-
Install nose gear wheel.
-
Install wing spar bolt capture nuts on both sides of main
spar.
-
Clean out obstructions in wing spar cavity and sand/grid off any
squeeze out
-
Check and sand spar glass buildups and ensure same angles and
thickness.
-
Clean out area around fuselage to put out of garage.
-
Load front floorboard with sand bags.
-
Setup Cart to hold wings during installation.
-
Move right side wing out and position for install.
-
Move fuselage outside and jack up to install wings.
-
Adjust fuselage to height and angle for right wing.
-
Slide wing onto main spar and bolt in place.
-
Move left wing outside and position for install.
-
Readjust fuselage to height and angle for left wing.
-
Slide left wing onto main spar and bolt in place. (Had problems
on this one.)
-
Level the fuselage for and aft, left and right. (Check and
double check.)
-
Mark equal positions on each wing for measurement of angle of
incidence.
-
Setup jig with level guide for determining angle of
incidence.
-
Set angle of incidence on left wing and clamp in place.
-
Set angle of incidence on right wing and clamp in
place.
-
Check and recheck everything to ensure correct and equal angle
of incidence.
-
Fabricate spacers for rear spar/rear wing spar gap.
-
Drill guide holes in rear spar and bolt in place with
spacers.
-
Recheck all angles again.
-
Drill holes for rear spar guides and bolts.
-
Recheck all angles yet again.
-
Bond the rear spar spacers and bolt guides on left
side.
-
Recheck for correct angle of incidence after first side. (Yes
again.)
-
Bond the rear spar spacers and bolt guides on right
side.
-
You might want to check the angles again but by now, you are
committed.
-
Fabricate Nylon guide for flap arms.
-
Install left flap and actuator arm.
-
Trim Left flap guide and install spacer for fit.
-
Install left flap actuator arm and set angles.
-
Install Right flap and actuator arm.
-
Trim Right flap guide and install spacer for fit.
-
Install Right flap actuator arm and set to match left
flap.
-
Check that both right and left flaps at same angle.
-
Raise flaps to full up position.
-
Trim the edges of the wing farings.
-
Use duct tape to provide small gap between farings and wing
joggle.
-
Position lower flap / wing faring and tape into
position.
-
Position upper wing faring and trial fit.
-
Sand and trim farings as needed to clean fit.
-
Position and install farings with machine screws to test fit for
bonding.
-
Sand and trim under belly wing farings.
-
Cut under belly wing faring in half.
-
Trim and position under belly wing farings to wing and
fuselage.
-
Locate all aileron pushrods and bond ends for one end.
-
Cut all aileron pushrods to approximate length.
-
Cut opening in fuselage for Aileron Pushrods.
-
Mount fuselage aileron bell cranks.
-
Sand all farings for bonding to fuselage.
-
Sand all bond areas on fuselage.
-
Bond wing farings to fuselage.
-
Remove wing gap covers and finish trim.
-
Mark for mounting screws and temp remount.
-
Mark location of lock nuts in wing.
-
Add trailing lip for connection to rear under wing
farings.
-
Locate and mark for additional lock nuts and mounts.
-
Install all lock nuts for removable panel.
-
Fabricate landing gear bay panel.
-
Locate mounting points for landing gear cover and install lock
nuts.
-
Use foam blocks to fabricate landing gear farings to
fuselage.
-
Fill all voids and gaps between wing and farings.
-
Fill all voids and gaps around farings.
-
Install pushrod connections on Ailerons.
-
Size and fit aileron push rods. (Outer).
-
Size and fit Aileron Push rods (Wing).
-
Size and fit aileron push rods. (Inside.)
-
Adjust the aileron travel for both left and right
wings.
-
Locate and install screws / connections for seat belts.
-
Remove all screws from cured wing farings and fill
holes.
-
Sand and trim wing farings and fill for finish.
-
Add shims under hinges where indicated.
-
Finish counter sinking all aileron / flap screw heads.
-
Add locking nut tab to all hinges.
-
Complete bending and test all hinge pins.
-
Install aileron and flap hinges with adhesive and locking
nuts.
