Looks like the pins have been replaced by bolts? Likely in a vain attempt to
remove
play (not the way to do it)?
Pete
C-gnpz
> On Oct 4, 2020, at 5:33 PM, Erik Dahlbck <erik@erikdahlbeck.com> wrote:
>
> Hello again,
>
> Me and our local mechanic are still working on getting SE-XRX airworthy.
>
> During the process, I've spent some time reading up on modifications and
> service
bulletins. After reading about the mod 73 and SB-15 issues I went to the hangar
and found that the port side stabilator sure could be moved a little bit
after the counterweight hit its stop. The starboard one is solid though.
>
> I put a short video of it on Youtube:
>
> https://youtu.be/_LzkvIJ9T5o
>
> The video shows the stabilator being held so that the couterweight is against
the stop and then moving slightly when more force is applied.
>
> When measured using a metal measuring tape from the floor up to the trailing
edge of the stabilator, the movement is somewhere around 6-8 mm, which is at
least
less than the 0.5 inch limit set forth by the PFA FSB006. Still a bit worrying
though.
>
> SB-15 (the application of loctite) is supposed to have been done according to
the builder and it also looks like there is loctite along the edges of the parts
that should have it. Please see the attached photo taken through an inspection
port, showing the stabilator drive train assembly. At least I suspect that
the green-ish stuff around the edge of the TP 12 drive plate cylinder, sticking
out of the TP 10 bushing, as well as what (from this angle) is visible on
the left side of the control horn tube, should be the loctite.
>
> Also, what puzzles us is that we cannot actually see anything moving when
> looking
through the inspection port when the stabilator is moved, as in the video.
We even taped a marker pen onto a stick to let us draw, well, not a straight
line, but at least some marks for visual reference on the parts (to the right
in the image, which was taken before the drawing). Still, when externally
looking
down between the fuselage and the stabilator, onto what should be the TP
12 drive plate cylinder (if I've understood the design correctly), it looks like
that "axis" is moving along with the stabilator. So we kind of fail to
understand
where this movement is happening. Weird...?
>
> Any thought on this would be greatly appreciated.
>
>
> / Erik
>
>
> <DSC_1743.jpg>
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