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Recommended commercial oil is 

Deluxe Power Model Jet Oil.

 

 

 

Other commercial turbine oils like Kingtech oil, Fuchs… can be used. 

 

Don’t use Jetcat oil or Jackadofsky oil on the X45. These cause a lot of bearing drag when 

cold causing difficult or impossible start-up. 

 

 

 

It is allowed to use a 5% of oil contents for compatibility with other engine brands; this will 

cause a higher fuel consumption and increased possibility of internal carbon building. Use 4% for 
X45 if not using the recommended oil. 

 

Full size turbine oils can be used, but are not recommended because these oils are not in-

tended to be burned; they are irritant and contain neurotoxic chemicals such as tricresyl phos-
phate that in long term could impact negatively on the health of operators and other persons 
breathing the exhaust fumes. 

 

Aeroshell 500 should not be used at all due to high residues left on bearings. 

 

Do not use 2 stroke oil alone (4%).  This will gum the bearings causing difficult or impossi-

ble start-up when engine is cold. 
 

Please refer to the Xicoy Office for guidance in the first instance in event of any issue or concern. 

Engine Description 

 
The X series engines are miniature turbojets designed and produced specifically to produce thrust 
to power small model aircraft. Each has a single stage billet machined centrifugal compressor and 
single stage cast Inconel axial flow turbine mounted on a single shaft. The engine is fitted with a 
long life ceramic glowplug which enables the engine to initiate combustion directly on liquid fuel 
after which further fuel is gradually introduced into the main part of the combustion chamber to 
provide combustion heat to operate the engine. A high speed brushless electric starter motor fitted 
with a clutch mechanism to the front provides drive to the rotor up to and beyond self-sustaining 
speed for starting the engine. The starting sequence is controlled by an electronic system fitted to 
the  engine  (ECU)  which  initiates  the  start  sequence  and  controls  the  parameters  of  the  engine 
within design limits. 
 
The engine rotor shaft is supported by two ceramic bearings which are lubricated by a small per-
centage bleed off the pressurized main fuel supply, which should contain a small percentage of oil 
for this purpose. The rotor discs are separately balanced and then 2-stage dynamically balanced 
on assembly to the engine. Disturbing the rotor will lose this delicate balance and the engine will 
need to be returned to a service unit for rebalancing. 
 
The fuel for the engine is provided from a fuel tank and fed through a small pump driven by a 3-
phase  (brushless)  motor  that  has  its  own  intelligent  control. Each  engine  has  its  own  dedicated 
pump type and may not be mixed. 

Summary of Contents for XICOY X Series

Page 1: ...Page 1 Xicoy TurboJet Engines User Manual Version 1 4 2022...

Page 2: ...tion of small jet engines Features Massive thrust in tiny industry beating case sizes Low thrust Low installed weight Valves installed on engine ECU mounted on engine Internal kero burner and thermoco...

Page 3: ...y available through your local dealer and via email Xicoy Electr nica SL Pla a Pere Llauger Nau 18 08360 Canet de Mar Barcelona Spain Web site www xicoy com Email sales xicoy com See our new turbine w...

Page 4: ...d ECU battery 29 Radio Setup 30 Aligning transmitter with ECU 31 Failsafe 32 Preparing the engine for running 32 During start up general 33 First engine run 33 Starting the engine 34 1st Run 34 Adjust...

Page 5: ...m date of completed purchase or 25 running hours whichever comes first Warranty is valid solely for the original 1st owner and is non transferable upon resale Warranty included all supplied parts and...

Page 6: ...hort circuit or reverse polarity on battery or engine cable connection 3 Unauthorized maintenance and or modifications have been made to any part of the product including unlocking of the ECU and chan...

Page 7: ...run the engine in open air as engine exhaust contains gases which can cause as phyxiation and nuisance smells The engine WILL be very hot while running so please don t touch it Keep clear anything af...

Page 8: ...any kind of restriction on the intake or the exhaust or on the model The suction is more powerful than any vacuum cleaner and can do severe damage to anything passing into the intake It can also coll...

Page 9: ...ne also fea tures an internal thermocouple This avoids the danger to this delicate component being outside the engine from the usual knocks and bumps associated with engine install and refit If the th...

Page 10: ...bs Idle thrust 1 9N 0 4lbs 3 3N 0 7lbs 4 3N 0 9Lb 4 8N 1 1Lb Max rpm 225k 176k 150k 122k Min rpm 60k 48k 40k 28k EGT at max thrust 550 700 C 550 700 C 550 700 C 550 700 C Fuel consumption at max thrus...

Page 11: ...se batteries cannot deliver the peak amperage 20 30A necessary for starting Battery consumption As example in mAh battery use on average the X45 engine uses Start up 100mAh for X45 About 20mAh 30mAh f...

Page 12: ...START menu to select your fuel Kero Diesel The ECU automatically adjusts start settings for each fuel Oil The engine requires oil for lubricating bearings This should be mixed at 4 with the fuel and a...

Page 13: ...craft Each has a single stage billet machined centrifugal compressor and single stage cast Inconel axial flow turbine mounted on a single shaft The engine is fitted with a long life ceramic glowplug w...

