Another bearing question....

[Wayne Galligan]

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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