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acrojim7534(at)YAHOO.COM
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 Posted: Fri Jun 24, 2011 11:02 am Post subject: 914 turbo |
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For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed.If its not completely closed, you will not get full bost on takeoff.
Jim Brown
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rlborger(at)mac.com
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| Posted: Fri Jun 24, 2011 12:20 pm Post subject: 914 turbo |
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Jim,
Thanks! Another item to add to the preflight and annual check list.
Blue skies & tailwinds,
Bob Borger
Europa Kit #A221 N914XL, XS Tri-Gear, Intercooled 914, Airmaster C/S Prop
http://www.europaowners.org/forums/gallery2.php?g2_itemId=60232
http://www.biplaneforumgallery.com/index.php?cat=10046
Europa Flying!
3705 Lynchburg Dr.
Corinth, TX 76208
Home: 940-497-2123
Cel: 817-992-1117
On Jun 24, 2011, at 13:59, Jim Brown wrote:
| Quote: | For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed..If its not completely closed, you will not get full bost on takeoff.
Jim Brown
<P6230012.JPG><P6230013.JPG><P6230014.JPG> |
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garrys(at)tampabay.rr.com
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| Posted: Fri Jun 24, 2011 4:11 pm Post subject: 914 turbo |
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Jim, how often did you experience a stuck waste gate? Mine used to stick about once per year, and was a bugger to free up. Never did find a solution.
Garry
Sent from my iPad
On Jun 24, 2011, at 2:59 PM, Jim Brown <acrojim7534(at)yahoo.com (acrojim7534(at)yahoo.com)> wrote:
[quote]For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed..If its not completely closed, you will not get full bost on takeoff.
Jim Brown
<P6230012.JPG>
<P6230013.JPG>
<P6230014.JPG>
[b]
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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acrojim7534(at)YAHOO.COM
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| Posted: Sat Jun 25, 2011 2:45 am Post subject: 914 turbo |
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garry, this was the only time...I have used a product called Mouse Milk. Its a lubricant for turbines I think. However it is used in applications where heat is a problem. Its avaiable at Aircraft Spruce...I used it about every other month, just a squirt on the shaft that the clevis was attached to.
From: Garry Stout <garrys(at)tampabay.rr.com>
To: "europa-list(at)matronics.com" <europa-list(at)matronics.com>
Sent: Friday, June 24, 2011 8:08 PM
Subject: Re: 914 turbo
Jim, how often did you experience a stuck waste gate? Mine used to stick about once per year, and was a bugger to free up. Never did find a solution.
Garry
Sent from my iPad
On Jun 24, 2011, at 2:59 PM, Jim Brown <acrojim7534(at)yahoo.com (acrojim7534(at)yahoo.com)> wrote:
[quote] For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed..If its not completely closed, you will not get full bost on takeoff.
Jim Brown
<P6230012.JPG>
<P6230013.JPG>
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a-List
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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[b]
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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europaxs(at)gmail.com
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| Posted: Sat Jun 25, 2011 5:43 am Post subject: 914 turbo |
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Hi, we also had the same problem with a stuck waste gate. We tried Mouse Milk but would have the same problem after only a few flights.
Out solution was to remove the turbo and clean the shaft dry. I think that was Lockwood Aviation’s suggestion.
Keep the shaft dry and run motor gas. Any AVGAS will cause it to stick at random times as the lead builds up. We run motor gas as often as we can, but use TCP (I think that’s what it’s called) when we run AVGAS.
Before each flight I turn the master on and let the servo move the waste gate. Problem is I cannot see the servo or waste gate. What we figured out is that we can pull the engine computer breaker and push it back in and at the same time we quickly move in front of the place and look at the waste gate. You can see the arm move for just a brief second. This method works great and we have not had a stuck waste gate since.
Matt Carpenter
N138WJ
From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Jim Brown
Sent: Saturday, June 25, 2011 5:42 AM
To: europa-list(at)matronics.com
Subject: Re: 914 turbo
garry, this was the only time...I have used a product called Mouse Milk. Its a lubricant for turbines I think. However it is used in applications where heat is a problem. Its avaiable at Aircraft Spruce...I used it about every other month, just a squirt on the shaft that the clevis was attached to.
From: Garry Stout <garrys(at)tampabay.rr.com>
To: "europa-list(at)matronics.com" <europa-list(at)matronics.com>
Sent: Friday, June 24, 2011 8:08 PM
Subject: Re: 914 turbo
Jim, how often did you experience a stuck waste gate? Mine used to stick about once per year, and was a bugger to free up. Never did find a solution.
Garry
Sent from my iPad
On Jun 24, 2011, at 2:59 PM, Jim Brown <acrojim7534(at)yahoo.com (acrojim7534(at)yahoo.com)> wrote:
| Quote: |
For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed..If its not completely closed, you will not get full bost on takeoff.
Jim Brown
<P6230012.JPG>
<P6230013.JPG>
<P6230014.JPG>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Da-List3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
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0 | Quote: | | 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
1 | Quote: | | 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
2 | Quote: | | 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
3 | Quote: | | 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
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5 | Quote: | | 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D |
6
[quote][b]
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davidjoyce(at)doctors.org
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| Posted: Sat Jun 25, 2011 6:58 am Post subject: 914 turbo |
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Light oil on the bearing (or as near as you can get to it) without
dismantling the turbo has worked for me.
Regards, David Joyce, G-XSDJ
---
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acrojim7534(at)YAHOO.COM
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| Posted: Sat Jun 25, 2011 12:03 pm Post subject: 914 turbo |
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In my previous post about the turbo wastgate... The wastgate was NOT stuck...The problem was the controll cable had worn thru several strands of the cable. The cable was bending part of the time,when the throttle was moved,which made the MP change. This is why I posted the pictures.....
It would seem that my problem with the cable, brough forth a problem that has been ocurring, with the stuck wastgate on the 914's.
Jim Brown
From: Jim Brown <acrojim7534(at)yahoo.com>
To: Europa list <europa-list(at)matronics.com>
Sent: Friday, June 24, 2011 2:59 PM
Subject: 914 turbo
For you 914 drivers;
My 914 started showing surges in the manifold pressure recently. On takeoff's, the MP would vary from 33" MP to 39"MP. In cruse mode where I normall cruise at 33" MP and 5300 RPM I was having to advance the throttle, or retard, in order to keep the MP stable.
The engine has 860 hours, TT since new...to make a long story short, I have added 3 pictures of the servo cable..Over a period of time, some of the wires in the cable, were broken, or just worn out. The clevis on the end of the cable connects directly to the turbo wastgate, and the worn out cable was just bending, instead of moving the wastegate...
I ordered new cable from Rotax, and installed...Make sure when installing new cable, that the wastgate is completely closed..If its not completely closed, you will not get full bost on takeoff.
Jim Brown
[quote][b]
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