Page 14: ...nt supplied 2 The 3 wire connecting cable from the engine to the connector board should be carefully routed away from the engine intake so there is no possibility of the wire being accidentally ingest...

Page 15: ...ose parts dust or debris being allowed to enter the compartment where the engine is installed Always use the sup plied FOD screen but regard this as a last line of defence and not as a reason not to p...

Page 16: ...Page 16 the greatest flight security The engine can accommodate any slight changes due to the installa tion Don t forget to blank off and cover the end of the fuel feed pipe to keep it clean...

Page 17: ...The ECU is programmed specifically for each engine with the engine operating characteristics start parameters throttle curves and operating routines Some of these are user settable like the radio setu...

Page 18: ...the heating effect on the engine on a start If slow to heat up then the value can be raised to the next level 100 which should be sufficient If the flow is too high perhaps the pump is very strong it...

Page 19: ...deceleration ramps and idle speed In practice this means it is no longer needed for the User to provide any adjustment for day to day ambient conditions as these are now taken care of by the ECU Wher...

Page 20: ...powering up the ECU will recognise it and if you try to use the wrong size pump you will get an error message and the engine will not allow a start Construction Inside the sturdy machined aluminium ho...

Page 21: ...and reverse connecting the polarity of the power supply wires will also not make it run but may destroy the internal pump controller so don t risk ruining your pump by modifying your cable just get t...

Page 22: ...ally electrically con nected to the connector board so requires no additional lead but cannot be removed from the plane The other shown below right is a separate multicolour high resolu tion display m...

Page 23: ...k x to go initial screen Button Player to go Player Radio Check to go Radio Check Button Last Shutdown to go Last Shutdown Button File to go File Player Screen ButtonBack x to go initial screen Button...

Page 24: ...ton 2nd in from left You will then see a screen showing 4 items the radio signal Pulse 0 xxxx uS the throttle stick percent x the battery voltage vb x x V and the current draw Ib x x A x any number Pr...

Page 25: ...t the start and white smoke from exhaust In this case adjust upwards by 0 2v Having too high a setting shortens the life of the glowplug There are no more functions to adjust in this branch so exit by...

Page 26: ...you can normally hear a small squeek when activated and a hissing sound from inside the engine Beware sometimes a woomf of small flame can appear at the ex haust if any residual fuel left Again use o...

Page 27: ...or setting up the transmit ter or proceeding to other options The transmitter setup is show in the relevant section in detail so now choose the No option THRUST CURVE You now get to the setting for th...

Page 28: ...n hot or conditions of high altitude or low air pressure the ECU will raise this value You can see any change the ECU has made by checking this screen Ambient Acceleration This is a setting which deci...

Page 29: ...ch use invalidates your warranty Just order yourself a good high quality battery of the recommended type and use the wait for it to arrive by checking through your installation and these notes When it...

Page 30: ...channel on your receiver Connect the display to the Hub if using the Lite option To navigate through the menus the two left but tons move up and down the menus the two right buttons increase and decre...

Page 31: ...and receiver The opening screen should show as below Follow the steps shown to set your radio The correct adjustment of the throttle adjustment on the ECU can be verified in the second screen of the...

Page 32: ...ould be made to hold the engine A pair of sturdy timber rails securely fixed to a base board will suffice Use screws to hold together don t rely on a nailed assembly The engine can be secured to the r...

Page 33: ...noticed and dealt with IF START UP SEQUENCE IS NOT COMPLETED CHECK FOR FLAME INSIDE THE ENGINE If there is flame then set full throttle for over 3 seconds to engage the starter and blow out the flame...

Page 34: ...ed the RPM rises and the reading will change to FUEL RAMP In this phase the ignition system is switched off The fuel flow and starter power will be increased auto matically to increase the RPM quickly...

Page 35: ...and RPM The only thing the user can do is to abort the sequence by lowering the trim in the case that something abnormal excessive flames in the exhaust grinding noise etc If a problem is detected fi...

Page 36: ...The radio signal is valid no failsafe condition The readings of the RPM are consistent with a flameout condition the speed of the RPM coasting down is between preset limits The readings of the exhaus...

Page 37: ...rated quickly 4 If the engine restart is initiated while on approach evaluate if the speed position of the plane is still good for a safe landing if so land immediately you don t know why the engine s...

Page 38: ...stallations These curves are selected under the RADIO menu FULL EXPO Means thrust is linear to RPM it is the default setting Thrust develops exponentially and it is the recommended curve for high thru...

Page 39: ...ossible while a fast airframe with small intakes bypass installation will benefit of smaller exhaust diameter and smaller gap to get the maximum efflux speed Use an exhaust tube of a minimum diameter...

Page 40: ...ally at full rpms Hold throttle steady a few sec onds until it is finished 13 Stop Engine off 14 Cooling Starter is operating to cool the engine 15 GlowBad Defective or disconnected glow plug 16 Start...

Page 41: ...TelemetryX module it will be necessary to configure it to your radio brand Follow the instructions of the module except if you purchased the Compact version In this case to access to the telemetry mo...

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