JetJoe JJ-1400 Start-Up Problems
08-22-2009 | 11:55 PM
#1
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From: Manchester,
MO
JetJoe JJ-1400 Start-Up Problems
Help! I bought a JJ-1400 as a side project. I have it setup on a test bench and receive an error when performing the following steps:
1. Fill Tank with Kerosene & 5% Aeroshell 500 Turbine Oil.
2. Fill Starter Gas tank with Powermax.
3. Turn on Transmitter.
4. Turn on Receiver & ECU.
5. Advance Throttle Trim to Full UP.
6. Green light is displayed on ECU.
7. Advance Throttle Stick to Full UP and then Full DOWN to begin start sequence.
8. The fuel pump starts for about seconds. (Fuel line is filled with fuel)
9. GSU handheld shows glow plug test. (Passed)
10. GSU displays the error (BadStart).
Nothing else happens. No action from the starter motor, fuel or gas solenoids.
Any ideas?
FYI - This is the JJ-1400 full auto start with flightworks fuel pump.
1. Fill Tank with Kerosene & 5% Aeroshell 500 Turbine Oil.
2. Fill Starter Gas tank with Powermax.
3. Turn on Transmitter.
4. Turn on Receiver & ECU.
5. Advance Throttle Trim to Full UP.
6. Green light is displayed on ECU.
7. Advance Throttle Stick to Full UP and then Full DOWN to begin start sequence.
8. The fuel pump starts for about seconds. (Fuel line is filled with fuel)
9. GSU handheld shows glow plug test. (Passed)
10. GSU displays the error (BadStart).
Nothing else happens. No action from the starter motor, fuel or gas solenoids.
Any ideas?
FYI - This is the JJ-1400 full auto start with flightworks fuel pump.
08-23-2009 | 01:30 AM
#2
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From: Mt. Vernon, IL
RE: JetJoe JJ-1400 Start-Up Problems
Sounds like the ECU is defective or something is not hooked up right. The fuel pump should not run in the beginning of the start sequence. Are you sure the starter and pump wires aren't reversed?
08-23-2009 | 01:31 AM
#3
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RE: JetJoe JJ-1400 Start-Up Problems
Sir:
Post a pic of your wiring that shows the connections to the ECU as well as the pump and starter, you sequence of events does not sound right, also when you state that you are filling the fuel tank with kerosene an then 5% oil, I assume your oil and fuel where previously mixed in the correct ratio, right?
Post a pic of your wiring that shows the connections to the ECU as well as the pump and starter, you sequence of events does not sound right, also when you state that you are filling the fuel tank with kerosene an then 5% oil, I assume your oil and fuel where previously mixed in the correct ratio, right?
08-23-2009 | 03:19 AM
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From: sint-maartensdijk, NETHERLANDS
RE: JetJoe JJ-1400 Start-Up Problems
Just check the following things: spin the compressor wheel by hand and look on the display if you read rpm .
Look at the egt on your displayand check if you read themperture.
If all these this work , it has to start , but i think you connect or the rpm sensor or egt wrong in the ecu , it can happen.
Just check this and let me know.
Best regards,
Martin
Look at the egt on your displayand check if you read themperture.
If all these this work , it has to start , but i think you connect or the rpm sensor or egt wrong in the ecu , it can happen.
Just check this and let me know.
Best regards,
Martin
08-23-2009 | 03:30 AM
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From: sint-maartensdijk, NETHERLANDS
RE: JetJoe JJ-1400 Start-Up Problems
just thought of an other problem.
Just check your solenoids from gas and feul, i think you switch them, there is no gas in the engine ,else you heard a plop
Just check your solenoids from gas and feul, i think you switch them, there is no gas in the engine ,else you heard a plop
08-23-2009 | 05:28 AM
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From: Ingham, , AUSTRALIA
RE: JetJoe JJ-1400 Start-Up Problems
I'm also guessing you have the fuel and gas solenoids plugged into the other. Try swapping where they plug into the ecu and give it a start.
Please let us know the outcome.
Please let us know the outcome.
08-23-2009 | 09:01 AM
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From: Manchester,
MO
RE: JetJoe JJ-1400 Start-Up Problems
I uploaded photos to the original post. I triple checked that I have the following connections correct on the Regal ECU:
Fuel Solenoid > Fuel Port on ECU (Per instructions, plug orientation does not matter)
Gas Solenoid > Gas Port on ECU (Per instructions, plug orientation does not matter)
Thermocouple > Thermocouple Port on ECU (Red to Red, Blue to Blue)
Fuel Pump > Fuel Pump wires on ECU
Starter > Starter wires on ECU
Glow Plug > Glow Plug wires on ECU
Battery > Battery wires on ECU
Throttle > Channel 3 (Reversed) on Futaba Receiver
Receiver Battery > Battery Port on Futaba Receiver
I purchase this from another user on Ebay and have had troubles getting started. Two weeks ago, I had everything setup and the ECU fried. Turned out I had the JR type throttle lead plugged into the futaba receiver with the wrong orientation (polarity reversed). I ordered a new ECU. This new ECU has allowed me to align the transmitter and partially begin the start sequence. I can only:
Test the Glow Plug
Prime the Engine
Hope this helps!
