Quickie Q2 Lite Construction Manual - page 168
Q2 Plans - Chapter 10 - Page 10-06
INSTALLING THE ELEVATOR SLOT FOAM CORES
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This step is critical to having a nice looking canard and
elevator union, so follow the directions carefully.
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To start out with, the elevator slot foam cores that you hot-
wired way back when were purposely made longer than necessary. Your
first task is to size them for the correct length. To do this, you
must measure your fuselage width at the fuselage/elevator slot foam
core junction. Take measurements of the canard, skip ahead to the
section on "Mounting The Canard To The Fuselage", and determine that
dimension, on either side of BL00. Mark the proper points on the
canard. Wait to trim the inboard elevator slot foam cores until after
they have been installed on the canard.
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Next, determine where to trim the outboard elevator slot foam
cores. Since each elevator was made 72" long, measure 6 feet plus 1
inch (for elevator/fuselage clearance) from your first mark outboard
and place another mark. This is where the outboard elevator slot foam
core will be trimmed, but, as before, wait until after installation
to do it.
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The elevator slot foam cores are unique in that both the brake
line conduit and the pitot tube must run through the lower, forward
edge as shown on the sketch.
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The pitot tube runs out the right canard, exits at about BL40,
and is shaped as shown.
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In the right canard, the brake line conduit enters the inboard
end of the elevator slot foam core within 1/2" of the top edge, and
continues all the way outboard to the end of the outboard elevator
slot foam core on the right side of the aircraft. Let the Nylaflow
tubing extend about 4" beyond the end of the slot foam core. On the
left canard, do the same routing. You should use a router bit in the
Dremel to route out the foam. Any extra "room" in the foam is filled
with dry micro. Both the brake line conduit and pitot tube are
installed with 5-MIN dabs to hold them in place, and then surrounded
with dry micro, as shown. Keep both lines, but particularly the brake
line conduit, as straight as practical. The pitot tube tubing should
extend into the fuselage about 12".
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The elevator slot foam cores are installed to the canard shear
web with micro-slurry on the foam cores and epoxy on the shear web
(don't forget to remove the Peel Ply!), plus a few dabs of 5-MIN to
keep the two attached during cure.
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It is easier to check clearances top and bottom if the canard is
jigged vertically on the jig table. This will also keep the joint
from running. By this time, you should be so good at jigging, that we
won't even talk about how to do it.
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The important point to remember is that at the shear web attach
point along the span, the top and bottom of the elevator slot foam
cores should flow smoothly into the top and bottom surfaces of the
canard, respectively. If the elevator slot foam cores want to stick
up a little bit, this is OK since that can be sanded later. Any dip,
however, will have to be filled with micro. When you have done your
best to carefully fit the shear web joint top and bottom then mix up