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rjdaugh
Joined: 30 Aug 2006
Posts: 195
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 Posted: Sat Jun 27, 2009 1:02 pm Post subject: Missing Rotax 912S - A concern? |
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Just want to pass this onto you 912 and 912S drivers.
I was flying with a friend and after take off at an away airport, we were at about 400 ft and my 912S developed a little miss. Pulling the power back a bit stopped it, but when I went back to full power, there it was again. We went back down but couldn't duplicate it on the ground. Took off and again and at about 400 ft there it was again. We left it at that airport for a few days rather than fly home over the mountains.
A few days later, I replaced the plugs - It had been 220 hours any way - and they all looked good. I did notice that the cap on the bottom plug on the #2 cylinder was loose. I was hoping that that was it. A test flight showed no problem, so I flew it home.
A couple of weeks later, I was taking a friend up, and at about 400 ft above the ground there it was again. A real careful check showed the cap on the bottom plug on the #2 cylinder was real loose and the top cap, while not a loose as the bottom one, was looser than all the others.
I decided two new caps were in needed. They are like $55 each from Lockwood. Wow!
[img]cid:image001.jpg(at)01C9F737.E9D879B0[/img]
The picture is the old bottom cap with the rubber insulation cut off. It has a lot of wear making the hole elliptical.
I am hoping I have the problem solved. But have some questions:
Why the #2 cylinder?
Why both caps on this cylinder?
Has anyone else observed this problem?
Why would the cap wear like this?
Why are the spark plug caps for the 912S so expensive? The plugs for the 582 are more reasonable at a few bucks each. ???
Is there something weird with my installation that causes the vibration problem at that cylinder?
Randy - With shaken faith in my "bullet proof" 912S
Model 5/7 WarpDrive taper tip prop.
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_________________
Randy
Kitfox 5/7 912S
Black Hills, South Dakota |
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mlpaton2000(at)yahoo.com
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| Posted: Sun Jun 28, 2009 9:48 pm Post subject: Missing Rotax 912S - A concern? |
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Hi Randy
I crashed my plane but dont have any memory of it, folks on the ground said it was missing before i went down !!! I am now warry of the rotax 912 s .
michael
--- On Sat, 6/27/09, Randy Daughenbaugh <rjdaugh(at)rapidnet.com> wrote:
| Quote: |
From: Randy Daughenbaugh <rjdaugh(at)rapidnet.com>
Subject: Missing Rotax 912S - A concern?
To: kitfox-list(at)matronics.com
Date: Saturday, June 27, 2009, 1:59 PM
Just want to pass this onto you 912 and 912S drivers.
I was flying with a friend and after take off at an away airport, we were at about 400 ft and my 912S developed a little miss. Pulling the power back a bit stopped it, but when I went back to full power, there it was again. We went back down but couldn't duplicate it on the ground. Took off and again and at about 400 ft there it was again. We left it at that airport for a few days rather than fly home over the mountains.
A few days later, I replaced the plugs - It had been 220 hours any way - and they all looked good. I did notice that the cap on the bottom plug on the #2 cylinder was loose. I was hoping that that was it. A test flight showed no problem, so I flew it home.
A couple of weeks later, I was taking a friend up, and at about 400 ft above the ground there it was again. A real careful check showed the cap on the bottom plug on the #2 cylinder was real loose and the top cap, while not a loose as the bottom one, was looser than all the others.
I decided two new caps were in needed. They are like $55 each from Lockwood. Wow!
[img]cid:1.606773763(at)web54206.mail.re2.yahoo.com[/img]
The picture is the old bottom cap with the rubber insulation cut off. It has a lot of wear making the hole elliptical.
I am hoping I have the problem solved. But have some questions:
Why the #2 cylinder?
Why both caps on this cylinder?
Has anyone else observed this problem?
Why would the cap wear like this?
Why are the spark plug caps for the 912S so expensive? The plugs for the 582 are more reasonable at a few bucks each. ???
Is there something weird with my installation that causes the vibration problem at that cylinder?
Randy - With shaken faith in my "bullet proof" 912S
Model 5/7 WarpDrive taper tip prop.
|
| | - The Matronics Kitfox-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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akflyer
Joined: 07 May 2007
Posts: 574
Location: Soldotna AK
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| Posted: Mon Jun 29, 2009 8:44 am Post subject: Re: Missing Rotax 912S - A concern? |
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yep, if I went to the airport and found my engine missing it would be cause for concern.....and time to file a police report. May want to do a new W/B prior to being towed up too.. may be just a tad on the tail heavy side, but should thermal alot better 140#s lighter...
Sorry, I just couldn't pass it up.
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_________________
DO NOT ARCHIVE
Leonard Perry aka SNAKE
Soldotna AK
Avid "C" / Mk IV
582 (147 hrs and counting on the rebuild)
IVO IFA
Full Lotus 1450
#1 snake oil salesman since 1-22-2009
I would rather die trying to live, than to live trying not to die.... |
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