Fuel Solenoid > Fuel Port on ECU (Per instructions, plug orientation does not matter)
Gas Solenoid > Gas Port on ECU (Per instructions, plug orientation does not matter)
Thermocouple > Thermocouple Port on ECU (Red to Red, Blue to Blue)
Fuel Pump > Fuel Pump wires on ECU
Starter > Starter wires on ECU
Glow Plug > Glow Plug wires on ECU
Battery > Battery wires on ECU
Throttle > Channel 3 (Reversed) on Futaba Receiver
Receiver Battery > Battery Port on Futaba Receiver
I purchase this from another user on Ebay and have had troubles getting started. Two weeks ago, I had everything setup and the ECU fried. Turned out I had the JR type throttle lead plugged into the futaba receiver with the wrong orientation (polarity reversed). I ordered a new ECU. This new ECU has allowed me to align the transmitter and partially begin the start sequence. I can only:
Test the Glow Plug
Prime the Engine
Hope this helps!
08-23-2009 | 10:08 AM
#10
My Feedback: (23)
RE: JetJoe JJ-1400 Start-Up Problems
ORIGINAL: chw757s6640
I uploaded photos to the original post. I triple checked that I have the following connections correct on the Regal ECU:
Fuel Solenoid > Fuel Port on ECU (Per instructions, plug orientation does not matter)
Gas Solenoid > Gas Port on ECU (Per instructions, plug orientation does not matter)
Thermocouple > Thermocouple Port on ECU (Red to Red, Blue to Blue)
Fuel Pump > Fuel Pump wires on ECU
Starter > Starter wires on ECU
Glow Plug > Glow Plug wires on ECU
Battery > Battery wires on ECU
Throttle > Channel 3 (Reversed) on Futaba Receiver
Receiver Battery > Battery Port on Futaba Receiver
I purchase this from another user on Ebay and have had troubles getting started. Two weeks ago, I had everything setup and the ECU fried. Turned out I had the JR type throttle lead plugged into the futaba receiver with the wrong orientation (polarity reversed). I ordered a new ECU. This new ECU has allowed me to align the transmitter and partially begin the start sequence. I can only:
Test the Glow Plug
Prime the Engine
Hope this helps!
I uploaded photos to the original post. I triple checked that I have the following connections correct on the Regal ECU:
Fuel Solenoid > Fuel Port on ECU (Per instructions, plug orientation does not matter)
Gas Solenoid > Gas Port on ECU (Per instructions, plug orientation does not matter)
Thermocouple > Thermocouple Port on ECU (Red to Red, Blue to Blue)
Fuel Pump > Fuel Pump wires on ECU
Starter > Starter wires on ECU
Glow Plug > Glow Plug wires on ECU
Battery > Battery wires on ECU
Throttle > Channel 3 (Reversed) on Futaba Receiver
Receiver Battery > Battery Port on Futaba Receiver
I purchase this from another user on Ebay and have had troubles getting started. Two weeks ago, I had everything setup and the ECU fried. Turned out I had the JR type throttle lead plugged into the futaba receiver with the wrong orientation (polarity reversed). I ordered a new ECU. This new ECU has allowed me to align the transmitter and partially begin the start sequence. I can only:
Test the Glow Plug
Prime the Engine
Hope this helps!
Just to double check to see if the ecu markings are infact correct. I would try swapping the glow and starter wires to see if that fixes the issue.
08-23-2009 | 11:33 AM
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From: Manchester,
MO
RE: JetJoe JJ-1400 Start-Up Problems
I checked the ECU connections and they are good. When I manually spin the turbine, RPMs register on the handheld unit. When I apply hot air to the end of the thermocoupler, the increase in degrees is also registered on the handheld unit. The turbine spins freely with no significant issues. I removed the starter motor and attached a battery source and the motor ran at a high speed. I re-assembled the starter and tried another start. The fuel pump comes on for a few seconds and then the starter motor begins to spin very slowly and appears to strain the electic motor. At this point, it stops and the display either says "BadStart" or "Low Batt". The battery is a new LIPO, fully charged. Note - I did not have the propane tank full of powermax when I tried this!
