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From: Dale Rogers <rogersda@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Engine damage thoughts
Date: Sat, 18 Dec 2004 20:19:17 -0500
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Rusty,

   I should have thought of what Lynn said, when I 
first posted.  Check with your FBO.  They'll almost 
certainly know of a shop that can analyze your oil 
(from the filter) for metallic contaminents.  Or 
call around to some big rig service centers.  Many 
truckers have the oil analyzed at every oil change.

Dale R.
COZY MkIV #1254
(& maker of aluminum chips and spirals)


> From: "Russell Duffy" <13brv3@bellsouth.net>
> Date: 2004/12/18 Sat PM 07:54:29 EST
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Engine damage thoughts
> 
> Cut the filter open. Nothing there? Probably nothing wrong.
> 
> Lynn E. Hanover
> 
>  
> Say, now there's an idea.  I have one of the Peterson filters, and took it
> apart already.  There were a few flakes of something black, but I think
> those are bits of hose from the last hoses I made.  I try to clean the hoses
> out, but figure the filter will catch whatever I miss.  I'm sure I can tell
> whether these flakes are rubber or metal.  What sort of material would you
> expect to see in the filter if the bearings got toasted (he says expecting
> to hear "black flakes")?  
>  
> Thanks to everyone for their opinions.  On the surface, it would seem safer
> to take it apart, but you have to realize that it was put together by Bruce
> Turrentine, and would now be put together by me as the first engine I've
> assembled.  Safer?  Not necessarily :-)  
>  
> If there's any doubt, I'll certainly take it apart.  The added benefit would
> be to install the new apex seals, and have the rotors ceramic coated.
> Primarily, I hesitate to do all this because it will delay the whole thing
> until after they get done with my hanger (whenever that may be).  I just
> don't want to have everything taken apart and spread around when they give
> me my one week notice to move out.   I think there's a reasonable chance I
> can get the plane flyable again before I get kicked out, assuming I don't
> take the engine apart, and the oil cooler re-fit goes well.  
>  
> Speaking of oil coolers, I forgot to comment on the pics Al posted.  Those
> look like something out of a TIG welding textbook.  Absolutely beautiful
> work.  My next cooler will either be built like a tank, or under no pressure
> at all.  
>  
> Cheers,
> Rusty (wings back on)