Mailing List flyrotary@lancaironline.net Message #39985
From: Steve Thomas <steve@stevet.net>
Subject: Re: [FlyRotary] Re: Rotary Enhancements
Date: Mon, 22 Oct 2007 19:46:41 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Not sure what you're looking at, but the coating is called "Cermet" not ceramic.  They also sell ceramic seals.  Cermet is a brand name for a particular kind of chrome plating, I believe.  

Best Regards,

Steve 
____________________________________________________________________


On Oct 22, 2007, at 1:09 PM, wrjjrs@aol.com wrote:

Guys,
The real question is, does the coating stay on?! There are many types of coatings, the toughest coating won't help if it cracks or flakes off.  Ceramic is one of the hardest materials around short of diamond. There is no question that it will help lower sliding friction, do they have any high time engines? This comes from someone who really likes coatings. If the coating flakes off the flakes themselves are the worse than anything you could put in there.
Bill Jepson

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