Finn,

Thank you for responding to my question.  The wear measurements I make
indicate things are within specs.  I have decided to proceed with the
installation of an overhaul kit with new seals and am comfortable with that
decision thanks to your input.

Steve


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Finn Lassen
Sent: Monday, August 01, 2005 8:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Apex seal wear

It may take quite a while for "Tracy's" new seals to wear in. They wear
slower than the stock seals.
However, your wear looks quite minimal. How is the wear on the sides of
the seals (where they wear against the rotor groove), and how worn down
are they? If they are well within specs you might consider reusing them.

The only disadvantage of using new seals is it may take a while (100s of
hours?) to get perfect compression.
Mine is slowly, slowly improving, but then I had rather deep grooves in
the rotor housing edges (maybe 1/16" by 1/32").

Finn

sboese wrote:

>List members,
>
>I tore down my running 1986 NA 13B to check for wear as part of the final
>assembly of my RV-6A.  A picture of two apex seals is attached.  The total
>clearance between the apex seals with the ends touching is 0.006", 0.003"
>from each seal.  This is typical of all the apex seals.  The rotor housings
>appear to be worn on the edges to match the end portions of the apex seals
>and this is the only apparent wear to be seen on them.  Is this a normal
>wear pattern?  Will new seals (Tracy's new seals in particular) seat to the
>rotor housings?
>
>Thanks for any advice you may give.
>
>Steve Boese
>RV6A, 86NA13B, EC2, RD1A, Wyoming
>
>  
>


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