RE: Flame Out Titan SE  
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RE: Flame Out Titan SE - 5/13/2008 7:06:19 PM   
ravill



Posts: 1915
Joined: 1/24/2003
From: Redwood, CA, USA
Status: offline 		Dom,

Oh wait, I see the problem, you have the F-word in your jet!!

J/k man, I hope you find the problem so that you can fly the crapolla outta your jet!

Maybe if you move your ECU here?

Raf

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       Post #: 51

RE: Flame Out Titan SE - 5/13/2008 8:01:21 PM   
MaJ. Woody


 

Posts: 1168
Joined: 4/4/2003
From: Rochester, NY, USA
Status: offline 		Thanks for the help guys. I will have her back in the air soon and will post my results. I just spoke to Bob Wilcox and he said I have nothing to worry about with my RX/ECU so close since I am on 2.4Ghz. Like all my jets where the two are so close I never had a glitch.


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Dom
Team FeiBao

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       Post #: 52

RE: Flame Out Titan SE - 5/14/2008 2:39:34 PM   
pilott28


 

Posts: 844
Joined: 12/24/2002
From: Jacksonville, FL, USA
Status: offline 		I guess I will ask again ....

why doesn't the ECU come with a failsafe time delay that allows for transient voltage fluctuations without shutting down the turbine? There is a delay built in for loss of signal, why not for fluctuation in voltage?

It would seem logical that you could chase sources of transient electrical interference till the cows came home and not necessarily find and control every single one of them, but with a small adjustment to the ECU programming, it would all become unnecessary?

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Keith Sievers

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       Post #: 53

RE: Flame Out Titan SE - 5/14/2008 2:46:37 PM   
KC36330


 

Posts: 2515
Joined: 4/19/2006
From: Enterprise, AL, USA
Status: offline
quote:

ORIGINAL: pilott28

I guess I will ask again ....

why doesn't the ECU come with a failsafe time delay that allows for transient voltage fluctuations without shutting down the turbine? There is a delay built in for loss of signal, why not for fluctuation in voltage?


that would be like having a light that is Supposed to turn on when the battery is dead that runs off the same battery it monitors.

(in reply to pilott28)
       Post #: 54

RE: Flame Out Titan SE - 5/14/2008 7:37:19 PM   
pilott28


 

Posts: 844
Joined: 12/24/2002
From: Jacksonville, FL, USA
Status: offline
quote:

ORIGINAL: KC36330


quote:

ORIGINAL: pilott28

I guess I will ask again ....

why doesn't the ECU come with a failsafe time delay that allows for transient voltage fluctuations without shutting down the turbine? There is a delay built in for loss of signal, why not for fluctuation in voltage?


that would be like having a light that is Supposed to turn on when the battery is dead that runs off the same battery it monitors.


I am busy PMing with Matt on this. My understanding is that the ECU can draw power from both the Receiver and ECU battery ... so my comment was based upon the assumption that there is a redundant power source. This is what I am trying to confirm with him.

If in fact, the powerfail message results from any uncommanded abend of the ECU processor that is not specifically related to a condition like voltage drop or there is no redundant power capability, I would agree that the only option is chase all the gremlins that could potentially cause the processor to fail in some way.

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Keith Sievers

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       Post #: 55

RE: Flame Out Titan SE - 5/14/2008 8:43:52 PM   
c/f


 

Posts: 558
Joined: 1/30/2002
From: evansville, IN, USA
Status: offline 		Wow what a nightmare problem to resovle......

Perhaps one of these would set the record straight once airborne. http://www.eagletreesystems.com/MicroPower/micro.htm

If you have close quarters to wire I always use twisted pair wires, you can twist even the flat wire by seperating ribbon.

I also use carbon fibre to my advantage, you can enclose a ECU in a case of c/f, or you can use carbon tubing as a conduit when passing near items that are said to be taboo, adding static fluids and grounding wire during refueling is pretty exotic solution to have to swallow. Would this be a HOT fuel hazard if such potentials exist?

Good luck Dom,

(in reply to pilott28)
       Post #: 56

RE: Flame Out Titan SE - 5/16/2008 10:31:27 PM   
MaJ. Woody


 

Posts: 1168
Joined: 4/4/2003
From: Rochester, NY, USA
Status: offline 		Well I put three more flights on the Panther today without incident. The turbine ran great and checking the ECU after each flight showed zero failsafes every time!! Thanks for all the help. Let's hope this issue is resolved.

