Glow plug failures

[Anthony Romano]

Rust prevention is part of the reason why I used a little castor in the 
fuel. Lots left in the garage so won't try all synthetic anytime soon. The 
bearings are now Stainless the crank has some light surface rust on it. Not 
too worried about it.
Plane is stored with the engine inverted so the plug is soaked in oil and 
crud when not in use. I did however just order a RS pro driver.
Glad we stopped talking about rules.

Anthony

>From: Brian Young <b4598070 at yahoo.com>
>To: anthonyr105 at hotmail.com
>Subject: RE: Glow plug failures
>Date: Wed, 12 Nov 2003 11:01:46 -0800 (PST)
>
>Is the rust on the bearing surfaces? If it has pitted
>the surface you might think about replacing, if its
>just a light blush or something and it runs
>ok.....your call. I cant remember an engine ive had
>that didnt rust the bearing cage as well as metal
>internal components, just that it didnt rust on the
>bearing surfaces so Ive never replaced a part because
>it rusted. The engines ive used castor in seemed to
>have less rusting problems, especially on the hot
>parts.
>
>Just my $1.00's worth.
>
>
>--- Anthony Romano <anthonyr105 at hotmail.com> wrote:
> >
> > Bad info there pipe is at 25".
> >
> > Interesting. Switched from no after run on stock
> > bearings, which didn't last
> > as long as the plugs, to SS with three of squirts of
> > Mobil 1. Usually, had
> > to pull the plug and spin the engine before I prime
> > for the first start. Now
> > using about one squirt of oil.
> >   Once you get some rust on the crank and rist pin
> > should they be replaced?
> >
> > Anthony
> >
> > >From: "Henderson,Eric" <Eric.Henderson at gartner.com>
> > >Reply-To: discussion at nsrca.org
> > >To: <discussion at nsrca.org>
> > >Subject: RE: Glow plug failures
> > >Date: Wed, 12 Nov 2003 13:32:51 -0500
> > >
> > >You might be using too much after-run. I killed
> > quite a few plugs that way.
> > >Switching to stainless bearings and using only two
> > drops of after run (for
> > >the crank) stopped killing the center pin. Too much
> > compression with the
> > >pure oil.
> > >
> > >Eric.
> > >
> > >-----Original Message-----
> > >From: discussion-request at nsrca.org
> > >[mailto:discussion-request at nsrca.org]On Behalf Of
> > Anthony Romano
> > >Sent: Wednesday, November 12, 2003 1:29 PM
> > >To: discussion at nsrca.org
> > >Subject: Glow plug failures
> > >
> > >
> > >
> > >
> > >Have an Os 1.40 that has a pretty healthy appetite
> > for glow plugs. First,
> > >was blowing the seal so I added a head shim and
> > pulled out the pipe a
> > >little. Now the just seem to loose conductivity.
> > Engine runs fine but go to
> > >restart for next flight and nobody home. Typically
> > lifespan is about 30
> > >flights.
> > >Using Type F, S&W 20% nitro 16%syn 2%castor fuel,
> > Es pipe at 23" with Mac 2
> > >1/"4 header, Apc 16.5 *12W resulting in a peak
> > setting around 8100 and a
> > >launch setting of 8000. Have another head shim on
> > order and will try a
> > >little longer pipe if the weather ever improves.
> > Any other suggestions?
> > >
> > >TIA
> > >
> > >Anthony
> > >
> >
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