Aerobeez 89" Yak 55 Step by Step Build Guide - Part 3

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Step 29: Rudder control surface horns installed.

Step 30: Using Epoxy, apply to the 3 rudder hinges. Once coated well, insert the pivot hinges to the rudder.

Pro Tip: Use a drop of house hold oil on the pivoting area of each hinge. This will prevent the hinge from being glued stuck in one position. Before you set the hinges to dry, make sure you check the pivoting direction is correct. The hinges are to move left and right. Not up and down. Do not attempt to glue the hinges to the rudder and the vertical stabilizer at the same time. Please glue one side at a time. When the Epoxy has cured on the rudder, proceed to glue the hinges to the vertical stabilizer. Note: Do not use CA for the hinges. Epoxy is best.

Step 31: Apply epoxy to the now cured rudder hinges and insert to the vertical stabilizer.

Pro Tip: Have some denatured alcohol or acetone ready to remove any residual epoxy from the area or your hands.

Step 32: The engine wall/firewall has been marked with mounting areas for a DLE-55. Note: The provided template is not for use with a DLE-55 RA. If you are using a DLE55RA, two of the mounting positions are correct. You will need to make your own mark for the other two engine stand offs. Drill the firewall to mount the engine of your choice. Mark the area for your throttle push rod and drill for the push rod.

Pro Tip: The holes for the engine stand offs can be drilled a bit larger in diameter. Use washers when mounting the engine. The slightly larger holes for the engine stand offs will give you the ability to move the engine slightly for better centering to the cowling.

 

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Step 33: Using thin CA, apply the CA to the interior of the motor box. Allow the CA to "wick" into the triangular wood stock and firewall for better strength.

Step 34: Engine mounted and ready for cowling. Note: Test fit the cowling for the engine of your choice. Your exhaust area on the cowling will need to be cut and removed. This step is not shown as different engines have different exhaust placement.

Step 35: Install the Rudder Servo and pull/pull cables.

Step 36: Install the fuel tank. In this build Santiago chose to use the 16 oz Fortitude Fuel Tank.

Note: Use Diagram below as a reference for manual calculation.

Finish: YAK-55 Built and ready for flight!

Note: Always perform a pre-flight check. Range test your aircraft and make sure ALL the control surfaces are moving in the correct direction!

Thank you for reading our Aerobeez Step-by-Step Build Guide and for your purchase! Control surface deflections are a personal preference in your flying style. For unlimited 3D, please use the surface throw in MAXIMUM deflection before surface bind. Your Aerobeez team is available for any technical questions. Please feel free to email us at any time. Aerobeez appreciates your patronage! Now go fly, enjoy your air time with your new 89" Yak 55M!

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