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Dom
Team FeiBao

(in reply to c/f)
       Post #: 57

RE: Flame Out Titan SE - 5/16/2008 11:14:31 PM   
Vincent



Posts: 2591
Joined: 12/7/2001
From: Phoenix, AZ, USA
Status: offline 		Good news Dom, btw...can you list the changes you made??
Thanks,
V..

(in reply to MaJ. Woody)
       Post #: 58

RE: Flame Out Titan SE - 7/21/2008 7:31:00 PM   
marito100


 

Posts: 37
Joined: 4/30/2004
From: Porto, PORTUGAL
Status: offline 		Hi.
We use to instal en EMCOTEC or POWERBOX bord with two lipo's at our jets. This devices menage Rx power very well and maybe avoid the troubles you are getting. We have never had such an issue.
Hope this helps.

Marito

(in reply to Vincent)
       Post #: 59

RE: Flame Out Titan SE - 7/21/2008 7:37:01 PM   
ravill



Posts: 1915
Joined: 1/24/2003
From: Redwood, CA, USA
Status: offline 		If you haven't had a flame out yet, then your probably not flying enough!

J/k I hope that we can all fly for the rest of our lives w/o having any flame outs to complicate our flying.

Raf

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RE: Flame Out Titan SE - 7/21/2008 10:06:31 PM   
MaJ. Woody


 

Posts: 1168
Joined: 4/4/2003
From: Rochester, NY, USA
Status: offline 		35 flights on my Panther now with the Titan SE and the problem has not shown up again. Just flight #4.


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Dom
Team FeiBao

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       Post #: 61

RE: Flame Out Titan SE - 7/21/2008 11:50:55 PM   
Vincent



Posts: 2591
Joined: 12/7/2001
From: Phoenix, AZ, USA
Status: offline 		Dom,
What changes did you make ??
V..

(in reply to MaJ. Woody)
       Post #: 62

RE: Flame Out Titan SE - 7/22/2008 4:58:14 AM   
gooseF22


 

Posts: 637
Joined: 8/12/2006
From: Fort Wayne, IN, USA
Status: offline 		One thing not mentioned is something that fromeco posted and happened to me. When you get new deans plugs, they are usually soldered with flux, and that flux can get down in the contacts and cause no contact on the contact faces. anytime you have a power issue and there are deans, clean the contacts both male and female with alcohol, and scratch the surfaces with a small screwdriver. I have now seen this about 5 or 6 times on various people's stuff. I have also seen issues with the plug lubricant that was being sold at toledo, it works smooth, but it does have some insulating properties. best to have em clean and dry.

I dont know if that applies to this case, but it is a good thing in the bag of tricks, and it is hard as hell to trace because its intermittent.

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Goose
Team Fromeco

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       Post #: 63

RE: Flame Out Titan SE - 7/22/2008 5:50:06 AM   
pilott28


 

Posts: 844
Joined: 12/24/2002
From: Jacksonville, FL, USA
Status: offline
quote:

ORIGINAL: MaJ. Woody

35 flights on my Panther now with the Titan SE and the problem has not shown up again. Just flight #4.



Since this thread has picked up again, I'll relate my research on the "power fail" message.

Essentially, what causes it is any event that leads to an ECU reboot. When the engine starts normally, the ECU sets a flag in memory that says "engine running". Normal shutdowns cause the flag to be reset to "stopped". This is the condition the ECU expects to see when it first wakes up and comes on line.

When the ECU comes on line after an abnormal shutdown, it sees the flag set to "engine running" rather than the usual "stopped", and it realizes at that point that it was interrupted and reset. After the "oh crap" that goes through its electronic brain, it displays the "power fail" message.

Dom, I had the same problem as you had on a cold, dry day and am pretty sure static electricity caused a spike that forced the ECU into an abend and reset. Never had a problem before or since. If an ECU or Receiver power problem causes the ECU to reset, the "power fail" message would also result.

I asked about building in a delay, but when the ECU goes off line, the fuel solenoid always closes as a safety precaution. Building a firmware solution to introduce the delay would probably be a bit of an engineering challenge, even if power may still be available from either the receiver or ECU battery. Thanks to Bob Wilcox for taking the time to explain all this to me.

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Keith Sievers

(in reply to MaJ. Woody)