Heck, tearing down my engine seems to be a routine event as of late <sigh>

That was my understanding too....about being nicer to the housings.

I was just wondering about what I don't know or what could be expanded on.

Like Dave said, minding parameters is the proper course but I would like to have as clear an understanding as possible for my own edification.

________________________________________
From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Ernest Christley [echristley@att.net]
Sent: Tuesday, February 15, 2011 10:37 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Ceramic Apex Seals....curiosity REceramin/carbon/steelst

Chris Barber wrote:
> Since I am likely about to replace my apex seals, at least in my rear
> rotor, I was surfing around the net looking at options regarding apex
> seals, O-rings, gaskets etc.  The reality is, I will probably use
> Tracy's seals, however, while on Mazdatrix looking at stuff, I once
> again noticed the ceramic apex seals available there and their $300.00
> price for EACH one, thus costing $1800.00 for a set. YIKES.  I am pretty
> certain we have all looked at these and wondered about them.  Personally
> I pretty much dismissed them as not enough of a balance for what ya
> get.  Then I realized that I am not really certain what that $1800 buys.
>
>

The argument I've heard for the ceramic seals is that they are nicer to the chrome surface of the rotor housing.  My
answer to that is at 100hrs/yr, how long do you seriously expect to run the engine before a teardown?  Ten years will be
1,000 hrs, and the cheap seals have proven to be more than adequate for that.  Do you really want to run for more than
10yrs without cracking the image open?

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