Today's Message Index:
----------------------
1. 05:45 AM - Re: Nose leg - NANCHANG - Shimmy issue (dabear@damned.org)
2. 05:56 AM - Re: Nose leg - NANCHANG - Shimmy issue (Mark Pennington)
3. 07:17 AM - Anyone have a stock CJ6 motor (Reagan)
4. 08:21 AM - Re: Nose leg - NANCHANG - Shimmy issue (A. Dennis Savarese)
5. 08:36 AM - Re: Nose leg - NANCHANG - Shimmy issue (Mark Pennington)
6. 09:29 AM - Re: Re: Anybody have a copy of a YAK-55 Flying Manual? (heaysr)
7. 09:48 AM - Re: Re: Anybody have a copy of a YAK-55 Flying Manual? (Charles Benham)
8. 11:17 AM - Re: Nose leg - NANCHANG - Shimmy issue (Walter Lannon)
9. 07:07 PM - HEATER VENTILATOR CONTROL CABLE/ROD (Snazpappy)
Message 1
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| Subject: | Re: Nose leg - NANCHANG - Shimmy issue |
Check both tire pressure and strut pressure. If either are at max,
reduce a little.
Bear
On 5/2/2019 2:25 AM, woodja51 wrote:
>
> Hi all ... have just installed a completely new nose leg ( from China ) on my
Chang
> . I have been having issues with nose wheel shimmy and figured changing the entire
leg / shimmy damper might solve the problem. Tyre is new ( didnt help original
shimmy ) bearings appear to be ok - no slack etc. all greased up etc but
when taxi testing it seemed to pull to the right .
> Adjustment of the shimmy damper to pull it left seemed to help but I cant find
any sort of centring cam adjustment etc for tracking ?
> Is there any ?
>
> The issue is that on a hi speed taxi when lifting the nose then putting it down
again after rejecting the takeoff at around 60>knots , it shudders ( shimmy?)
quite badly - as if its still offset slightly , maybe almost skipping ? Any
gurus out there able to enlighten me ? Matt Combat Flights Melbourne +61420347885
mwuillemin@mac.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=489048#489048
>
>
Message 2
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| Subject: | Re: Nose leg - NANCHANG - Shimmy issue |
Also jack up the front of the plane so the tire is off of the ground. Use
a tow bar and rotate the nose gear left and right not to exceed 50 deg in
either direction.
You can disconnect the shimmy damper and rotate the nose gear to see if the
centering cam is operating properly.
Look for smooth travel back to center. With the damper. Much quicker with
no damper.
The travel should be the same in either direction.
Mark
N621CJ
On Thu, May 2, 2019 at 8:51 AM dabear@damned.org <dabear@damned.org> wrote:
>
> Check both tire pressure and strut pressure. If either are at max,
> reduce a little.
>
> Bear
>
> On 5/2/2019 2:25 AM, woodja51 wrote:
> >
> > Hi all ... have just installed a completely new nose leg ( from China )
> on my Chang
> > . I have been having issues with nose wheel shimmy and figured changing
> the entire leg / shimmy damper might solve the problem. Tyre is new (
> didn=C3=A2=82=AC=84=A2t help original shimmy ) bearings appear to b
e ok - no slack etc.
> all greased up etc but when taxi testing it seemed to pull to the right
.
> > Adjustment of the shimmy damper to pull it left seemed to help but I
> can=C3=A2=82=AC=84=A2t find any sort of centring cam adjustment etc
for tracking ?
> > Is there any ?
> >
> > The issue is that on a hi speed taxi when lifting the nose then putting
> it down again after rejecting the takeoff at around 60>knots , it shudder
s
> ( shimmy?) quite badly - as if it=C3=A2=82=AC=84=A2s still offset s
lightly , maybe almost
> skipping ? Any gurus out there able to enlighten me ? Matt Combat Flight
s
> Melbourne +61420347885 mwuillemin@mac.com
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=489048#489048
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
===========
===========
===========
===========
===========
>
>
Message 3
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| Subject: | Anyone have a stock CJ6 motor |
Contact me off line
Jlpartington@reagan.com
>>
Message 4
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| Subject: | Re: Nose leg - NANCHANG - Shimmy issue |
Have you balanced the front wheel assembly off the airplane?Have you check
ed the main gear strut pressures and tire pressures to make certain they ar
e the same on both left and right sides?Don't discount the possibility of t
he main gear contributing to the tracking problem.=C2- For example, if th
e airplane is tracking to the right, the left main may be toed in and the r
ight main may be towed out.Dennis
On Thursday, May 2, 2019, 8:47:57 AM EDT, dabear@damned.org <dabear@dam
ned.org> wrote:
Check both tire pressure and strut pressure. If either are at max,
reduce a little.
