JetCat RX Series User Manual

JetCat RX Series

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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

Default Chapter3
- Table of Contents3
Introduction5
Quick Start Section for Rx Turbines with V10 Ecu8
- Identify Components8
Mounting the Turbine Support Equipment (Rx)9
Mounting the Turbine (Rx/Rxi)9
- Turbine Side View / Thrust Tube10
Inlet Protection10
Connections11
- Complete System Connection Diagram Rx11
- Complete System Connections Rx Photo12
- Fuel Connections Rx13
- Hopper Tank - Uat13
- Electrical Connection14
- Interconnections14
- Complete System Connection Diagram Rxi15
- System Connection Rxi Photo16
Power17
Ground Support Unit (Gsu)18
- Gsu Control Panel Descriptions18
- Gsu Switch Descriptions19
The Led I/O Board19
- Description of Leds on the Gsu and Led Board19
Jetcat V10 Ecu20
- Switching on the Ecu20
Single or Two Channel Operation21
- How to Set Your Ecu for Single Channel Operation21
Setup Failsafe Mode21
- Setting the Failsafe21
- Learn R/C". Teach the Ecu to the R/C System23
- Verify Failsafe Programing25
?Learn R/C”. TEACH the ECU to the R/C SYSTEM25
Preparing Fuel and Fuel System25
- Fueling on Board Tanks25
- Prime the Pump and System (Not Needed for the Rxi)26
Running the Turbine for the First Time26
- The Checklist26
- Before Running the Turbine26
- After Stopping the Turbine26
- Starting and Stopping the Turbine27
- After the Start Process Is Initiated, the Following Occurs27
- Automatic Cooling Process27
Gsu (Run Menu Default) Display Symbols28
- Initial Default Display Screen after Power up28
- After Power up - "Error Condition" Display Screen28
- Turbine Starting Display Screen30
- Turbine Running Display Screen30
Turbine Running States30
- Explanation of the Turbine States31
Troubleshooting33
- Most Frequent Errors. Cause and Remedy33
- Reason for an Unexpected Shut-Down34
Manual Advanced Section35
Jetcat Ecu Features Version 10.0035
- Smoker Valve36
Menu Structure40
- Menu Selections40
  - Selecting a Menu40
  - Change Values / Items40
- The Run Menu40
- The Min/Max Menu41
- The R/C Check Menu41
- The Info Menu42
- The Statistic-Menu43
- The Limits Menu43
Airspeed Sensor47
- Special Function53
  - Temperatur Adjustment53
  - Reset to Default Value54

Questions and Answers:

R
Randall StevensonAug 13, 2025
Why does my JetCat RX quit with a trail of white smoke?
- A
  Ariel EvansAug 14, 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.
S
Shawn SchmidtAug 18, 2025
What to do if my JetCat RX turbine doesn't ignite?
- V
  victoria45Aug 18, 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.
J
John BrooksAug 21, 2025
What to do if my JetCat Engine starting process fails?
- D
  Diana DunlapAug 21, 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.
C
castillopeggyAug 26, 2025
What to do if my JetCat Engine turbine ignites, but the start process is discontinued?
- S
  Stacey CervantesAug 26, 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.
L
Leslie GibsonAug 28, 2025
Why does my JetCat RX turbine quit with Watchdog Failure?
- M
  Matthew MorrowAug 28, 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.
S
Stephanie ArnoldSep 1, 2025
How to fix JetCat Engine ECU when it doesn't follow full commands from the throttle stick?
- N
  nunezmarySep 1, 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.
J
John RiceSep 5, 2025
Why does my JetCat RX Engine starter unit slips and makes noise?
- M
  Michael ColeSep 5, 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.
A
aarontapiaSep 9, 2025
What causes erratic temperature or RPM readings in my JetCat Engine EGT?
- K
  Katherine JuarezSep 9, 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.

JetCat RX Series Specifications

General

Type	Turbine
Thrust	22 - 240 N
Thrust Range	22 - 240 N
Weight	0.5 - 3.5 kg
Diameter	80 - 150 mm
Fuel	Kerosene
Lubrication	5% Turbine Oil mixed with Fuel
Starter	Electric

Summary

JetCat Three Year Limited Warranty

Safety, Meaning of Symbols

Safety Precautions

Quick Start Section for RX Turbines with V10 ECU

Identify Components

Lists and illustrates all the components included in the turbine kit.

Connections

Complete System Connection Diagram RX

Illustrates the wiring diagram for connecting the RX turbine system components.

Complete System Connection Diagram RXi

Illustrates the wiring diagram for connecting the RXi turbine system components.

Ground Support Unit (GSU)

GSU Control Panel Descriptions

Describes the layout and functions of the GSU control panel buttons and display.

GSU Switch Descriptions

Explains the function of each switch on the GSU for navigating menus.

JetCat V10 ECU

Switching on the ECU

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

Single or Two Channel Operation?

How to Set Your ECU for Single Channel Operation

Step-by-step guide to configure the ECU for single-channel RC control.

Setup Failsafe Mode

Setting the Failsafe

Details the procedure for programming the failsafe parameters in the ECU.

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

Preparing Fuel and Fuel System

Verify Failsafe Programing

How to confirm that the failsafe function has been correctly programmed.

Running the Turbine for the First Time

Starting and Stopping the Turbine

Step-by-step guide for initiating, running, and shutting down the turbine.

GSU (Run Menu Default) Display Symbols

Initial Default Display Screen After Power Up

Shows the standard display when the GSU is powered on.

After Power Up – “Error Condition” Display Screen

Describes error messages and symbols displayed after startup if issues are detected.

Troubleshooting

Most Frequent Errors: Cause and Remedy

Identifies common errors, their causes, and recommended corrective actions.

Reason for an Unexpected Shut-Down

Explains how to diagnose and identify causes for sudden engine shutdowns.

How to Diagnose a Shut-Down from the Saved Data

Guides on using logged data to determine the cause of a turbine shutdown.

Smoker Valve

Airspeed Sensor

Connection Diagram for the Airspeed Sensor

Limits Menu Parameters Assigned to the Airspeed Sensor

Calibration of the Air Speed Sensor

Reset to Default Value

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