FLAP INSTALLATION
Similar to the aerilons, I went my own way. Reading several other builds on this Carf plane, it is apparent that it's very hard to get a total of 85 degrees deflection using the Carf method of completely hiding the control arm inside the wing.
I put the Flap control arm and the holding plate for the servo underneath the Oil Cooler and on the other wing under the Radiator. In this way very little is exposed of the control mechanism for the movement of the flap.
But since there is a lot of load against the flap when it is fully deployed, I added some extra support on the inside. All of this is held together with Locktite Epoxy glue. I purchased some control horns from SDS Hobbies and these were the parts that came with it. I drilled out the black nylon base to accept my own Hanger 9 10-32 bolt and clevis. The SDS bolt was only 3mm that I did not think was strong enough.
The weight for the parts for the flap system was 108 grams.