Bear
On 5/2/2019 2:25 AM, woodja51 wrote:
>
> Hi all ... have just installed a completely new nose leg ( from China ) o
n my Chang
> . I have been having issues with nose wheel shimmy and figured changing t
he entire leg / shimmy damper might solve the problem. Tyre is new ( didn
=C3=A2=82=AC=84=A2t help original shimmy ) bearings appear to be ok -
no slack etc. all greased up etc=C2- but when taxi testing it seemed to
pull to the right .
> Adjustment of the shimmy damper=C2- to pull it left seemed to help but
I can=C3=A2=82=AC=84=A2t find any sort of centring cam adjustment etc
for tracking ?
>=C2- Is there any ?
>
> The issue is that on a hi speed taxi when lifting the nose then putting i
t down again after rejecting the takeoff at around 60>knots , it shudders (
shimmy?) quite badly - as if it=C3=A2=82=AC=84=A2s still offset slig
htly , maybe almost skipping ?=C2- Any gurus out there able to enlighten
me ? Matt Combat Flights Melbourne +61420347885 mwuillemin@mac.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=489048#489048
>
>
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 5
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| Subject: | Re: Nose leg - NANCHANG - Shimmy issue |
Good point Dennis
My plane was duck walking at low taxi speeds and breaking on turns.
Both struts were below the 700 psi suggested. And they were in even.
Proper pressure solved all of the issues.
Hope this helps.
Mark
On Thu, May 2, 2019 at 11:27 AM A. Dennis Savarese <
dsavarese0812@bellsouth.net> wrote:
> Have you balanced the front wheel assembly off the airplane?
> Have you checked the main gear strut pressures and tire pressures to make
> certain they are the same on both left and right sides?
> Don't discount the possibility of the main gear contributing to the
> tracking problem. For example, if the airplane is tracking to the right,
> the left main may be toed in and the right main may be towed out.
> Dennis
>
> On Thursday, May 2, 2019, 8:47:57 AM EDT, dabear@damned.org <
> dabear@damned.org> wrote:
>
>
>
> Check both tire pressure and strut pressure. If either are at max,
> reduce a little.
>
> Bear
>
> On 5/2/2019 2:25 AM, woodja51 wrote:
> >
> > Hi all ... have just installed a completely new nose leg ( from China )
> on my Chang
> > . I have been having issues with nose wheel shimmy and figured changing
> the entire leg / shimmy damper might solve the problem. Tyre is new (
> didn=C3=A2=82=AC=84=A2t help original shimmy ) bearings appear to b
e ok - no slack etc.
> all greased up etc but when taxi testing it seemed to pull to the right
.
> > Adjustment of the shimmy damper to pull it left seemed to help but I
> can=C3=A2=82=AC=84=A2t find any sort of centring cam adjustment etc
for tracking ?
> > Is there any ?
> >
> > The issue is that on a hi speed taxi when lifting the nose then putting
> it down again after rejecting the takeoff at around 60>knots , it shudder
s
> ( shimmy?) quite badly - as if it=C3=A2=82=AC=84=A2s still offset s
lightly , maybe almost
> skipping ? Any gurus out there able to enlighten me ? Matt Combat Flight
s
> Melbourne +61420347885 mwuillemin@mac.com
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=489048#489048
> >
> >
> >
> >
> >
> >
> >
> >
> http://www.matronics.com/Navigator?Yak-List
> http://forums.matronics.com
> http://wiki.matronics.com
> http://ww=====
>
>
Message 6
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| Subject: | Re: Anybody have a copy of a YAK-55 Flying Manual? |
Hi Richard,
I would be delighted to have the link to the Yak 55M manuals
Best regards
Royden
----- Original Message -----
From: "Richard Goode" <richard.goode@russianaeros.com>
Sent: Wednesday, May 1, 2019 6:16:32 AM
Subject: RE: Yak-List: Re: Anybody have a copy of a YAK-55 Flying Manual?
As I have posted before, we have digitised most Yak and Sukhoi and engine
manuals and offer these as a free service to owners and operators. In
particular we have separate flight manuals for 55 and 55M.
Please send us an email telling us which aircraft you're interested in and
we will send you the link to download the appropriate manuals.
In passing we are about to digitise the Sukhoi 29 maintenance manuals (over
a thousand pages!), and again these will be ready for people to download in
a few weeks.
Richard
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of iainday
Sent: 01 May 2019 01:22
Subject: Yak-List: Re: Anybody have a copy of a YAK-55 Flying Manual?
