Arrows Hobby T-33 50mm EDF Jet Full Assembly Guide (PNP Version ARR019P)

Important Prep Notes

This is a PNP kit. EDF motor, ESC, 3��9g servos are pre-installed inside fuselage.

What you need to supply: 4/6CH radio + receiver, 3S LiPo 1300�C2200mAh XT60, LiPo charger.

Required glue: Foam-safe medium CA glue (standard CA melts EPO foam �� DO NOT use regular superglue).

Recommended build time: 20�C30 minutes.

Step 1: Unpack & Inspect All Parts

1. Fuselage (prebuilt with EDF, ESC, servos, wiring harness)
2. One-piece main wing
3. Horizontal stabilizer (tailplane)
4. Pair of wing tip auxiliary fuel tanks
5. Hardware bag: 4�� KA2.0��12mm screws
6. Pushrods / control linkages

Step 2: Install Main Wing

1. Route the aileron Y-harness wire through the fuselage wing cutout slot.
2. Slide the full wing into the fuselage wing saddle carefully. Do not pinch servo wires.
3. Secure wing with the four supplied KA2.0��12mm screws.
   Do not over-tighten screws �� risk crushing EPO foam.
4. Tuck excess wiring neatly into fuselage cavity.

Step 3: Mount Horizontal Stabilizer (Elevator Tail)

1. Dry-fit horizontal stabilizer into the rear fuselage tail slot. Confirm perfect alignment.
2. Apply foam-safe CA glue onto the mating surfaces of stabilizer and fuselage. Insert firmly.
3. Wait for glue to fully cure.
4. Connect elevator pushrod between servo arm and elevator control horn. Adjust linkage so elevator is neutral (level) at radio center stick. Secure the linkage keeper.

Step 4: Install Wing Tip Auxiliary Fuel Tanks

1. Distinguish left / right tanks �� they are not identical.
2. Dry fit tanks onto the dedicated slots on wingtips.
3. Apply foam-safe CA glue and mount both tanks. Leave glue to cure fully.

Step 5: Radio Wiring & Receiver Setup

1. Open the cockpit battery hatch. Locate the servo wiring harness inside fuselage.
   Standard receiver channel wiring (Futaba layout):

• Ch1 Aileron
• Ch2 Elevator
• Ch3 Throttle (EDF fan)
• Ch4 Rudder (unused on basic T-33; Vector version uses extra channels)

If you have the Vector gyro-equipped variant, follow the manual��s channel switch assignments for gyro modes.

2. Mount your receiver in the empty cavity near the battery hatch. Secure with double-sided foam tape.
3. Neatly bundle all loose wires to avoid interfering with battery movement.

Step 6: Battery Installation & Center of Gravity (CG) Setup

1. Install hook-and-loop tape inside battery bay and onto your LiPo battery.
2. Slide battery into fuselage battery compartment; fasten with built-in strap.
   Official CG Position: 60�C70 mm back from wing leading edge at wing root

• Move battery forward = nose heavier
• Move battery rearward = tail heavier
  Test balance by lifting aircraft at CG point; slight nose-down balance is ideal for first flights.

Step 7: Pre-Flight Servo & Radio Test (Critical Safety Step)

1. Transmitter ON FIRST. Set throttle stick to minimum/low position.
2. Connect LiPo battery to the ESC XT60 plug. Wait for ESC initialization beeps.
3. Test all control surfaces:
   • Ailerons: left/right stick �� wing ailerons move correctly
   • Elevator: fore/aft stick �� elevator tilts up/down
4. Verify servo travels are smooth; no binding on linkages.

The ESC has throttle safety start. Fan will NOT spin unless throttle is at low position on power-up. Keep hands clear of EDF inlet/outlet at all times.

Step 8: Final Preflight Checklist Before Maiden Flight

1. All glue joints fully cured
2. Wing, tail, tip tanks securely fastened
3. All control linkages locked, no slop
4. CG correctly set
5. Radio range test completed
6. LiPo fully charged
7. Check EDF fan: no rubbing inside shroud, free rotation by hand

Common Assembly Troubleshooting Tips

1. Foam melting: Always use foam-safe CA glue only.
2. Servo binding: Reposition wiring; check pushrod alignment.
3. Fan fails to spin: Confirm throttle at lowest position when connecting battery; check XT60 connection.
4. Loose tail: Add small extra amount of foam-safe CA along stabilizer seam.