RE: Turbine quits at idle    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> RC Jets >> RE: Turbine quits at idle
Page: <<   < prev  1 2 [3]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Turbine quits at idle - 11/22/2012 11:03 AM   
BaldEagel



Posts: 9345
Score: 118
Joined: 10/12/2005
Last Login: 5/20/2013
From: Wychling, Kent, UNITED KINGDOM
Status: online 		Have you used any compressed air on the internal fuel lines to help clear any crud? as you said in your first post this turbine has not been used for a while.

Mike

_____________________________

No matter what anyone says 100% is the maximum you can get.

Hide Signatures

(in reply to siddus74)
       Post #: 51

RE: Turbine quits at idle - 11/22/2012 12:36 PM   
jefff


 

Posts: 54
Score: 100
Joined: 9/16/2003
Last Login: 5/21/2013
From: warren, OH, USA
Status: offline 		Check your pulses at trim low they should be in between 800-1000. trim up, full throttle 1900-2200, if not re-calibrate the tranismitter.

Hide Signatures

(in reply to BaldEagel)
       Post #: 52

RE: Turbine quits at idle - 11/22/2012 8:19 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Jeff

They have been check and are as per the recomended specs.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to jefff)
       Post #: 53

RE: Turbine quits at idle - 11/22/2012 8:25 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Mike

Not yet on the comppressed air, I don't have a compressor but I have a friend that does, I will be doing that most likely on Saturday, I like to do that after I do a night run to see the burning pattern before and after.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 54

RE: Turbine quits at idle - 11/22/2012 9:01 PM   
BaldEagel



Posts: 9345
Score: 118
Joined: 10/12/2005
Last Login: 5/20/2013
From: Wychling, Kent, UNITED KINGDOM
Status: online 		If you have a mig welder use the CO2 bottle.

Mike

_____________________________

No matter what anyone says 100% is the maximum you can get.

Hide Signatures

(in reply to CARS II)
       Post #: 55

RE: Turbine quits at idle - 11/22/2012 10:31 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		To all:

Happy thanks giving to those who celebrate and indeed is a happy day as we may have found the problem part.

I received a massage from Mr: Gaspar last night ( I have been in contact with him reg. the engine ) and after watching the last vid. he suggested that it was a fuel side problem and to concentrate on the electronic fuel valve and the pump and to bypass it on the next run.

A few minutes ago I did another run this time bypassing the fuel valve, the engine started about the same and got to the running mode just fine like before, on the run I waited for twice the time as when it was quiting, it keep running, this time with a stady idel, I reved it up to full RPMs twice and it came down to idel and stayed there steady.

Looks like we found the solution to this delema, I will have to do a few more runs, this time at the field to make sure that was the cause but it looks like it was the fuel selenoid failing.

After paying carefull attention to the last video one could see that the pump was working as programed at the FEDEC and the lack of white smoke when it stopped running made me think the pump was not at fault because the engine was starving from fuel at that point hence the lack of residual fuel ( white smoke ).

More later, I have to run to work


I like to thank all the participants in this thread and Mr: Gaspar for all the help ( hold your horses we are not done yet )

< Message edited by CARS II -- 11/23/2012 8:51 PM >

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to BaldEagel)
       Post #: 56

RE: Turbine quits at idle - 11/22/2012 10:48 PM   
BaldEagel



Posts: 9345
Score: 118
Joined: 10/12/2005
Last Login: 5/20/2013
From: Wychling, Kent, UNITED KINGDOM
Status: online 		Good job, Gaspar comes through as he always does on his bits, I must admit I am always impressed with the way he comes through for his customers.

Mike

_____________________________

No matter what anyone says 100% is the maximum you can get.

Hide Signatures

(in reply to CARS II)
       Post #: 57

RE: Turbine quits at idle - 11/22/2012 11:07 PM   
siddus74



Posts: 1056
Score: 100
Joined: 6/29/2004
Last Login: 5/18/2013
From: Nottingham, UNITED KINGDOM
Status: offline 		Good man, something to keep in mind ... hard to contemplate that a simple solinoid on off device can partially fail eh ... normally they just either work or not ...

Good job

Scott.


