Glow plug failures

[Wayne Galligan]

RULES.......WHAT RULES?   I used to use more then a few drops when I ran my
S.T. and  when I stopped using after run the plugs lasted longer.  My OS
runs just fine on Cool Power.... didn't have bearing problems till I
switched to Magnum brand.    "New topic"

WAG


----- Original Message ----- 
From: "Anthony Romano" <anthonyr105 at hotmail.com>
To: <discussion at nsrca.org>
Sent: Wednesday, November 12, 2003 1:14 PM
Subject: RE: Glow plug failures


>
> 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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