OS160FX crankshaft - Looking for one

[Xavier Mouraux]

Thanks Karl for the info. I was expecting a replacement parts for today but
it is back order until June 30th.

In other words, I am looking for a OS160FX crankshaft soon or I will have to
buy another engine. If anyone has one for sale, please contact me at
xavier.mouraux at sympatico.ca

Thanks

Xavier


----- Original Message ----- 
From: "Karl G. Mueller" <kgamueller at rogers.com>
To: <discussion at nsrca.org>
Sent: Monday, May 17, 2004 9:27 PM
Subject: Re: OS160FX crankshaft


> Xavier,
>
> Haven't seen one break on the 160. This used to be a problem in the
> old .60 FSR. We also used to break the crankpins on those. This could
> be from an inconsistency in the heat treating process, were one batch
> would have a slightly higher Rockwell-Hardness number than the norm.
> The inlet opening is the weakest point on the crankshaft and that is
usually
> one of the first places it will break, or the crank pin. If the engine has
> been back-firing a lot in the starting process that might cause this type
> of fracture as well.
>
> Karl G. Mueller
> kgamueller at rogers.com
>
> ----- Original Message ----- 
> From: "Xavier Mouraux" <xavier.mouraux at sympatico.ca>
> To: <discussion at nsrca.org>
> Sent: Monday, May 17, 2004 8:27 PM
> Subject: OS160FX crankshaft
>
>
> > Hello guys,
> >
> > When I started the OS160FX on my Hydeout on Sunday morning, it stopped
> right
> > away. While turning the prop by hand, I noticed it was really stiff. I
was
> > going to replace the bearings this week but I didn't expected it would
> > become that stiff all of a sudden. I removed the engine from the plane
and
> > opened the back plate but can't found anything wrong. I packed the
Hydeout
> > and took the other airplane out to practice.
> >
> > Once home, I dismantled the engine and was surprised to found the
problem.
> > The crankshaft is cracked radially from a corner of the inlet port to
> about
> > half way on the other side.
> >
> > The engine has been runnig very well since the beginning of the season
for
> > about 30 flights. It had approximatly 80 flights in another airplane in
> the
> > last 2 years. The engine is still under warranty so my hobbyshop will
try
> to
> > get it fixed.
> >
> > Anyone had seen that before ?
> >
> > Xavier
> >
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