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Subject: Re: [LML] Re: Strut Pressure
From: Don Karich <donkarich@gmail.com>
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
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My technique is to carefully increase the high pressure nitrogen bottle,
constantly shaking the wing to avoid a slight bind in the shaft that would
permit a sudden jolt overpressering and damaging the seal. I find it takes
about 250-400 psi to raise the shaft. I raise it about 4 inches on the
Legacy and slightly overfill it so I can final adjust it with tapping the
pin on the schrader valve to release pressure. The goal is to get both main
even at about 4 inchs. Shake out the wing tips to verify height.

On Wed, Aug 5, 2009 at 8:55 AM, Bob B. <rbelshe@comcast.net> wrote:

> Pete,
>
> This is the method I use:
> .  Airplane on the ground, empty
> .  Add nitrogen to strut until it is fully extended
> .  Remove the filler hose
> .  Using a pin punch and a small hammer, make very light taps on the
> Schrader valve stem until it drops to about 1/2" below fully extended.
> .  There is some hysteresis, so between taps pull down on the prop (or lift
> the tail) to see the actual position.
>
>
> Bob Belshe
> Moraga, CA
> Lancair 235/320
> http://home.comcast.net/~rbelshe/
>
>
> -----Original Message-----
> From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of
> Peter
> Field
> Sent: Wednesday, August 05, 2009 7:34 AM
> To: lml@lancaironline.net
> Subject: [LML] Strut Pressure
>
>
>  Does anyone know what the nitrogen pressure ought to be on the nose
> landing
> gear strut of a Lancair 360?
>
> Pete Field
> LNC2, N775DX
>
>
> --
> For archives and unsub
> http://mail.lancaironline.net:81/lists/lml/List.html
>
>
> --
> For archives and unsub
> http://mail.lancaironline.net:81/lists/lml/List.html
>

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My technique is to carefully increase the high pressure nitrogen bottle, co=
nstantly shaking the wing to avoid a slight bind in the shaft that would pe=
rmit a sudden jolt overpressering and damaging the seal. I find it takes ab=
out 250-400 psi to raise the shaft. I raise it about 4 inches on the Legacy=
 and slightly overfill it so I can final adjust it with tapping the pin on =
the schrader valve to release pressure. The goal is to get both main even a=
t about 4 inchs. Shake out the wing tips to verify height.=A0 <br>
<br>
<div class=3D"gmail_quote">On Wed, Aug 5, 2009 at 8:55 AM, Bob B. <span dir=
=3D"ltr">&lt;<a href=3D"mailto:rbelshe@comcast.net">rbelshe@comcast.net</a>=
&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex=
; PADDING-LEFT: 1ex" class=3D"gmail_quote">Pete,<br><br>This is the method =
I use:<br>. =A0Airplane on the ground, empty<br>. =A0Add nitrogen to strut =
until it is fully extended<br>
. =A0Remove the filler hose<br>. =A0Using a pin punch and a small hammer, m=
ake very light taps on the<br>Schrader valve stem until it drops to about 1=
/2&quot; below fully extended.<br>. =A0There is some hysteresis, so between=
 taps pull down on the prop (or lift<br>
the tail) to see the actual position.<br><br><br>Bob Belshe<br>Moraga, CA<b=
r>Lancair 235/320<br><a href=3D"http://home.comcast.net/~rbelshe/" target=
=3D"_blank">http://home.comcast.net/~rbelshe/</a><br>
<div>
<div></div>
<div class=3D"h5"><br><br>-----Original Message-----<br>From: Lancair Maili=
ng List [mailto:<a href=3D"mailto:lml@lancaironline.net">lml@lancaironline.=
net</a>] On Behalf Of Peter<br>Field<br>Sent: Wednesday, August 05, 2009 7:=
34 AM<br>
To: <a href=3D"mailto:lml@lancaironline.net">lml@lancaironline.net</a><br>S=
ubject: [LML] Strut Pressure<br><br><br>=A0Does anyone know what the nitrog=
en pressure ought to be on the nose landing<br>gear strut of a Lancair 360?=
<br>
<br>Pete Field<br>LNC2, N775DX<br><br><br>--<br>For archives and unsub <a h=
ref=3D"http://mail.lancaironline.net:81/lists/lml/List.html" target=3D"_bla=
nk">http://mail.lancaironline.net:81/lists/lml/List.html</a><br><br><br>--<=
br>
For archives and unsub <a href=3D"http://mail.lancaironline.net:81/lists/lm=
l/List.html" target=3D"_blank">http://mail.lancaironline.net:81/lists/lml/L=
ist.html</a><br></div></div></blockquote></div><br>

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