Some information about the Tsubasa assembly. For the servos, I had two MKS HV 6100s mounted vertically in stock, but fortunately, Servorahmen makes a servo frame for this.
The servo location is the right size, so it fits perfectly, but there isn't much room around it.
I initially wanted to use a standard servo horn, but the servo configuration with the motor housing protruding on top doesn't allow it. Then I had the option of using ServoRahmen horns with a standard linkage, but then the aluminum tube is 4mm in diameter, not really suitable for the size of the model.
I finally found some RTGModel-type servo horns in anodized aluminum, designed for use with a 2mm threaded rod. So I went with those, using aluminum clevises from Tomas Liu Studio on the control surface.
The most critical step, and I mean it, is to precisely determine where to drill through the upper wing surface (extrados) to route the control link to the control horn of the rudder in order to minimize the gap. If you mess this up, like I did, you can always 3D print a part to make a nice cover. It looks very professional, but the truth is it's more of a cover-up, at least in my case, I prefer to be honest with you!
I didn't use extension wires because the servo wires were long enough to reach the canopy and be connected to the receiver, which is then pushed into the fuselage.
For the fin, I opted for a removable one, making a small alignment pin to ensure the rudder was perfectly vertical rather than using a pin. It's then simply taped in place.
Back to the front: I needed about 20 grams of lead for the center of gravity. I molded it to the shape of the nose. The battery is a 2S 450mAh LiPo, more than enough for two servos.
The antennas are taped at a 90° angle with Blenderm adhesive to the bottom of the fuselage.
Since the servo heads protrude slightly on the underside of the wing, I also designed and 3D-printed custom servo covers.
A quick weigh-in reveals a final weight of 365.5 grams ready to fly, with a recommended center of gravity of 48mm.