tell which it is, other than have someone observe the plane on landing
and try to see where it's coming from?
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=299484#299484
Message 6
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Ray,
New guy here, have yet to receive my kits, but hope to contribute to this g
roup. I remember seeing something on one of the newsletters about just that
problem. Seems that one solution is to drill out the nylon bearing pieces
to a larger diameter and insert brass oil lite type bushings sized for the
nose wheel fork that the nose gear pivots on. Can't remember which issue I
saw that on, but I did see it. My guess, if it's the nose wheel shimmying i
s that there may be some play in those nylon blocks. My two cents; worth.
Bernardo Melendez
--- On Mon, 5/31/10, FamilyGage@aol.com <FamilyGage@aol.com> wrote:
From: FamilyGage@aol.com <FamilyGage@aol.com>
Subject: Re: Lightning-List: Nose Wheel
=0A=0A =0A=0AEarl,=0AThank you.- Will check out the tension on the block,
and see if it =0Aneeds replacement.=0ARay Gage=0A-=0A=0AIn a message dat
ed 5/31/2010 8:42:35 A.M. Eastern Daylight Time, =0AEAFerguson@AOL.COM writ
es:=0A=0A =0A In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight
Time, =0A FamilyGage@AOL.COM writes:=0A =0A -=0A I know that this
has been discussed many times on our site.- Would =0A like to present
the nose wheel shimmy, just in case someone has had =0A additional expe
rience.=0A I fly a 2005 Esquil, that is Lightning cowl forward and all t
hree gear =0A legs.=0A There is no nose wheel shimmy at take off, but
often becomes rather =0A severe on landing after I allow the weight off
of the main gear onto the =0A nose wheel.-By this time she is going r
ather slow, about 35-40 =0A mph.- The shaking will stop at about 15-20
mph.- And does not =0A recur during taxi operations.- What is inter
esting is that even when =0A the plane is not moving, should I take the
prop and put lateral forces i.e., =0A right and left, there is a clankin
g noise as if the tire is rubbing against =0A the wheel pant.=0A I ha
ve checked out the nose wheel installation, changed tire pressures, =0A
balanced all tires, changed tire brands; however, the symptom remains =0A
unchanged.=0A I am out of ideas.- Have learned to live with the shim
my, but this =0A seems to be a mechanical mystery.- Any suggestions wo
uld be greatly =0A appreciated.=0A Ray Gage=0A 83TW- Spruce Cree
k Florida=0A =0A Ray,=0A -=0A This is a common problem with aircraft
that have free swiveling nose =0A wheels and may have nothing to do with t
ire balance. Check the nylon block for =0A tightness. If the joint is too
loose the wheel shimmies. We don't have an =0A adjustment, so the only sol
ution would be to replace parts, i.e. the nylon =0A blocks.=0A -=0A On
Grumman singles, which do have adjustable swivels, a force of 10 lbs =0A
to turn the wheel is standard. Less than that will produce shimmy. Since ou
r =0A Lightings and Esquals weight about half a Grumman, I'd look for-le
ss than =0A 10-lbs.=0A -=0A Good luck fixing it.=0A -=0A Earl Fe
rguson=0A Atlanta
t href="http://www.matronics.com/Navigator?Lightning-List">http://www.mat
ronics.com/Navigator?Lightning-List
ms.matronics.com/">http://forums.matronics.com
tp://www.matronics.com/contribution">http://www.matronics.com/contribution
=0A=0A
Message 7
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| Subject: | Nose wheel shimmy |
If you suspect a nose wheel shimmy, there might be an easy fix by just
tightening the bolts that hold the nylon blocks together around the nose gear
leg. Sometimes, that is all it takes. If that does not work, probably
then next step is to disassemble the unit so that you can sand a very small
amount off the nylon blocks where they fit together. By doing this they
will then be able clamp a little harder on the nose gear leg.
To check the nose wheel for proper movement, have someone raise the
nose wheel by pushing down on the tail. You should be able to move the nose
wheel assembly by hand, but it should resist - not be too easy to move from
side to side.
If you suspect a nose wheel shimmy (I can tell it by feeling it in
the rudder pedals), raise the nose as mentioned above and see how easy it is
to move by hand. Tighten it some, by the first method mentioned above, and
then recheck to see if it is now harder to move. Then test fly to see if
you have a fix. If not, then dissemble the nose wheel and sand some off
the nylon blocks where they fit together as mentioned above.
Hope this helps.
Buz
Message 8
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| Subject: | Re: Nose wheel shimmy |
Reference my previous email on nose wheel shimmy. Scroll on down below
the message for a photo of the nose wheel assembly.
Buz
In a message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time,
N1BZRich@AOL.COM writes:
If you suspect a nose wheel shimmy, there might be an easy fix by just
tightening the bolts that hold the nylon blocks together around the nose
gear leg. Sometimes, that is all it takes. If that does not work,
probably then next step is to disassemble the unit so that you can sand a very
small amount off the nylon blocks where they fit together. By doing this they
will then be able clamp a little harder on the nose gear leg.
To check the nose wheel for proper movement, have someone raise the
nose wheel by pushing down on the tail. You should be able to move the nose
wheel assembly by hand, but it should resist - not be too easy to move from
side to side.
If you suspect a nose wheel shimmy (I can tell it by feeling it in
the rudder pedals), raise the nose as mentioned above and see how easy it is
to move by hand. Tighten it some, by the first method mentioned above, and
then recheck to see if it is now harder to move. Then test fly to see if
you have a fix. If not, then dissemble the nose wheel and sand some off
the nylon blocks where they fit together as mentioned above.
Hope this helps.
Buz
Message 9
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| Subject: | Re: Nose wheel shimmy |
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