REFLECTOR:Wing Jacks

John Dibble reflector@tvbf.org
Fri Jun 4 14:37:05 CDT 2004


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I use jacks only to raise the wings.  Once raised, I put drums under the
wing/spar attach point plus planks/2x4s/old rug, etc for the necessary
height and to spread the load over the wing/spar area.

John

Gilles Gratton wrote:

> This is not a confession but a word of caution as we can all learn
> from someone else,s mistake. This week in my neighbour's hangar, a
> friend of mine was just finishing his final retract test on his newly
> finished P51 replica when his beloved project slipped off the jack on
> one side which busted the whole wing in front of the spar, broke two
> blades off his new 3-blade prop and busted the oil pan on his newly
> overhauled engine (Ranger?). The emotional repercussion is as
> important as the financial and labour setback. He may never finish his
> project now, he is so upset. . Just two days before, I had my FG
> Velocity on jacks (under the spars) to change my brake pads. I do this
> every year to pack the bearings during the annual.  Maybe, I have been
> lucky so far.  My jacks only have a small pad on top (6" X 9").  My
> friend had a well padded  16" X 16" surface between the jack and the
> wing.  It went right through the leading edge of the wing once it
> slipped off the spar area. So if you have your plane on jacks make
> sure that the wheels (or wheel) remaining on the floor are well
> chucked and that the airplane is tied down to prevent lateral or
> fore-aft movement.Cheers,    Gilles
>
>      -----Original Message-----
>      From: reflector-admin@tvbf.org
>      [mailto:reflector-admin@tvbf.org]On Behalf Of Ronnie Brown
>      Sent: 29 mai 2004 08:01
>      To: reflector@tvbf.org
>      Subject: Re: REFLECTOR:Confession Week!!!
>
>

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I use jacks only to raise the wings.&nbsp; Once raised, I put drums under
the wing/spar attach point plus planks/2x4s/old rug, etc for the necessary
height and to spread the load over the wing/spar area.
<p>John
<p>Gilles Gratton wrote:
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<span class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>This
is not a confession but a word of caution as we can all learn from someone
else,s mistake.&nbsp;</font></font></font></span><span class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>This
week in my neighbour's hangar, a friend of mine was just finishing his
final retract test on his newly finished P51 replica when his beloved project
slipped off the jack on one side which busted the whole wing in front of
the spar, broke two blades off his new 3-blade prop and busted the oil
pan on his newly overhauled engine (Ranger?).&nbsp;</font></font></font></span><span 
class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>The
emotional repercussion is as important as the financial and labour setback.&nbsp;</span>H<span class=840555913-29052004>e
may never finish his project now, he is so upset.&nbsp;</font></font></font></span><span 
class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>.&nbsp;</span><span class=840555913-29052004>Just
two days before, I had my FG Velocity on jacks (under the spars) to change
my brake pads. I do this every year to pack the bearings during the annual.&nbsp;
Maybe, I have been lucky so far.&nbsp; My jacks only have a small pad on
top (6" X 9").&nbsp; My friend had a well padded&nbsp; 16" X 16" surface
between the jack and the wing.&nbsp; It went right through the leading
edge of the wing once it slipped off the spar area.&nbsp;</font></font></font></span><span class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>So
if you have your plane on jacks make sure that the wheels (or wheel) remaining
on the floor are well chucked and that the airplane is tied down to prevent
lateral or fore-aft movement.</font></font></font></span><span 
class=840555913-29052004><font face="Arial"><font color="#0000FF"><font size=-1>Cheers,&nbsp;&nbsp;&nbsp;
Gilles&nbsp;</font></font></font></span><span 
class=840555913-29052004></span><span 
class=840555913-29052004></span><span 
class=840555913-29052004></span><span 
class=840555913-29052004></span><span 
class=840555913-29052004></span><span 
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class=840555913-29052004></span><span 
class=840555913-29052004></span>
<blockquote dir=ltr style="MARGIN-RIGHT: 0px">
<div class="OutlookMessageHeader" dir="ltr"><font face="Tahoma"><font size=-1>-----Original
Message-----</font></font>
<br><font face="Tahoma"><font size=-1><b>From:</b> reflector-admin@tvbf.org
[<A HREF="mailto:reflector-admin@tvbf.org">mailto:reflector-admin@tvbf.org</A>]<b>On Behalf Of </b>Ronnie Brown</font></font>
<br><font face="Tahoma"><font size=-1><b>Sent:</b> 29 mai 2004 08:01</font></font>
<br><font face="Tahoma"><font size=-1><b>To:</b> reflector@tvbf.org</font></font>
<br><font face="Tahoma"><font size=-1><b>Subject:</b> Re: REFLECTOR:Confession
Week!!!</font></font>
<br>&nbsp;</div>
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