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you did with the ailerons. Mark the location for the screw
holes. On the marks, drill through the plywood plate with a
1/16" [1.6mm] drill bit. Drill only through the plate, not
through the elevator! Secure the control horn to the elevator
with two #2 x 3/8" [9.5mm] SMS.
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4. Position the elevator servo in the servo tray so that the
servo arm is just above the elevator pushrod wires. (Note:
Remember if you are doing the electric motor installation
with NiMH batteries you should be installing this into the
secondary servo tray you installed.)
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5. Remove the left elevator pushrod wire from the fuselage.
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6. Install a 4-40 solder clevis into the outer hole of the
servo arm. Center the right elevator and center the servo.
Make a mark on the wire indicating where the wire needs to
be cut. Remove the clevis from the servo arm and remove
the pushrod wire from the fuselage.
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7. Cut the pushrod on the mark you made. Solder the
clevis to the wire using the "Expert Tip" below.
HOW TO SOLDER
A. Use denatured alcohol or other solvent to thoroughly
clean the pushrod. Use coarse sandpaper to roughen the
end of the pushrod where it is to be soldered.
B. Apply a few drops of soldering flux to the end of the
pushrod. Position the clevis so that 1/8" [3.2mm] of the
pushrod protrudes into the open area of the clevis.
C. Simultaneously heat the clevis and pushrod. Apply
Silver Solder (GPMR8070) to the joint. The heat of the
parts being soldered should melt the solder, thus allowing
it to flow.
D. Immediately after the solder has solidified, but while it is
still hot, carefully use a cloth to quickly wipe off the flux
before it hardens. Important: After the joint cools, coat
with oil to prevent rust. Note: Do not use the acid flux that
comes with the Silver Solder for electrical soldering.
E. This is what a properly soldered clevis looks like; shiny
solder with good flow, no blobs, flux removed.
❏
8. Remove the threaded clevis from both of the elevator
pushrod wires. Slide a silicone clevis keeper onto the
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