Rear bearing

[Del Rykert]

Lem..
    For what a bearing costs it is cheap insurance to replace. I will be
very surprised if you don't see some galling and may have even developed
some flat spots on bearings with bearing being so stiff from old castor.
Engine Guru and friend Dave Gierki always suggested to me to tear engine
down and clean thoroughly to be certain everything is up to snuff. I know
many don't recommend indiscriminate tearing down an engine but sometimes is
only way to prevent trashing engine from retainer or flakes coming off and
going through engine.
    Please keep us apprised of your progress.

                         del
               NSRCA - 473
----- Original Message ----- 
From: "Lem and Christina Stevens" <landcstevens at comcast.net>
To: <discussion at nsrca.org>
Sent: Saturday, May 22, 2004 5:14 PM
Subject: Re: Rear bearing


> I am getting about 10,100 rpm on the engine I just cleaned, and it runs
very
> rough in the mid range.  With the same header and pipe, I get about 10,700
> rpm on my other engine.  Both engines are OS 61 Hannos.  I am using an APC
> 12 x 12 pipe.
>
> Urs, the engine was frozen up with the castor, so that it would not turn.
> The carb barrel was also stuck.  It took three day soaking in fuel and
then
> a heat gun just to free the crankshaft so that it would turn.
>
> Del,  bearing is free now, but definitely can feel some rough spots.  From
> your description, it probably should be replaced.  Rough running and lower
> rpm.
>
> Lem
> ----- Original Message ----- 
> From: "Urs Baertschiger" <urs3 at hotmail.com>
> To: <discussion at nsrca.org>
> Sent: Saturday, May 22, 2004 3:38 PM
> Subject: Re: Rear bearing
>
>
> > Since you do not mention what engine you are working on almost anything
is
> > possible. I'd recommend you fly the engine till it has accumumulated at
> > least 1 hour of running time. Then you tell us what problems you have
> > encountered if any. Basically I wouldn't expect castor oil to affect
> > bearings even if the engine hasn't been used for some years.
> >
> > Urs
> > NSRCA 3069
> >
> >
> >
> >
> >
> > >From: "Lem and Christina Stevens" <landcstevens at comcast.net>
> > >Reply-To: discussion at nsrca.org
> > >To: <discussion at nsrca.org>
> > >Subject: Re: Rear bearing
> > >Date: Sat, 22 May 2004 11:45:02 -0500
> > >
> > >I am interested to learn what the symptoms are for a bad rear bearing.
I
> > >have an old engine that I am cleaning up.  It was run on castor oil and
> > >then
> > >sat since mid 1990s.  I have it running after much work, (I hate castor
> > >oil)
> > >but I wonder if the bearing is any good.
> > >
> > >Thanks,  Lem
> > >----- Original Message -----
> > >From: "Alan Schiaffino" <alan at schiaffino.org>
> > >To: <discussion at nsrca.org>
> > >Sent: Friday, May 21, 2004 8:12 PM
> > >Subject: YS-60
> > >
> > >
> > > > Well looks like I won't be able to make to Temple. Just lost a
bearing
> > >on
> > > > my engine while practicing for tomorrow. Does anybody have any
> > >experience
> > > > with this engine? Seems I go thru bearings pretty quick (~60
flights).
> > > > I've used Omega, CoolPower, PowerMaster 20/20, and always run the
> engine
> > > > on the rich side.
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