3DUpito — Build Manual

// 01 — AIRCRAFT DATA

Specifications

Wingspan

784mm

Length

442mm

Wing Area

11dm²

CG Position

10mm LE

Est. AUW

~1,130g

Cruise Speed

50km/h

Max Speed

~130km/h

Wing Loading

72g/dm²

Airfoil

MOD MH61

Config

PUSHER FW

Material

PLA-CF

System

6SLiPo

⚠ Weight Note

Printed 3 walls / 3 top-bottom vs spec 1/2. Estimated print weight ~690g vs 360g spec. Total AUW ~1,100–1,150g. Thrust-to-weight still favorable on 6S + 2807.

// 02 — BILL OF MATERIALS

Parts List

Power System

Component	Specification	Qty
AOS Supernova 2807	1400KV · 4-6S · 960W · 47g	4
Spektrum Avian 45A	45A · 4-6S · BEC 5V · Telemetry	1
6S LiPo Battery	1300–2200mAh · XT60 · TBD	TBD

Motor Inventory

AOS 2807

● INSTALLED

AOS 2807

○ SPARE

AOS 2807

○ SPARE

AOS 2807

○ SPARE

Radio System

Component	Specification	Qty
Spektrum AR631T+	6-Ch · AS3X · SAFE · DSMX	1
Spektrum Transmitter	DSMX · Delta/FW Mix Required	1
9g Servo — Left Elevon	9g · Standard PWM · CH3	1
9g Servo — Right Elevon	9g · Standard PWM · CH2	1

Propellers

Model	Specification	Sets
DAL Cyclone T5040C	5" · 4.0P · Tri-blade · PRIMARY	4×4
DAL Cyclone T5045C	5" · 4.5P · Tri-blade · STEP-UP	1×4

Connectors

Connector	Application
Bullet Connectors (3.5mm)	Motor Phase A/B/C → ESC Output
XT60	Battery (+) → ESC Main Power Input

// 03 — WIRING SCHEMATIC

Wiring Diagram

← SCROLL HORIZONTALLY ON MOBILE →

⚡ Pusher Motor Direction

Before prop install: verify motor spins correct pusher direction. Swap any two bullet phase wires to reverse. Confirm at low throttle — prop should push air rearward. Do this with prop removed.

⚠ Bullet Connector Sizing

AOS Supernova 2807 typically uses 3.5mm bullets. All three phase connections must be fully seated and heat-shrink insulated. Phase order does not matter for direction — swap any two to reverse spin.

// 04 — RADIO SETUP

Channel Assignments

✓ TX Setup Required

Set wing type to Delta / Flying Wing in Spektrum TX. This activates elevon mixing — CH2 and CH3 become combined aileron+elevator outputs. Mix in TX, not in AR631T+.

Function

Connected To

Throttle

Motor speed control

Avian 45A ESC Signal Wire

Aileron / Right Elevon

Roll + Pitch mixed

9g Servo — Right Wing

Elevator / Left Elevon

Roll + Pitch mixed

9g Servo — Left Wing

Rudder

Unused — flying wing

N/C

Gear / AS3X Toggle

AS3X on/off

Switch → AR631T+ Ch5

Aux / SAFE Mode

SAFE off / on / panic

3-pos switch → AR631T+ Ch6

⚠ Servo Reversal Check

Right stick right = right elevon up + left elevon down. Back stick = both elevons up. Correct reversals in TX per channel — do not reverse in AR631T+.

// 05 — STABILIZATION

AS3X + SAFE Setup

AR631T+ Orientation

Mount flat and level inside fuselage, aligned with roll and pitch axes. Use the Spektrum Mobile App to define receiver orientation if not in default position.

✓ Binding Procedure

1. TX off. Insert bind plug into BIND port on AR631T+. Power receiver — LED flashes rapidly. Remove bind plug. Put TX in bind mode. LED goes solid = bound. Power cycle both to confirm.

AS3X Starting Gains

ROLL GAIN25%

PITCH GAIN30%

YAW GAIN20%

⚠ Oscillation = Reduce Gain

If rapid oscillation occurs on any axis, reduce that axis gain 20% at a time. Reverse-swept flying wings can be roll-twitchy. Stay conservative on maiden flights.

SAFE Configuration

Parameter	Setting	Notes
Bank Angle Limit	45–55°	Prevents full roll in SAFE mode
Pitch Angle Limit	30–40°	Up and down combined
Panic Recovery	Enabled	3-pos switch position 3
Level Calibration	Flat surface · Props off	Before every maiden

ℹ Yaw Authority Note

No rudder surface — SAFE yaw correction is limited. Expect some yaw slip in tight turns at low speed. Normal for a flying wing. AS3X yaw gain helps but cannot fully correct.

// 06 — FLIGHT TUNING

Tuning Parameters

Center of Gravity

CG Position

10mm

Reference

LEADING EDGE

Target

LEVEL / NOSE↓

Elevon Travel

Upward

~15mm

Downward

~12mm

✓ Initial Elevon Trim

Apply 2–3mm upward deflection to both elevons at neutral stick. Required for stable flying wing flight. Adjust in 0.5mm increments based on flight behavior.

Power System — Throttle Reference

Condition	Throttle	Est. Amps
Cruise (50 km/h)	15–20%	~8–12A
Sport / Climb	40–60%	~20–30A
Full Throttle	100%	~40–44A

Battery Options (6S)

Capacity	Est. Weight	Est. Flight Time
1300mAh 6S	~190–210g	~6–8 min
1500mAh 6S REC.	~220–240g	~8–10 min
2200mAh 6S	~320–350g	~12–15 min

// 07 — PRE-FLIGHT

Pre-Flight Checklist

CHECKLIST READY Tap each item to mark complete

CG VerifiedBalance at 10mm from LE — level or slight nose down with battery installed
Control Surface Direction ConfirmedRight stick right = right elevon up + left down. Back stick = both up
Elevon Trim Set2–3mm upward deflection at neutral stick confirmed
Motor Direction — Pusher ConfirmedProp pushes air rearward at low throttle. Props OFF during bench test
Bullet Connectors SecureAll three motor phase wires fully seated and heat-shrink insulated
XT60 Battery Connection SecureFully seated, no tension on wire, battery locked in holder
Prop Installed — Correct Pusher OrientationLeading edge of blade faces correct direction for pusher thrust
Prop Nut TightProperly torqued — do not over-tighten on aluminum shaft
AR631T+ SAFE Level CalibratedPerformed on flat surface with aircraft level and props off
Wings Locked — Pin B SecuredBoth wings clicked to fuselage, no play or rocking
Canopy / Hatch LockedSpring latch engaged — cannot open in flight
Pushrod Linkages — Zero SlopServo rod connectors tight, no flex in pushrods under load
Range CheckWalk 30m from aircraft — verify full control response with TX antenna angled away
Battery Voltage Confirmed6S = 25.2V full. Do not fly below 21V (3.5V/cell)
Wind CheckMaiden under 10 km/h winds recommended. Launch into wind