Rudder and Elevator
Shots of elevator and rudder install. 11/11/06
Elevator
I used some flat aluminum plate and made a insert for the elevator control arm. Notice I have extended the clevis hole aft past the bottom of the arm.
Make a slot in the elevator to receive the arm, to the underside of the top surface. Then make a slot 90 degrees to each side of the first slot, inside the elevator, making a + shape. Fit the arm inside the slot, mark a line on the arm to show the amount you will be bonding, drill some holes in the part of the arm that will be bonded. This way you have a secure mounted arm.
The push rod is a carbon tube with allthred inside, with nuts at each end to capture the rod. The rest is easy.
Rudder
I used 4mm aluminum fittings for the carbon rudder hinge and rudder control arm.
I cut off the top of the inserts to make clean looking fittings.
For the hinge, remove the flat section of the threaded control arm and cut a slot to receive a screwdriver, at the other end drill a hole to receive the hang rod.
Drill a hole in the bottom of the rudder in line with the rudders center line, for the insert. Install the insert with the hinge rod inside the insert, this will keep the rod straight, be careful don’t get CA on the rod or threads!.
Tape the rudder to center and mark the center of the control horn inline with the rudder fairings back edge. Install the insert by drilling an additional hole in the LE of the rudder to allow you to get epoxy to the inside of the rudder, and bond the insert.
Mounting the rudder servo is easy and in this case I used a left over aluminum servo mount with a plywood backer. Every one has there way of doing this. Just keep it clear of the retract arm.
One tip, I use masking tape on all serfaces when using epoxy, it keeps things tidy.
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