romeo.victor(at)t-online. Guest
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Posted: Mon Oct 18, 2010 8:22 am Post subject: AW: Oil Cooler Mount Cracking... |
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Hi Dick,
I am here in Germany but as well would like to know what you guys are discussing. May I call you as well or can you place some words in the net?
Best Regards
Stephan Servatius
2nd RV8
Von: owner-rv8-list-server(at)matronics.com [mailto:owner-rv8-list-server(at)matronics.com] Im Auftrag von Richard Martin
Gesendet: Montag, 18. Oktober 2010 15:43
An: rv8-list(at)matronics.com
Betreff: Re: Oil Cooler Mount Cracking...
Mat, call me (at)920 619 6968. I experienced the same problem 2500 hours ago when I first flew my RV8 (serial no. 2). I can explain in detail how and what to do.
Dick Martin
RV8 N233M
the fast one
On Sun, Oct 17, 2010 at 9:10 PM, Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)> wrote:
Dear Listers,
I took the cowling off the 'ol RV-8 today to have a look around at about the 112 TTSN hour mark. Most everything looked okay except for one major issue. The outside, lower back mount on the oil cooler is totally cracked off. The outside, lower front mount also has a long crack. At this point, the upper part of the mount seems alright. Also the inside mounts show no signs of cracks. The rear flange on the baffling has a small crack where the left rear part rivets to the back baffle that the oil cooler is bolted to. No oil leaks of any kind at this point. See attached pictures from my Cell Phone.
So what the heck? The engine shakes quite a bit on startup and shutdown (smooth as glass during normal ops), but this doesn't really seem like rotational shake damage. Although, it must be. Obviously I'm going to have to remove the oil cooler and have it repaired (that can be done, right?). But just "fixing" the mounting flanges isn't going to solve the "problem".
What are lister's opinion on what's going on here and what could be done to prevent it?
Interestingly, I noted that the #4 grounding cable that is attached to a bolt hole right underneath the oil cooler also had the lug sheered off. There is "service loop" on the cable, but #4 isn't really flexible so its not particular effective. Guess I need more. The point though, is, that it seems like the engine shook pretty hard. I don't see any other signs of "issues" related. The mounts and bolts seem solid and tight.
Thoughts?
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Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Blog
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 112+ Hours TTSN!
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