Top Flite TOPA0405 - Manual (Page 35)

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14. Install the two elevator servos, rudder servo
and tail wheel steering servo in the fuse. Hook up
the radio and center the servo arms on the
elevator servos. Thread 4-40 metal clevises onto
two 4-40 x 36" threaded pushrods. Insert the
pushrods into the elevator outer pushrod tubes
and connect the clevises to the servo arms on the
elevator servos.
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15. Attach metal solder clevises to the torque rod
horns. Center the servo arms on the elevator servos
and move the torque rods to the neutral position.
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16. Mark the elevator pushrods at the clevis.
Remove and cut the elevator pushrods to the
appropriate length.
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17. Use silver solder to solder the solder
clevises onto the ends of the elevator pushrods.
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18. Remove the 4-40 threaded metal clevises
and slide a silicone retainer over the solder
clevises. Insert the elevator pushrods into the
elevator outer pushrod tubes from the aft end of the
fuse. Attach the metal clevises to the torque rods
and slide the silicone retainers over the clevises.
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19. Thread a 4-40 nut onto each of the elevator
pushrods. Slide a second silicone retainer onto both
elevator pushrods and thread the 4-40 metal
clevises back on. Attach the clevises to the elevator
servo arms to confirm that the elevator pushrods
are the proper length and operate without binding.
Once the fin is glued on the stab, the elevator
pushrods will be very difficult to remove.
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20. Work the fin into position on the stab. Trim
any fin sheeting that prevents the fin TE from
standing vertical when viewed from the side. Refer
to the fuse side view on the plan.
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21. Check the fin from the front and rear of the
model to make sure it is perpendicular to the stab.
Use 30-minute epoxy to glue the fin to the forward
top sheeting of the stab, F-11 and the aft fuse
sides. Before the epoxy cures, recheck the fin
for alignment.
BUILD THE ELEVATORS
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1. From four 3/32" x 3" x 24" balsa sheets
make four elevator skins. Use the elevator skin
template on the wing plan as a guide. Save the
excess sheeting to make the elevator end caps.
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2. Pin one of the elevator skins to your
building surface. Use the rib guides on the plan to
mark the rib locations on the bottom skin.
How To Achieve A Good Solder Joint
A. Roughen the area to be soldered with fine
sandpaper. Thoroughly clean the area with
rubbing alcohol.
B. Assemble the items to be soldered.
C. Apply a small drop of solder flux to the joint.
D. Heat the area to be soldered. Apply solder to
the heated area. The metal must get hot enough
to melt the solder and the solder must flow into
the joint. Do not melt the solder by touching it to
the soldering iron.
E. Do not move the parts until the solder has
cooled.
F. Clean off the excess flux with alcohol.
G. Test the joint by pulling on it.
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