How to install Gyro for Freewing RC Jet Airplane

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Gyro install for Freewing RC Jet Airplane

what is GYRO?

Gyros are devices designed to stabilize an aircraft. They are typically the size of an average receiver or small ESC. Gyros are connected in between the servos and the receiver, and mix their input with the input from your fingers. These inputs are calculated by the gyro, to counteract forces acting on the plane. The result is that the gyro can react much faster than our eyes and fingers can, to properly adjust an aircraft's control surfaces to produce stable flight.

A common use of a gyro is to prevent a tail-dragging plane from torque rolling to the left during takeoff. Another advantage is that an aircraft with a properly configured gyro can fly more stably in much higher wind conditions than an aircraft without a gyro.

While a properly configured gyro can be a great benefit to your flying experience, an improperly configured gyro can be very dangerous and lead to crashes and other damage. It is crucial that pilots read the complete instruction manual and follow all setup videos to ensure their gyro is installed correctly and configured properly.

Gyros are best installed on an aircraft after you have already maidened the aircraft and flown it a couple of times, to trim its control surfaces and verify your preferred CG position. Only after those factors have been finalized, should a gyro be installed. In agreement with the manufacturer's manual we do not recommend maidening a new aircraft with a gyro installed, even if that gyro is turned off.

Depending on the sensitivity of the gyro, which can be adjusted by a pilot for his or her preference, a gyro can play a large part of the flight stability of an aircraft. That being said, a gyro will not actually fly an aircraft for you, so gyros should not be considered a tool to help a pilot fly an aircraft which he or she is not yet ready for. A gyro is a supplement to an aircraft the pilot must already be able to fly safely. A gyro is not an enhancement to be relied upon to allow a new pilot to fly, for example, a big 90mm 100mph jet when that pilot's experience so far is limited to small 30mph parkflyer trainer planes.

See the other articles in this Gyro section for more detail on the performance and advantages that gyros can offer your RC flying experience.

How to install Freewing EG01 (Guard 6‑Axis Gyro) for Freewing F‑22 Raptor 80mm EDF

how-to-install-freewing-guard-6‑axis-gyro-for-freewing-f‑22-raptor-80mm-edf-jet > Note: Some PNP versions come **pre‑installed with EG01 gyro**. If your plane is the basic PNP (no gyro), follow this guide to add the official Freewing Guard EG01 6‑axis gyroFreewing M....

## 1. Tools & Parts Needed

- Freewing EG01 Guard 6‑axis gyro + original harness cables
- 3M double‑sided foam tape / EVA anti‑vibration pad (included with EG01)
- Small screwdriver
- Flat stable surface for gyro calibration
- Your 6–8 channel radio + receiver

## 2. Physical Mounting (Critical Step)

1. Open the fuselage / battery hatch, locate the internal wooden mounting plate near the CG (center of gravity).
2. Stick the EVA vibration pad then 3M tape to the bottom of the EG01 gyro.
3. **Mount rule**:
- Gyro PCB edges must run **parallel to the fuselage length** (nose ↔ tail).
- Logo / LED side points **toward nose OR tail** (do NOT rotate sideways).
- Keep the gyro flat; avoid tilted installation — misalignment causes unstable flight / loss of control.
4. Secure gently; do not over‑compress the foam pad (light vibration isolation only).

## 3. Wiring Diagram (EG01 inline between receiver and servos)

The EG01 works as an inline stabilizer:

1. Receiver servo outputs → **Gyro input ports**
2. **Gyro output ports** → Plane’s servos (Aileron / Elevator / Rudder)
3. Power: 4.8–8.4V from the plane’s UBEC powers the gyro (uses existing servo power)

>
> Standard channel mapping for this F‑22:
>
>
> - CH1 Aileron
> - CH2 Elevator
> - CH3 Throttle (EDF motor ESC, **DO NOT route throttle through gyro**)
> - CH4 Rudder
> Optional: CH5 Flaps, CH6 Gyro Mode Switch, CH7–8 Thrust Reverse

⚠️ **Important**: Throttle (ESC) stays wired directly receiver → ESC, bypass the gyro entirely.

