Help my lady is too fast

[cheshire]

"All I can put it down to is water must be getting into the superheater and vapourising quickly,causing the engine to race.Try putting a little less water in. Basically it's the same thing that happened to Blue Peter at Durham"
[/quote]
That would make sense as she runs better with less water in the boiler.

Have been trying it out today and have noticed that the safety valve seems a bit odd (I am sure this is not a new thing and she has always done it). Does any one else have one that constantly hisses a small jet of steam above 20psi? It blows off ok at just over 40psi, but once steam is up and over 20psi there is a constant plume of steam from the safety valve. Not sure if this should happen or not? Thanks agaian

 

[bobg]

I think you'll find it's down the the type of safety valve seat. Most do whisper from even low pressure, evn the ones on Jill , as long as it isn't excessive then it's not a problem.

 

[MRail]

There's always the option of asking advice from Roundhouse.

 

[MRail]

I think you'll find it's down the the type of safety valve seat. Most do whisper from even low pressure

Yes all mine feather almost constantly - Roundhouse, Accucraft, Max-Hem & I.P.

 

[ZingyOrange]

Good afternoon,
I had the same problem with my Wrekin.When it was on the rolling road it would run at a nice even speed and all of a sudden race like hell then run at an even pace again.All I can put it down to is water must be getting into the superheater and vapourising quickly,causing the engine to race.Try putting a little less water in. Basically it's the same thing that happened to Blue Peter at Durham.

Hi all
I think this whats causing the excess speed. My silver lady does the same thing sometimes. It could be carry over from the boiler or possibly steam is condensing in the steam pipe to the superheater (as it isn't insulated) while the loco is stalled.

Regards

Dave

 

[brianthesnail96]

I think you'll find it's down the the type of safety valve seat. Most do whisper from even low pressure

Yes all mine feather almost constantly - Roundhouse, Accucraft, Max-Hem & I.P.

An advantage of coal firing is that you always have a shovel handy to give overenthusiastic safety valves a slight tap to shut 'em up!

 

[Elmtree Line]

I think you'll find it's down the the type of safety valve seat. Most do whisper from even low pressure

Yes all mine feather almost constantly - Roundhouse, Accucraft, Max-Hem & I.P.

An advantage of coal firing is that you always have a shovel handy to give overenthusiastic safety valves a slight tap to shut 'em up!

Not that bashing your safety valve will do it any good, you certainly wouldn't want it to stick shut after a bash :timeout:

 

[brianthesnail96]

I was thinking more on 5" I must admit Keith. They are probably a bit more durable in that size- and of course a weeping valve means a face full of steam!