ceramic bearing

[mdarr00 at comcast.net]

Wayne,

I have used that bearing in my OS 140.  The ceramic balls do not rust, but
the nitro acts as an abrasive and wears the ceramic balls.  Once the balls
start to wear, they develop an abrasive finish which in turn wears the
bearing race, which will rust.  All of this together causes the bearing to
wear faster than a stock bearing.  The best bearing in my opinion is the one
that the guys on the list have been talking about, which is the OS fi
stainless bearing.

I know the ceramic sounds like a good idea, that is why I tried it.
Unfortunately it did not work out very good in our application.

Mike Darr


----- Original Message ----- 
From: "Wayne Galligan" <wgalligan at goodsonacura.com>
To: <discussion at nsrca.org>
Sent: Tuesday, July 06, 2004 6:56 PM
Subject: ceramic bearing


>       20x37x9 MR6904C-TH9/C3 -39 Ceramic Engine Bearing  $44.95
>
>
> I found this bearing in Boca's list of model engines that would fit the OS
> 1.40.   Has anyone used or any experience with this bearing.  I would
think
> ceramic is impervious to rust and high temps.
>
> Wayne Galligan
>
>
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