## 4. Radio Prep Before Powering Up

1. Turn transmitter ON first.
2. Set throttle stick to **lowest position**.
3. Ensure all trims are centered on your radio.
4. Assign a spare switch on your radio to the gyro mode channel (gain / off / self‑level, per EG01 manual).

## 5. Power On & Gyro Calibration

1. Put the jet on a perfectly flat, level hard surface. **Do not touch or move it during calibration**.
2. Connect flight battery to the plane.
3. Wait 8–12 seconds for EG01 auto calibration; watch the gyro LED.
4. When LED solid / steady, calibration finishes.

>
> If you move the plane during boot, power off, set flat, and repeat calibration.

## 6. Ground Test & Direction Check

1. Keep EDF fan clear of people; secure the jet.
2. Move transmitter sticks:
- Confirm all control surfaces move the correct direction.
- If a surface reverses: use radio channel reverse, do not flip gyro physically.
3. Test gyro mode switch: toggle gyro ON / OFF to verify stabilizer engages/disengages.
4. Adjust gyro gain on your radio: start with low gain, increase gradually after test flights (too high = wobble / oscillation).

## 7. Final Checks Before Maiden Flight

1. Verify CG matches the mark under the main wing of the F‑22 80mm.
2. Double‑check all servo plugs are fully seated, no loose wires near the EDF fan.
3. Confirm gyro is still flat and secured after closing fuselage.
4. Do a short taxi test to check nose steering and gyro behavior before takeoff.

## Common Troubleshooting

- Plane oscillates / wobbles in air: Reduce gyro gain, check foam pad for over‑tightening.
- Gyro does not stabilize: Check wiring direction, redo flat‑surface calibration, confirm gyro orientation.
- Controls reversed: Fix channel reverse in transmitter settings.

## Alternative: Full Flight Controller (ArduPilot / Betaplane)

If you meant a full autonomous flight controller (not simple EG01 gyro stabilizer):
You will need to rewire all servos, ESC, receiver, GPS, and configure firmware for flying‑wing / EDF jet layout, plus adjust gyro orientation parameters in the configurator software.

This is more advanced than the official Freewing plug‑and‑play EG01 gyro.

Quick Reference Cheat Sheet for EG01 on Freewing F-22 80mm EDF

Wiring

1. Receiver → EG01 Input: AIL, ELE, RUD, PPM/MOD (spare channel for mode switch)
2. EG01 Output → Plane servos: Aileron, Elevator, Rudder
3. ESC/Throttle: Direct receiver → ESC, bypass gyro
4. Use Freewing Flight Assistant App + BlueBridge Bluetooth module (USB‑C on EG01) to configure delta-wing mixing, gain, and gyro directionturborideo...

Mounting (F‑22 specific)

• Mount on the wooden plate near factory CG mark inside fuselageFreewing-m...
• Gyro flat, edges parallel to fuselage; logo/LED facing nose OR tailShopify CD...
• Use included EVA anti‑vibration pad + 3M tape, do not squeeze foam flat

Radio Setup

• Radio model type: Normal / conventional wing (gyro handles delta mixing, do NOT use radio elevon mixing)
• Assign a 3-position switch to the PPM/MOD channel for: Gyro OFF / Stabilize / Self‑Level
• All trims centered, throttle low before powering aircraft

Calibration

1. Transmitter ON first
2. Jet on perfectly flat hard surface
3. Connect flight battery, leave still for ~10 seconds until LED completes boot/calibration
4. If you moved it during boot: power off, re-level, repeat

Gain Starting Point

• Stabilize gain (AIL / ELE / RUD): 40–45 initial value
• Self-level gain: 40–45 initial value
• If surfaces oscillate/wobble in flight: lower gain step by step

Important Pre-Flight Checks

1. Verify control surface directions (reverse in radio, do not flip gyro)
2. Confirm CG matches Freewing’s printed mark under wing
3. Secure all wires away from the 80mm EDF fan
4. Ground test gyro switch works before taxi / takeoff

Troubleshooting Quick List

• Unstable / wobbling: Reduce gain, check foam pad is not compressed, redo calibration on flat surface
• Gyro does nothing: Check PPM/MOD channel wiring, confirm mode switch assignment
• Wrong mixing: Open Freewing Assistant App and set aircraft type = Delta / Flying Wing