[modeleng] Re: Spark Arrestors
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Mon, 16 Aug 2004 05:14:18 -0700 (PDT)
Peter, was this fuel from a different lot from that
you had been using? If you have been using the same
spark arrestor for a year without problems, I would
have a look at the fuel.
Al Messer
--- The Sheppard Residence <peter@xxxxxxxxxxxxxxxxxxx>
wrote:
> Yesterday I was running Mouland at the Lackham
> Museum and Woodland
> Railway.
>
> All was going well, then she lost steam and the fire
> refused to draw. I
> put the electric blower in and the fire picked up.
> It got to about
> 40psi and I removed the electric blower and went
> back to the steam
> blower. The fire went out!
>
> I dropped the fire, rebuilt it, and restarted using
> the electric blower.
> The fire picked up nicely. At about 35psi I
> swapped to the steam
> blower and a healthy fire disappeared!
>
> I opened the smokebox door up and there was a good
> blast of steam from
> the blower. It was then I realised that some of the
> steam was coming
> back towards me. My original thought was a leaking
> blower steam pipe.
>
> However, it turned out that the blast from the
> cylinders (carrying with
> it some oil laden soot particles) had blocked the
> arrestor directly
> above the blast pipe and when the blower was put on,
> the steam was just
> rebounded off this soot and went back down the tubes
> onto the fire.
>
> Once cleared it was OK.
>
> I've had this arrestor in place for at least a year,
> it gets cleaned
> after every run, but this is the first time that
> after what what a very
> short time after steaming up, it got blocked.
>
> What size mesh to other people use in a 7.25"
> locomotive? (Is size of
> the locomotive important?) Has anybody else had
> this problem?
>
> Regards
>
> Peter
>
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