To finish up the flying surfaces the control horn 6-32 bolts are installed in the ailerons. The process is the same as the elevators. The aileron servos are setup the same way as the elevators. Build the linkages the same way as the elevators. Right now we are not going to program the travels and adjust the control horn lengths. We will get to that when we finalize the radio programming. For now we just build the linkages and mount the servos the same as with the elevators. I used JR 9411SA servos they are a mid-size servo and save some weight. These servos are very good; I used them on my 2M models on the ailerons also. You have to use a 6” extension on the servo lead to get it into the fuse. Again the heavy duty gold extensions are the ones to use. Part # JRPA095 is the JR HD gold 6” extension. Use the same technique described above for securing the leads to each other. Dental Floss and a little drop of CA will ensure the extension never comes un-done unless you want it to. I used the small round wheels that come with the standard JR servos. Leave the aileron horn as long as possible. We’ll adjust as needed later…for now these lengths are fine.

NOTE: On my wings I found the aileron extension holes in the foam cores had some glue in them. What it appears has happened is the poly U glue like Gorilla glue was used to sheet the wings and attach the false ribs out inside the foam. This glue foams when it cures. In this case it foamed and plugged up the servo lead holes. I thought this was going to be a major issue however after sitting and thinking about it for 2 days…The only real solution ended up being a very fast fix. Use a small flash light look down the aileron servo lead holes and see if they are plugged up. This will be about 8” down hole from the root of the wing. What appears happed is a little too much glue was used on the false rib. Since this rib cuts across the servo lead route the glue foamed up and blocked the hole.

I used a 12” long, 1/2” diameter brass tube with a serrated end. A dremel cut off wheel is used to make the small notches as shown in the photo. This tube was slid into the hole until it contacted the glue. The serrated edge toward the glue blockage will cut the glue very easily…Just twist and push twist and push. The action is much like a drill bit. It took about 10 seconds on one side and about a 45secs to a minute on the other side. The glue popped out like a plug. They are shown in the photos. While I was concerned about the best way to do this fix the answer was very simple and fast.


Good news the rails installed in the wings for the aileron servos fit the 9411SA servos perfectly. No need to modify them.

Linkages: the pushrods are built the exact same way the elevator pushrods are built. Remember to clean the barb area with alcohol and let it dry before gluing the ends on the pushrods.
Things are finishing up fast and it’s a matter of cleaning up loose ends right now. Once the ailerons servos and linkage are all installed the wings are done until final programming in the radio.