MK Control Horn Installation

If you are unfamiliar with the MK control horns, they are the tapered aluminum horns that are most favored due to their resistance to fatigue and also the ball-bearing clevis that is available to use with them. I've used these horns and clevises for years and feel that they are the best in terms of reliability and precision as well as being maintenance free.

The basic steps (except for leaving the dowel ends un-tapered) are also great for installing any type of horn in a very rugged and worry free manner.

Step 1
I used to just insert the short dowel that holds the horn into the control surface...

Step 2
Now fit the balsa blocks...

Step 3
Use a fairly slow epoxy or yellow alphiatic glue to glue the blocks into the surfaces.

Step 4
Take some masking tape and "surround" the block ...

Step 5
Now remove the tape and use a straight block with finer paper - say 240 or finer - and sand the block smooth to the surface on all three sides. It should be very smooth and flush as in photo number five.

Step 6
Now you need to locate the hole that you'll drill for the dowel...

Step 7
Now we need to make the hole for the dowel. DO NOT use a drill bit ...

Step 8
Now you should have a perfectly smooth hole in your block...

Step 9
Now we need to get those dowels ready to glue in that perfect hole ...

Step 10
If you haven't already, glue the dowels ...

Step 11
The final installation from both sides...

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