ELECTRIC POWER COMPONENTS
These are the components I have been using in the 3M and 3.5M with good performance and reliability.
Aloft Hobbies has setup component pages for each model and is working on increasing inventory. 4/9/2020
ArmSoar is now stocking the KST Daviga DS213 MG Servos
https://armsoarusa.com/collections/kst-servos/products/kst-ds213mg
Aloft can provide the Bluebird BMS-127WV Servo’s which is another great choice.
https://alofthobbies.com/blue-bird-bms-127wv.html
Line Launch
https://alofthobbies.com/yellow-jacket-3m-35m-f3-line-launch-flight-pack.html
Electric
https://alofthobbies.com/yellow-jacket-3m-35m-f5-electric-flight-pack.html
Motor
First choice is the DualSky from Aloft Hobbies, the wires exit further back and eliminate routing concerns
https://alofthobbies.com/dualsky-xm2838eg-11l-1.html
https://hobbyking.com/en_us/turnigy-aerodrive-sk3-2836-1040kv-brushless-outrunner-motor.html
SPEED CONTROLLER ESC
BULLET CONNECTORS
For connecting the motor to ESC
https://hobbyking.com/en_us/3-5mm-3-wire-bullet-connector-for-motor-5pairs-bag.html
XT60 PIGTAIL
For connecting the ESC to the Battery with XT60 Connector
https://hobbyking.com/en_us/xt60-male-w-12awg-silicon-wire-10cm-5pcs-bag.html
BATTERIES FROM ALOFT
1300 mah should also allow balance with no added weight
https://alofthobbies.com/tattu-850-3s-45c.html
PROPELLER AND SPINNER FROM Aloft Hobbies
Aeronaut CAM 11×7 Folding
Top Model 34mm Turbo Spinner
Select collet for motor of choice
3.5M Flap Installation
1/64″ ply is laminated on top of the center panel lower trailing edge, I used laminating epoxy to avoid warping. Its aligned to the rear edge just inside the outer bays on each side of center panel. The horn slot is positioned towards the center of the panel.
The reinforcement comb is pressed down over the ribs. Use the 1/8 balsa hinge line reinforcement to space the comb 1/8″ forward of the lower trailing edge.
Once the resin is dry the outside edges are cut to isolate the flap section. A sharp Xacto knife and straight edge helps getting a straight clean cut.
The ribs are cut at the comb edge to separate the flap section
The 1/8″ balsa hinge line support is glued to the comb.
Triangle gussets glued in place in each corner to reinforce the joint.
The forward lower balsa trailing edge is trimmed at the front of the 1/64 ply
Add the balsa and 1/64″ ply to the control horn area. The balsa will need to be sanded and fit. When the control horn is installed it needs to engage through both pieces of 1/64 ply.
Fabricate ribs for the ends, glue the top trailing edge on, then glue the rear 1/8″ balsa hinge support to the front of the flap. Trim and sand the forward hinge to match.
The servo tray consist of three pieces. 1) fits in the rib notches. 2) is glued to (1) and provides the method to secure the servo/tray to the assembly. You will notice a laser line on (1) which is used to align (2). (3) the removable tray holds the servo. The servo can be secured with good double sided tape or canopy glue so the servo can be serviced if needed.
The control horn should angle rearward when installed in order to achieve maximum throw. There are two control rod holes in the horn, I have been using the inner or closest hole to the flap in order to get the proper throw. It depends on the servo horn length. Linkage is not provider for the flaps.