-
Extend ground strap and connect to aileron hinges, counter weights,
flaps
-
Cutout and glass wing tips to provide increased aileron
travel.
-
Align wings and ailerons and set lengths of all push
rods.
-
Reposition flaps in up position and make any adjustments needed
to farings.
-
Set and position flaps to required settings (Up, 12,24,36
degrees)
-
Reset wing tips and double check all fittings.
-
Remove wing tips.
-
Remove Ailerons.
-
Remove Flaps.
-
Remove Garage side (left) wing. (Must reposition everything
to slide off.)
-
Remove Street side (right) wing. (Must reposition everything
again to slide off.)
-
Lower Fuselage back to ground level.
-
Move everything back into garage.
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Some of the specific problems I encountered during the pre-assembly process
were:
-
The first real problem was the strip that had been bonded to provide
an enlarged bonding area for the panel inside the spar opening in the wing.
This strip had been pushed up some during the closeout and was just
enough to keep the main spar from moving down enough to get the spar bolts
in place. Sanding and grind this down took several hours and scratched
up my arm considerably.
-
Setting the angle of incidence was not a real problem but it took
a tremendous amount of time due to having to constantly move back and forth
to check the angles. It was a very time consuming process because of
the logistics of working alone.
-
The flap actuator guide channel, which I had made in the extended
length needed trimming. Once fit without interfeerence, it proved to
be too far from the guide and I had to remove it and add a 1/4" spacer.
This was repeated on the right wing as well but the spacer was a bit
thinner. I had some problems drilling the holes for mounting the flap
guides but I think I did the right thing by not mounting them before. By
waiting, I was able to position the flaps, the guides, and then lock everything
into the proper place. It took more time but the flaps are exactly
the same.
-
Fitting the fairings, expecially the under side fairings was not
all that difficult but was time consuming because of trying to hold things
in place while setting screws or tape. Once again, it took a lot of
time to position, adjust, reposition, trim, and finally set in place. The
results are great but it just took a huge amount of time.
-
Fitting the aileron controls were probably the most frustrating
of all the operations. I measured and cut, measured and cut and repeated
the operations over and over. The first wing pushrod I measured and
cut but cut it about 1/2 inch shorter than ideal. It works but I may
make a new one simply to make myself feel better. After that, I cut
every thing long, fit, cut, fit, cut, and finally fit again. I wanted
to make sure that I didn't cut another one short. The biggest problem
was trying to get the proper elevator travel that I needed. I adjusted
and readjusted until I was sick of the whole thing but could not get the
proper movements. I had added spacers between station 30 and the bellcrank
bracket. I also added a 1/4" spacer to the bellcrank to position the
control rod within the wings leading edge. Still, I couldn't get the
proper movement. What I had failed to remember was that the change from dual
sticks to a center stick had changed the amount of movement in the controls.
I decided to move the mounting point for the fuselage bellcrank to
a hole that I had added when I installed the spacer and see if things worked
better. Finally, the controls were giving the amount of movement needed.
The stick will be a bit more sensitive but I think I will like it much
better.
-
Bonding of the fairings gave me two very different problems. I
had fit the fairings dry and with the flaps in their retracted position.
I then lowered the flaps and performed the bonding operation with flaps
out of the way. BIG MISTAKE. Two problems surfaced during the
bonding operation. The adhesive was very thick and some of the adhesive
pushed the gaps open between the original screws. I had to add additional
screws which in turned pulled the fairing down resulting in some distortion.
The fairing that fit over the flaps shifted slightly and the result
was that the flaps now caused the fairing to bulge at the wing. The
cure is still in progress and has required several adjustments.
-
HEAT! HUMIDITY! The September heat wave has made everything
more difficult and the work has moved much slower than would otherwise be
the case. I have to take frequent breaks to avoid heat exhaustion and
by the end of the day, I feel beaten and discouraged by the progress.
It is very possible for a single individual to perform all the
tasks necessary to accomplish the preassembly and the ultimate final assembly.
It is a daunting task but with planning and time, it will prove
doable.
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