_____________________________

siddus74


Hide Signatures

(in reply to BaldEagel)
       Post #: 58

RE: Turbine quits at idle - 11/23/2012 12:04 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Yeap!
He is a great guy to work with

Mike
I'm still interested on clealring the fuel sprayers, a night run should give us a clue as to the health of the nozels.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to siddus74)
       Post #: 59

RE: Turbine quits at idle - 11/23/2012 1:06 AM   
Dr Honda



Posts: 1588
Score: 100
Joined: 4/4/2005
Last Login: 5/21/2013
From: Latrobe, PA, USA
Status: offline
quote:

ORIGINAL: CARS II

\
I'm still interested on clealring the fuel sprayers, a night run should give us a clue as to the health of the nozels.



Yep... it would. You will be able to see the fire better.


_____________________________

Tony
Owner of A&L Motorsports (formerly ARO Products) Manufacture of custom alloy parts.

Hide Signatures

(in reply to CARS II)
       Post #: 60

RE: Turbine quits at idle - 11/23/2012 1:39 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		I did find the other pump.

Back from work, on a day like today I only have to show my face for about an hour then I go home ( seniority ruels in the airline bussiness )

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to Dr Honda)
       Post #: 61

RE: Turbine quits at idle - 11/23/2012 2:01 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		I will post the last video with the bypassed fuel valve for anyone interested to see the run, I will also post probably two more vid showing a night run and a run at the field by this weekend.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 62

RE: Turbine quits at idle - 11/23/2012 3:03 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Here is the vid for today's run, I see some flactuations on the RPMs as it is running, more testing to come.

I keep metioning the fuel valve and show you the manual one only not the electric one, you get the idea

http://www.youtube.com/watch?v=8D74FtL-ue0

< Message edited by CARS II -- 11/23/2012 3:55 AM >

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 63

RE: Turbine quits at idle - 11/25/2012 5:39 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Ok

Like I said, we are not done yet

The problem persisted even without the selenoid been bypassed, I took the airplane to the flying field and ran it there two times, it did not improved, ok I said that's the way you wanted you got it body .

I took the engine and set it up on a engine runing stand that I build this afternoon ( my other one is gone ) to say the least on the stand it ran perfectly so, something ( I think ) is making the engine quit while it is in the airplane, maybe is wire related, anyhow, now I have somehing to work with.

Here are two videos, both were done a few minutes ago so both are night rans, very short ( it gets hot back there ) the second is showing the ran using the fuel selenoid and it did just fine.

Also starting is not an isue any more, is fine all the way up to running. check the burning patter ( nice hey!!! )

http://www.youtube.com/watch?v=0rczgbaEvqE

http://www.youtube.com/watch?v=lXsF_QVs6xw

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 64

RE: Turbine quits at idle - 11/25/2012 9:56 AM   
Karsten022


 

Posts: 31
Score: 100
Joined: 3/9/2007
Last Login: 5/20/2013
From: Hamburg, GERMANY
Status: offline
quote:

ORIGINAL: CARS II

I did find the other pump.

Back from work, on a day like today I only have to show my face for about an hour then I go home ( seniority ruels in the airline bussiness )



Hello,

I think the filter must be installed in the other direction. If the filter on the picture is installed on the pressure side of the pump (what is right) you have to turn it 180 degrees. The thick site must be installed near the pump.


Best regards,
Karsten

< Message edited by Karsten022 -- 11/25/2012 11:49 AM >

Hide Signatures

(in reply to CARS II)
       Post #: 65

RE: Turbine quits at idle - 11/25/2012 12:18 PM   
Dr Honda



Posts: 1588
Score: 100
Joined: 4/4/2005
Last Login: 5/21/2013
From: Latrobe, PA, USA
Status: offline 		The direction of the filter doesn't matter. Yes... it should be positioned so the outside surface of the filter sees the incoming fuel... but it's not critical. BUT... never turn it around after it's been put into use. You could send junk into the engine.

OK... I really didn't see/hear anything wrong with the vid from post #63. Most engines won't idle perfectly. They hunt. That's partly from the "Stability Delay" setting. I find when it's down around 50... they hunt. If it's up around 100... they hang. I think I have my little Wren 44 around 70. At that point... it will find it's RPM easy, without overshooting.

