Another bearing question....

Wayne Galligan wgalligan at goodsonacura.com
Wed Oct 22 13:08:00 AKDT 2003


My OS will do the loading up in the midrange and die thing.  It has happened
on the last two bearings thus giving me the warning.  Then of course I could
verify the end play at the tips of the prop. Funny thing was I couldn't feel
any roughness.  But after a fresh bearing it ran fine.

Wayne

----- Original Message ----- 
From: "White, Chris" <chris at ssd.fsi.com>
To: <discussion at nsrca.org>
Sent: Wednesday, October 22, 2003 2:55 PM
Subject: RE: Another bearing question....


> Thanks Wayne.... The first 2 I would expect, the 3rd is new to me, and the
> fourth....well that kind of says why we care....:)
> Chris
>
> -----Original Message-----
> From: Wayne Galligan [mailto:wgalligan at goodsonacura.com]
> Sent: Wednesday, October 22, 2003 2:47 PM
> To: discussion at nsrca.org
> Subject: Re: Another bearing question....
>
>
> If you rock the spinner back and forth and it is not smooth or you feel
> roughness.....bad bearing.   If you grab the prop by the tips and wiggle
it
> back and forth and there is end play.... bad bearing.  If you experience
> sudden changes in the midrange like loading up and engine quits on spool
up
> and plug is OK....possible bad bearing.
>
> Or if you see metal filings coming out the exhaust....... TOO LATE bad
> bearing and engine.
>
> Wayne G.
> ----- Original Message ----- 
> From: "White, Chris" <chris at ssd.fsi.com>
> To: <discussion at nsrca.org>
> Sent: Wednesday, October 22, 2003 2:32 PM
> Subject: Another bearing question....
>
>
> > Hi!
> > I hear of guys getting anywhere from 35 to 400 flights on bearings:
> >
> > What are the first signs of bearing problems. Since starting
Intermediate
> > practice in July, I have just got into flying the same airplane/engine
> > regularly enough to wear on an engine and tell the difference in
> > performance.  I have 97 flights on a Zen/Webra 145AAR combination. I use
> > Cool Power 15% and after run oil religiously.  I have a  tach which
varies
> > so much with light emissions that I deem it as unreliable.  So what do
you
> > look for?
> >
> >
> > Thanks, Chris
> >
> > -----Original Message-----
> > From: gene.maurice at comcast.net [mailto:gene.maurice at comcast.net]
> > Sent: Wednesday, October 22, 2003 2:07 PM
> > To: discussion at nsrca.org
> > Subject: RE: bearing question
> >
> >
> > Try WWW.AFCBEARING.COM. Great prices and so far a good product. They
carry
> > all of the standard sizes, but some of them have to be shipped from
Japan.
> I
> > am using their sealed SS bearing in my OS 160 with the seals and grease
> > intact. 120 flights (+-) without a problem. And I am using crank
pressure
> to
> > power a Perry pump. This is after going through 2 sets of carbon steel
> > bearings after less than 35 flights each.
> >
> > --
> > Gene Maurice
> > AMA 3408 NSRCA 877
> > Plano, TX
> > gene.maurice at comcast.net
> >
> > =====================================
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> >
> >
>
>
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>


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