Chris
Chris
08-23-2009 | 02:14 PM
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From: Manchester,
MO
RE: JetJoe JJ-1400 Start-Up Problems
The ECU glowplug and starter wires are color coded and reverse plugged so that it is impossibe to switch them without cutting and re-soldering plugs. Since the "priming" process works and responds appropriately, I think it is something else.
08-23-2009 | 03:41 PM
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From: , NM
RE: JetJoe JJ-1400 Start-Up Problems
check that the starter motor is good. I had a brush break at 18000 . made a fireball. I run a small deans and can hook to battery. I acted the same as yours till I replaced the starter. ecu could have a problem but check the motor first.
08-23-2009 | 07:24 PM
#19
My Feedback: (29)
RE: JetJoe JJ-1400 Start-Up Problems
Chris:
I think what has everyone confused is that you state that your priming is working fine (you go full throtle for I believe four seconds and the pump will run for one second) leading everyone to think that the pump wiring is correct, but then you state that during the first few seconds after commanding a starting sequence the pump runs, if that is the case and your ECU is set-up and wired correctly then it is defective, please validate that the pump is actually running after you trigger a starting sequence. If you find out that the pump is not really running as you stated before, then you should be OK on the pump, next step is to check the starter power parameters, do you know how to get into the programming menu of the ECU?
Let me know
I think what has everyone confused is that you state that your priming is working fine (you go full throtle for I believe four seconds and the pump will run for one second) leading everyone to think that the pump wiring is correct, but then you state that during the first few seconds after commanding a starting sequence the pump runs, if that is the case and your ECU is set-up and wired correctly then it is defective, please validate that the pump is actually running after you trigger a starting sequence. If you find out that the pump is not really running as you stated before, then you should be OK on the pump, next step is to check the starter power parameters, do you know how to get into the programming menu of the ECU?
Let me know
08-23-2009 | 07:33 PM
#20
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From: Manchester,
MO
RE: JetJoe JJ-1400 Start-Up Problems
Here is what happens:
1. I trigger the start sequence.
2. I hear a high pitch tone for 1-2 seconds.
3. The starter motor and the fuel pump simultaneously turn on for about 3-4 seconds. During this 3-4 seconds, the starter is turning the turbine wheel very slowly.
4. Everything stops and the handheld GSU displays "BadStart".
Hope this helps clarify things!
1. I trigger the start sequence.
2. I hear a high pitch tone for 1-2 seconds.
3. The starter motor and the fuel pump simultaneously turn on for about 3-4 seconds. During this 3-4 seconds, the starter is turning the turbine wheel very slowly.
4. Everything stops and the handheld GSU displays "BadStart".
Hope this helps clarify things!
08-23-2009 | 08:19 PM
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From: Heath,
TX
RE: JetJoe JJ-1400 Start-Up Problems
I dont understand why the pump is running at the start sequence, that is not right.
Can you switch out those lipos with a nicad pack and see what happens?
You should be well into the start sequence and the motor up to temp before the pump should even begin running.
Can you switch out those lipos with a nicad pack and see what happens?
You should be well into the start sequence and the motor up to temp before the pump should even begin running.
08-23-2009 | 09:25 PM
#23
My Feedback: (29)
RE: JetJoe JJ-1400 Start-Up Problems
Chris:
Open up the shrink tubing on the starter/pump connector that goes into the ECU, if possible post a pic of the connections after you remove the covering, the behavior you describe seems like a short circuit between the pump and the starter, do not try any more starts until you check the connections to be correct to your ECU connection labels, you could burn out the mosfets on the pump/starter speed controls
Open up the shrink tubing on the starter/pump connector that goes into the ECU, if possible post a pic of the connections after you remove the covering, the behavior you describe seems like a short circuit between the pump and the starter, do not try any more starts until you check the connections to be correct to your ECU connection labels, you could burn out the mosfets on the pump/starter speed controls
08-23-2009 | 09:47 PM
#25
My Feedback: (29)
RE: JetJoe JJ-1400 Start-Up Problems
Chris:
OK, now stop for a minute to do some checking, first, is the ECU you bought exactly the same as the one that burned? I see that the ECU you have is not the same as the previous ver sion from JJ, also, thelebeling is different did you get a new wiring harness with this new ECU? if you did get a new harness, did you solder it yourself? was the turbine ever run with the old ECU?
OK, now stop for a minute to do some checking, first, is the ECU you bought exactly the same as the one that burned? I see that the ECU you have is not the same as the previous ver sion from JJ, also, thelebeling is different did you get a new wiring harness with this new ECU? if you did get a new harness, did you solder it yourself? was the turbine ever run with the old ECU?