Steve Geard wrote:
> I don't suppose you still have a copy of that flight manual for the 55m ?
Check your email.
Iain.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489030#489030
Message 7
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| Subject: | Re: Anybody have a copy of a YAK-55 Flying Manual? |
Richard
I also would like a link to Yak 55M manuel.
Thanks,
Charles
Sent from my iPhone
> On May 2, 2019, at 11:29, heaysr <heaysr@telus.net> wrote:
>
>
> Hi Richard,
>
> I would be delighted to have the link to the Yak 55M manuals
>
>
> Best regards
>
> Royden
>
> ----- Original Message -----
> From: "Richard Goode" <richard.goode@russianaeros.com>
> To: yak-list@matronics.com
> Sent: Wednesday, May 1, 2019 6:16:32 AM
> Subject: RE: Yak-List: Re: Anybody have a copy of a YAK-55 Flying Manual?
>
>
> As I have posted before, we have digitised most Yak and Sukhoi and engine
> manuals and offer these as a free service to owners and operators. In
> particular we have separate flight manuals for 55 and 55M.
>
> Please send us an email telling us which aircraft you're interested in and
> we will send you the link to download the appropriate manuals.
>
> In passing we are about to digitise the Sukhoi 29 maintenance manuals (over
> a thousand pages!), and again these will be ready for people to download in
> a few weeks.
>
> Richard
>
>
> RICHARD GOODE AEROBATICS
> Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
> Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
> e-mail: richard.goode@russianaeros.com
> www.russianaeros.com
> WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
> In partnership with Aerometal Kft, Hungary.
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of iainday
> Sent: 01 May 2019 01:22
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Anybody have a copy of a YAK-55 Flying Manual?
>
>
>
> Steve Geard wrote:
>> I don't suppose you still have a copy of that flight manual for the 55m ?
>
>
> Check your email.
> Iain.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=489030#489030
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Message 8
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| Subject: | Re: Nose leg - NANCHANG - Shimmy issue |
To answer your question, yes there is a centering device. It is the
internal centering cam referred to earlier by Mark. It is not adjustable
and I would hesitate in making any adjustment to the shimmy damper that may
transfer the very high centering load without fully assessing the possible
structural effects.
I have found that both the Chinese nose wheel tire and tube are grossly out
of balance. The wheel on the other hand is reasonably balanced and small
enough to be of little concern unless affected by previous balance attempts.
The tire is marked with a reference point which (in Western use) would be
positioned at the tube stem.
Years ago I built a simple balancing stand for this purpose and purchased a
bunch of truck tire balance patches (presume they still exist but don't
know) and balance the combined tire/tube combination on original (or spare)
wheel using the reference mark as above. Correction patch glued into tire
and assembly mounted per above reference. Final result one hell of a lot of
work but NO shimmy.
Perhaps you could find a tire shop able and willing to do the same.
-----Original Message-----
From: woodja51
Sent: Wednesday, May 01, 2019 11:25 PM
Subject: Yak-List: Nose leg - NANCHANG - Shimmy issue
Hi all ... have just installed a completely new nose leg ( from China ) on
my Chang
. I have been having issues with nose wheel shimmy and figured changing the
entire leg / shimmy damper might solve the problem. Tyre is new ( didnt
help original shimmy ) bearings appear to be ok - no slack etc. all greased
up etc but when taxi testing it seemed to pull to the right .
Adjustment of the shimmy damper to pull it left seemed to help but I
cant find any sort of centring cam adjustment etc for tracking ?
Is there any ?
The issue is that on a hi speed taxi when lifting the nose then putting it
down again after rejecting the takeoff at around 60>knots , it shudders (
shimmy?) quite badly - as if its still offset slightly , maybe almost
skipping ? Any gurus out there able to enlighten me ? Matt Combat Flights
Melbourne +61420347885 mwuillemin@mac.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489048#489048
---
This email has been checked for viruses by Avast antivirus software.
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Message 9
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| Subject: | HEATER VENTILATOR CONTROL CABLE/ROD |
I am not getting full control of my heater/ventilator! I only get about 1 inch
movement even when I disconnect both ends of the cable. New one is about $300+.
Any ideas on fixing or replacing? I have sprayed a lot of LPS through the
housing to where it is freely flowing out the other end. Not sure of the makeup
of the cotrol cable but there seems to be a lot of control rod on both ends,
and this seems to be part of the problem, the engine side has a few light kinks,
probably from the engine change. Any ideas?
Thanks
Snaz
Oh yeah it is on a YAK 52TW
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489076#489076
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