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20 Aug 2002 |
Finally
started on the rudder. So far, so good. No major disasters. Here are the
right rudder skin stiffeners being match drilled to the skin. All the
holes are pre-punched so all one needs to do is match drill. Oh, the
stiffeners also come pre-punched in 3' lengths. There are punches used
for guiding the trim cuts. It appears that left skin stiffeners are
rotated about the fore/aft axis 180 degrees. |
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21 Aug 2002 |
The rudder
bottom is fitted here in this picture. There's a bunch of parts but
nothing difficult here. |

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21 Aug 2002 |
This is really
the more difficult part of the rudder. The trailing edge wedge has to be
counter-sunk and the part is somewhat thin to begin with. I ended up
match drilling to an old door (hummm, saved the old doors from recent
kitchen renovation...) and cleco'd the wedge to the door. Even if the
countersink is kept to the minimum depth, the holes will enlarge
slightly (you have to c/sink both sides), so the match holes in the door
serve as a guide for the countersink to prevent chattering. |
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21 Aug 2002 |
Skin in the
process of match drilling with the rudder frames as well as the fitting
of the lower fiberglass fairing backing. |
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4 Sep 2002 |
After a
week or so off, it's back to the project. Lots of rudder parts hung out
to dry and ready for priming. |
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8 Sep 2002 |
Skins back
riveted. |

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9 Sep 2002 |
Finally the
rudder goes together. The brace will require four blind rivets which are
now on order. Just can't get to those with a bucking bar. The lower
shows the right skin cleco'd and the balance skin riveted on. |
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10 Sep 2002 |
Time to
accomplish the trailing edge bonding. Plans call for using Proseal but I
didn't have any on hand. What I did have on hand was some Systems Three
T-88 (formerly Chemtech T-88) epoxy structural adhesive. As Elwood said
in The Blues Brothers, "This is glue. Strong stuff!" I
mixed up a small batch then cleco'd the TE down to the angle. I figured
the clecos may get involved with the epoxy adhesive so I stuck each one
in Boelube prior to inserting into the trailing edge. All came out with
minimal adhesive stuck to them. Note hole cut in table to accommodate
the rudder horns. |


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11 Sep 2002 |
Top Picture:
The white residue is what's left of the Boelube. A good wipe-down with
some PPG epoxy primer reducer cleaned up most of the mess. Then run a
deburring tool one turn in each dimple, and everything is ready for
riveting.
Second Picture: This shows the TE all ready for riveting. Now to figure
out this double-flush riveting. |
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11 Sep 2002 |
Basically the
process was fairly straight forward although much patience is advised.
Go slowwwwww.
Per the manual, hit about every tenth rivet and only set about half way,
shooting straight down on the rivet. Alternate rivets until all are done
and continually check for TE straightness. Next is where I deviated from
plans. I ground down a squeezer set so when a squeezer is compressed,
the dies lay flush on the TE. I then used a pneumatic squeezer to slowly
squeeze all rivets, alternating rivets to keep the edge straight. If you
use a pneumatic squeezer, apply air very slowly to avoid distorting the
edge.
Picture at left shows the finished state. Manufactured head is very
flush with surface, but the shop heads do protrude and do not completely
fill the dimples. I ended up with some very slight pillowing between a
couple rivets, but otherwise a very straight rudder. |

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12 Sep 2002 |
Finally,
pretty much done with the rudder. Ran some blind rivets for several of
the aft-most skin rivets on the ribs, bent the leading edge and blind
riveted that as well, and installed the hinge bearings. All seems to
have come out OK and the rudder moves with no friction. Only thing left
is the fiberglass work. Total time on the rudder is now 30.5 hours with
91.5 total time on the kit. |
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15 Sep 2002 |
I was aligning
the rudder bearings with the vertical stab when I figured that it was
advantageous to fit the fairings at this time. The parts were
together anyway so why wait. |
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16 Sep 2002 |
I used West
System to lay up a couple layers of glass on a 1/4 inch foam sheet. This
was used to make the plug for the VS tip fairing. The rudder is already
closed but will need some filler. |
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17 Sep 2002 |
Here' s what
the epoxy fiberglass plug looks like when installed. The lay-up at the
top of the tip is a filler to achieve a nice smooth line around the
entire VS/ rudder tip. |
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22 Sep 2002 |
While I was
waiting on the tip to cure, I started the lower rudder fairing. The plan
here is to use #6 screws and tinnerman counter-sunk washers and allow
the lower fairing to be removed for maintenance of the tail light and
wiring. I cut U-shaped channel in the fairing to accommodate the
rudder horn which will be filled with a piece of fiberglass later. The
RV-9 demonstrator has the gap left the way it is and is hardly noticed.
This seemed a lot easier than removing the forward nose of the fairing
and then re-attaching when the fairing was fitted over the horn. |
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29 Sep 2002 |
Well not
really RV related, Carolina and I took a long weekend to Maui. Nice to
throw in some quality time....Lots of sun and foofy bar drinks. Got to
keep things in perspective! |

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3 Oct 2002 |
Finally got
the rudder and VS tips in decent shape. They're not quite finished but
very close. I'll deal with these at a later date, probably when it's
close to painting the exterior. I only spent about 31.3 hours on the
rudder, but it took another 13 hours just for the tips and lower rudder
fairing. This fiberglass sure takes some time. On to the elevators... |
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