Webra SS rear bearing

[Lance Van Nostrand]

I also would like to read Jerry's response.  The Bully/Webras are good
engines but the bearings are the weakest link in my opinion.  A few years
ago the 145 was my competition engine and the 120 before that.  I have owned
3 and ran them all to the point of exhaustion. I've tried the factory
bearings and other brands from Purvis bearing company (they have many
different brands in stock) and never got more than 50 flights on a steel
liner.  The newer AAC liner is better (the steel liners would rust and foul
the bearings).  I don't have good numbers on the AAC sleeved engines because
I moved to the OS140 then the Mintor 170 and have more than one reason to
stay converted.  On bearings, I have over 150 flights on the factory Mintor
bearings and they are still going strong.

--Lance

----- Original Message ----- 
From: "Keith Black" <tkeithb at comcast.net>
To: <discussion at nsrca.org>
Sent: Tuesday, April 27, 2004 11:34 AM
Subject: Re: Webra SS rear bearing


> OK Jerry, with a comment like that you're going to get a follow-up
question
> from someone! ;-)
>
> What exactly do you consider "reasonable care"? I've been flying
> Webras/Bullys (1.45) for the last year and have about 180 flights split
> between three different engines (most on the primary engine) and I have
yet
> to get more than about 50-60 flights before needing to change bearings,
> sometimes as few as 30. In fact on one brand new engine the bearings
> disentigrated and shrapneled the engine after about 30 flights, and I used
> after-run oil on every flight and ran it fairly rich (thanks to Horizon
for
> replacing the engine).
>
> I've tried using after-run oil, not using after-run oil, I always running
it
> dry, and as far as I can tell there's not much difference.
>
> I've noticed is that sometimes they start running poorly due to the
bearings
> becoming loose, in other words if you grab the prop tips and wiggle it
front
> to back there will be movement. When this gets too bad the engine won't
run
> as reliably (won't hold a low idle, mid to high transision gets bad,
etc.).
> In this case when I examine the bearings there may be some rust on the
> outside bearing case, but mainly it's just discolored due to running.
>
> Don't get me wrong, I've been an advocate of the Webra/Bully engines. Once
> broken in and the bearings are in good shape they run great (especially
for
> the price). I just can't seem to get the bearings to last.
>
> Thanks,
> Keith Black
>
> ----- Original Message ----- 
> From: "Jerry Budd" <jbudd at QNET.COM>
> To: <discussion at nsrca.org>
> Sent: Tuesday, April 27, 2004 10:25 AM
> Subject: RE: Webra SS rear bearing
>
>
> > I looked all over for a SS rear bearing for the Webra 145/160 and
> > have come to the conclusion that nobody makes one in that size.  The
> > good news is that given reasonable care the Webra bearings tend to
> > last quite a while (much longer than the OS).
> >
> > Thx, Jerry
> >

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