With that said... While watching the vids... I thought to myself... "The pump PW, and temp seems high for an idle." (Vid on post #63) Then... in the second vid in post #64 showed a normal PW and temp. The PW went from 133 to 71. AND... the temps went from 520 to 460. Because of this... I think you may have an air leak in the engine case. Was it significantly cooler when you ran the engine at night?


_____________________________

Tony
Owner of A&L Motorsports (formerly ARO Products) Manufacture of custom alloy parts.

Hide Signatures

(in reply to Karsten022)
       Post #: 66

RE: Turbine quits at idle - 11/25/2012 1:00 PM   
jefff


 

Posts: 54
Score: 100
Joined: 9/16/2003
Last Login: 5/21/2013
From: warren, OH, USA
Status: offline 		Gaspar has a computer program that can be used instead of your Data Terminal. This program can download the last 51 minutes of run time into notepad or Excel. It will give you Temp, RPM, Throttle and pump readings..Maybe this can help you in trouble shooting. I use it on my Fadec ECUs

Hide Signatures

(in reply to Dr Honda)
       Post #: 67

RE: Turbine quits at idle - 11/25/2012 1:05 PM   
BaldEagel



Posts: 9345
Score: 118
Joined: 10/12/2005
Last Login: 5/20/2013
From: Wychling, Kent, UNITED KINGDOM
Status: online
quote:

ORIGINAL: jefff

Gaspar has a computer program that can be used instead of your Data Terminal. This program can download the last 51 minutes of run time into notepad or Excel. It will give you Temp, RPM, Throttle and pump readings..Maybe this can help you in trouble shooting. I use it on my Fadec ECUs


You can download it from the JetsMunt web site, this is what I was referring to about ten posts back.

Mike

EDIT: Cricky it was fifty four post back on page one.

_____________________________

No matter what anyone says 100% is the maximum you can get.

Hide Signatures

(in reply to jefff)
       Post #: 68

RE: Turbine quits at idle - 11/25/2012 9:01 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Tony

The run on post # 64 was done with a diferent pump ( not new ) as you mentioned the PW is down to # 71 and temp is 460, big improvement.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to BaldEagel)
       Post #: 69

RE: Turbine quits at idle - 11/25/2012 9:21 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		Mike

I will take a look at that program.

Thanks

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 70

RE: Turbine quits at idle - 12/5/2012 9:58 PM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		I finally was able to run the engine successfully in the aircraft, everything is running the way it supposed to.

After all the testing and checking I came to the conclusion that ( with the help of everyone that got involved in the tread )

The fuel and gas solenoids needed to be moved to the front next to the FADEC to eliminate any glitches from extensions.

The UAT needed to be serviced.

Fuel pump needed to be change.

Took the opportunity to move the manual fuel valve to the front

I also checked the fuel can for contaminants ( both UAT and can are clean )


Thank you all for all the help and suggestions, RCU is one of the best resources we have.

Time to go flying

PS: Now I can go back building the Turbinator



Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


< Message edited by CARS II -- 12/6/2012 7:57 AM >

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to CARS II)
       Post #: 71

RE: Turbine quits at idle - 12/5/2012 11:52 PM   
Dr Honda



Posts: 1588
Score: 100
Joined: 4/4/2005
Last Login: 5/21/2013
From: Latrobe, PA, USA
Status: offline 		I never thought about picking up interference from the solenoid wires.

Good call.


_____________________________

Tony
Owner of A&L Motorsports (formerly ARO Products) Manufacture of custom alloy parts.

Hide Signatures

(in reply to CARS II)
       Post #: 72

RE: Turbine quits at idle - 12/6/2012 2:23 AM   
CARS II


 

Posts: 2703
Score: 110
Joined: 10/14/2002
Last Login: 5/21/2013
From: Daly City, CA, USA
Status: offline 		It looks that way, the pump was not working as it should, after changing it and still having almost the same situation I suspected the extensions.

_____________________________

CARS II
Go fly a Jet today.

Hide Signatures

(in reply to Dr Honda)
       Post #: 73

Page:   <<   < prev  1 2 [3]
All Forums >> RC Airplanes >> RC Jets >> RE: Turbine quits at idle
Page: <<   < prev  1 2 [3]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.657RCU1