Fairchild Club Forum

>
> Hi Group,
> I was fit-checking the rudder to the vertical
> stabilizer on my PT-26
> before closing up the stab after rebuilding. One of
> the two holes of
> the center rudder hinge (p/n 6623) would not go in
> far enough to
> engage the hole of the stab bracket (p/n 66313).
> Examination showed
> the hinge was hitting the bracket bolt. There are
> also witness marks
> on the hinge which showed this interference was
> present when the
> rudder was previously installed, but maybe not to
> this extent.
> (Note - this rudder had never been installed on this
> fin.)
>
> I measured the leg of the hinge which would not
> engage and there was
> about 0.050" more material on that side of the hinge
> than on the side
> which would engage, which is why one side would
> engage and the other
> wouldn't.
>
> A similar condition exists on the bottom hinge (same
> p/n) - bracket
> (p/n 66316) combination, to the extent that the
> bracket hole was
> slightly egged-out due to the hinge bolt being
> driven home during its
> previous life! There were even thread marks in the
> bracket hole!
>
> Has anyone seen this condition before? It must not
> be that uncommon
> as all my hinges seem to suffer from the same
> disease. Any guidance
> would be appreciated.
> Thanks,
> Pete Crawford
>
>
>
>

> Pete,
> Have you tried to fit your rudder to another fin?
> Sounds like something happened to the alignment in the
> rebuilding process or the rudder hinge post may be in
> question. Out of round bolt holes are not a good
> thing! I've not seen the condition you are
> describing, something is really wrong here. Can you
> engage the bolts doing one hinge at a time? Refitting
> parts from one aircraft can be tricky when fitting to
> another aircraft, given the age of the parts. Sorry,
> I can't offer more.
>
> Mike
>
>
> --- Pete Crawford wrote:
>
> >
> > Hi Group,
> > I was fit-checking the rudder to the vertical
> > stabilizer on my PT-26
> > before closing up the stab after rebuilding. One of
> > the two holes of
> > the center rudder hinge (p/n 6623) would not go in
> > far enough to
> > engage the hole of the stab bracket (p/n 66313).
> > Examination showed
> > the hinge was hitting the bracket bolt. There are
> > also witness marks
> > on the hinge which showed this interference was
> > present when the
> > rudder was previously installed, but maybe not to
> > this extent.
> > (Note - this rudder had never been installed on this
> > fin.)
> >
> > I measured the leg of the hinge which would not
> > engage and there was
> > about 0.050" more material on that side of the hinge
> > than on the side
> > which would engage, which is why one side would
> > engage and the other
> > wouldn't.
> >
> > A similar condition exists on the bottom hinge (same
> > p/n) - bracket
> > (p/n 66316) combination, to the extent that the
> > bracket hole was
> > slightly egged-out due to the hinge bolt being
> > driven home during its
> > previous life! There were even thread marks in the
> > bracket hole!
> >
> > Has anyone seen this condition before? It must not
> > be that uncommon
> > as all my hinges seem to suffer from the same
> > disease. Any guidance
> > would be appreciated.
> > Thanks,
> > Pete Crawford
> >
> >
> >
> >
>
>
>
>
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> Pete,
> Have you tried to fit your rudder to another fin?
> Sounds like something happened to the alignment in the
> rebuilding process or the rudder hinge post may be in
> question. Out of round bolt holes are not a good
> thing! I've not seen the condition you are
> describing, something is really wrong here. Can you
> engage the bolts doing one hinge at a time? Refitting
> parts from one aircraft can be tricky when fitting to
> another aircraft, given the age of the parts. Sorry,
> I can't offer more.
>
> Mike
>
>
> --- Pete Crawford wrote:
>
> >
> > Hi Group,
> > I was fit-checking the rudder to the vertical
> > stabilizer on my PT-26
> > before closing up the stab after rebuilding. One of
> > the two holes of
> > the center rudder hinge (p/n 6623) would not go in
> > far enough to
> > engage the hole of the stab bracket (p/n 66313).
> > Examination showed
> > the hinge was hitting the bracket bolt. There are
> > also witness marks
> > on the hinge which showed this interference was
> > present when the
> > rudder was previously installed, but maybe not to
> > this extent.
> > (Note - this rudder had never been installed on this
> > fin.)
> >
> > I measured the leg of the hinge which would not
> > engage and there was
> > about 0.050" more material on that side of the hinge
> > than on the side
> > which would engage, which is why one side would
> > engage and the other
> > wouldn't.
> >
> > A similar condition exists on the bottom hinge (same
> > p/n) - bracket
> > (p/n 66316) combination, to the extent that the
> > bracket hole was
> > slightly egged-out due to the hinge bolt being
> > driven home during its
> > previous life! There were even thread marks in the
> > bracket hole!
> >
> > Has anyone seen this condition before? It must not
> > be that uncommon
> > as all my hinges seem to suffer from the same
> > disease. Any guidance
> > would be appreciated.
> > Thanks,
> > Pete Crawford
> >
> >
> >
> >
>
>
>
>
> __________________________________
> Do you Yahoo!?
> All your favorites on one personal page ? Try My Yahoo!
> http://my.yahoo.com