| Repeat this
process with the horizontal stabilizer, but do NOT fit it
yet.
Before we can fit the tail control rod, we
still have it holding our rubber drive belt safely (don't we
?), so we need to get the belt over the tail driven gear in
the correct orientation, and then we can sort the control
rod out. Before we do that however, you need to slide
the tail control rod holder down over the boom, as we will not be
able to do that once we insert the boom into the back of the
frame. |
| Now we come to
what is probably the trickiest thing that you have to do to
be honest, and that is to ensure that the tail drive belt
goes over the tail driven gear the RIGHT WAY AROUND, and
without twisting the belt more than once through 90 degrees.
So first you slide the boom gently into
the boom holders at the rear of the frame, twisting it
slightly to ensure the slot in the boom goes on the left and
it fits over the locating lug, and while keeping that
belt from twisting until the boom is far enough in to
allow you to put the drive belt over the tail driven
gear. If you cannot make the boom go in far enough,
remove the screws holding the rear boom mount and then
push the boom in further until the belt will fit over the
tail driven gear.
Once the boom is in far enough, and you
can slip the belt over the driven gear, what you need to
achieve is that when the rotor head is spun clockwise, the
tail rotors spin the correct way around, and that is ANTI
CLOCKWISE when viewed from the RIGHT HAND SIDE of the
helicopter. In other words, the tail rotor blades
rotate so that they climb UP into the downwash of the MAIN
ROTORS.
So first of all, try to fit the belt over
the driven gear, and see which way the tail rotors turn. If
they are wrong, you need to take it off and turn the belt
through 90 degrees, but MAKE SURE YOU DO NOT TWIST IT
THE SAME WAY TWICE, or the tail drive belt will bind.
Refit it and once all is well, reposition
the rear boom mounting if you released it, then pull the
boom out just enough to tension the drive belt. Then
fit and tighten the nuts on the two long bolts on the rear
boom clamps. Check the tension of the belt with a
small screwdriver or pencil. You should only be able to push
the drive belt sideways enough so that it cannot actually
touch the other side of the belt. When correct, add thread
lock and clamp the nuts fully, and fully tighten the self
tapping screws as well.
 
Now we can fit the boom
support rods between the frame and the horizontal
stabilizer. For this you need to find that remaining long
alloy spacer, as it goes between the frame when you mount
the support arms.
 |
Take the two carbon
rods, and using come CA glue, fit the white ends to
ONE end only at this time.
Then fit them to the frame as
shown on the left. |
| Then use some CA glue
to fit the white ends to the other end of the support
rods, ensuring that they line up vertically with the
sides of the white clamp for the horizontal
stabilizer. |
 |
The finished boom support and
horizontal stabilizer.
AND THIS IS WHAT YOU
SHOULD BE SEEING NOW...
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