Mailing List flyrotary@lancaironline.net Message #30160
From: Russell Duffy <russell.duffy@gmail.com>
Subject: RE: [FlyRotary] Re: Another rotary failure
Date: Mon, 13 Feb 2006 15:34:59 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
Mazda's new 2mm seal design is 2 piece (introduced in 2004 I think), the 3 piece is obsolete.   It is quite possible that Chuck got his prior to the new Mazda design so he could have the aftermarket parts.   RWS does not furnish seals to Mazdatrix so guess they would have to be Hurley or Atkins  (same material AFIK).   
 
Hi Tracy,
 
Hopefully Chuck can clear this up for us, as well as providing many more answers once he gets into the engine.  I would probably be more suspicious of the "aftermarket" seals than the stock ones, mostly because we don't know where they came from, or should I say we know where they didn't come from :-)   
 
Does Chuck run the oil injection pump, or pre-mix?  Losing oil flow to one rotor would eventually lead to loss of compression, though I don't think it would happen that suddenly.   
 
In trying to think of recent problems,  the only one I can recall that didn't have a very clear cause was Ed's tailwind to Shady Bend issue.  I recall there was a theory of ingesting something, but it was never proven.  Other than that, Paul's accident wasn't absolutely proven, but I don't think anyone blames the engine itself.  Any others? 
 
Again, the lack of unexplainable "engine" failures is good news, but that fact is hidden under a bunch of "engine installation" failures (ahem, like mine).  
 
Rusty (RV-8 QB delivery finally being arranged)
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