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JetCat RXi Series - User Manual

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Ingenieurbüro CAT, M. Zipperer GmbH, Wettelbrunner Straße 6
79282 Ballrechten-Dottingen
Tel: + 49 (0) 7634 - 5056 - 800
Fax: + 49 (0) 7634 -5056 - 801
Internet: www.jetcat.de
JetCat RX/RXi Turbines with V10 ECU
V1.2

Table of Contents

Questions and Answers

  • J
    Jaime HarrisAug 12, 2025
    Why does my JetCat RXi Engine quit with a trail of white smoke?
    • L
      Lori DeanAug 13, 2025
      The engine quitting with white smoke is typically caused by air in the fuel system or fuel failure due to low RPM. Ensure there are no leaks in the fuel system, and most importantly, remove all air from the fuel filter. The fuel filter should hang freely, preferably mounted vertically. When purging the fuel system, tap the filters while the pump runs to dislodge trapped air. Consider using a BVM Ultimate Air Trap.
  • M
    Michael OlsenAug 16, 2025
    What to do if my JetCat Engine turbine doesn't ignite?
    • J
      Joseph HarrisAug 16, 2025
      If the turbine fails to ignite, the fuel supply lines may be empty or not purged, the ECU battery might be weak, or the kero start igniter could have failed. Ensure you purge the fuel system using the Test Functions Menu and charge the ECU battery. In rare cases of igniter failure, contact JetCat for information about using a temporary external plug.
  • Y
    yhannaAug 20, 2025
    What to do if my JetCat Engine starting process fails?
    • K
      Kevin ContrerasAug 20, 2025
      If the starting process fails, it could be due to several reasons: * The turbine is still too warm; make sure the Cool Down sequence is completed (wait until the green OK LED stops blinking). * Low battery or faulty connection; charge the battery and check the ECU's battery connection. * Defective glow plug (red Pump running LED blinks); replace the glow plug. * Three-conductor cable for starter motor and glow plug disconnected; check the cable and ensure a proper connection from the ECU to the turbine.
  • S
    Sara JarvisAug 23, 2025
    What to do if my JetCat RXi Engine turbine ignites, but the start process is discontinued?
    • D
      Daniel FranklinAug 23, 2025
      If the turbine ignites but the start process is discontinued, it may be due to air in the fuel feed lines or the fuel pump not running. Check for air leaks in the fuel system, examining all Festo fittings, nipples, clunk, and filter. Also, check for fuel filter clogs. Test the pump in the Test Functions menu; the fuel pump must run as soon as the red Pump running LED illuminates.
  • M
    Michael MaciasAug 27, 2025
    Why does my JetCat RXi Engine turbine quit with Watchdog Failure?
    • L
      Laura ScottAug 27, 2025
      If the turbine quits with a Watchdog Failure, it indicates that static discharge reset the ECU. To prevent this, avoid mounting the ECU directly to the fiberglass body of the plane. Use a plywood mount with foam tape and Velcro between the body and the ECU. If the plane has a glossy finish and the failure occurred after takeoff, spray the tires with an anti-static spray.
  • C
    Christopher SandersAug 31, 2025
    How to fix JetCat Engine ECU when it doesn't follow full commands from the throttle stick?
    • K
      Kimberly WhiteheadAug 31, 2025
      If the ECU isn't following throttle stick commands, it's likely due to a programming alteration in the R/C transmitter. Check the alignment with the RC-Check menu and re-align the ECU to the R/C system.
  • A
    Alexander GrahamSep 4, 2025
    Why does my JetCat Engine starter unit slips and makes noise?
    • C
      cruzjohnSep 4, 2025
      If the starter unit slips and makes noise, it's caused by dust and oil sediment on the compressor nut and O-ring. Clean the O-ring and compressor nut periodically with a cotton swab and solvent.
  • G
    George HollowaySep 7, 2025
    What causes erratic temperature or RPM readings in my JetCat RXi EGT?
    • L
      Leah JacobsonSep 7, 2025
      Erratic temperature or RPM readings from the EGT can be caused by the transmitter antenna being too close to the model. Keep the antenna away from the model, as this can cause false readings.

Summary

JetCat Three Year Limited Warranty

Safety, meaning of symbols

Safety Precautions

Outlines essential safety measures and warnings for operating the turbine model.

Quick Start section for RX turbines with V10 ECU

Mounting the turbine support equipment (RX)

Mounting the turbine (RX;RXi)

Details the process of attaching the turbine to the model using the provided bracket.

Connections

Complete System Connection Diagram RX

Complete System Connections RX Photo

Fuel connections RX

Hopper Tank - UAT

Electrical connection

Interconnections

Power

Ground Support Unit (GSU)

GSU Control Panel Descriptions

Explains the functions of the buttons and display on the GSU control panel.

GSU Switch Descriptions

Details the function of each key or switch on the GSU for menu navigation and operation.

The LED I;O Board

Description of LEDs on the GSU and LED board

JetCat V10 ECU

Switching on the ECU

Provides instructions on how to power on and off the JetCat V10 ECU.

Single or two channel operation?

How to set your ECU for single channel operation

Guides on configuring the ECU for single-channel control of the turbine.

Setup failsafe mode

Explains how to set up the failsafe feature for radio failure detection.

“Learn R;C”. Teach the ECU to the R;C System

Preparing fuel and fuel system

Fueling on board tanks

Prime the pump and system (Not needed for the RXI)

Running the turbine for the first time

Guides the user through the initial startup and operation of the turbine.

The Checklist

Lists critical checks to perform before starting the turbine for the first time.

Starting and stopping the turbine

GSU (Run menu default) display symbols

Initial default display screen after power up

After power up - “error condition” display screen

Explanation of the Turbine States

Troubleshooting

Most frequent errors. Cause and remedy:

Lists common errors, their probable causes, and recommended remedies.

Reason for an unexpected Shut-Down

How to diagnose a shut-down from the saved data

Manual advanced section

JetCat ECU features Version 10.00

Menu Structure

Selecting a Menu

The RUN Menu

The Min;Max Menu

The R;C Check Menu

The INFO Menu

The Statistic-Menu

The LIMITS Menu

Allows adjustment of operational limits and parameters for model-specific tuning.

Airspeed Sensor

Speed control mode features

Airspeed Sensor Control Modes

SPDCTRL SW0 ACT

SPDCTRL SW2 ACT

Hold Speed and Cruise Control limitations:

Calibration of the Air Speed Sensor

Special Function

Temperatur adjustment

Reset to Default Value

JetCat RXi Series Specifications

General IconGeneral
RPM Range33, 000 - 118, 000 rpm
Exhaust Gas Temperature (EGT)550-750 °C
Fuel TypeJet A1, Diesel, Kerosene
Lubricationapprox. 5% fully synthetic turbine oil
Maintenance Interval50 hours
TelemetryYes
StarterElectric starter

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