Glow plug failures

[ronlock]

Hi Anthony,

My OS 1.40 is set up much the same as yours, though with 15% nitro
S&W, including 2 to 3% castor.  OS-Fs last fine-seems like I change
them before the NATs on general  principe.   But interesting- just
two weeks ago I had one loose conductivity.   It had only about
50 flights on it.

later, Ron Lockhart
----- Original Message ----- 
From: "Anthony Romano" <anthonyr105 at hotmail.com>
To: <discussion at nsrca.org>
Sent: Wednesday, November 12, 2003 1:29 PM
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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