[modeleng] Re: Injectors - asking the question again
- From: Peter Sheppard <peter.sheppard@xxxxxxxxxx>
- To: "'modeleng@xxxxxxxxxxxxx'" <modeleng@xxxxxxxxxxxxx>
- Date: Thu, 9 Dec 2004 20:49:31 -0000
Hello Roger,
I am no expert, but size isn't related to pressure.
They are generally sized in pints/minute? (or oz per minute), so I'd work
out the volume required to fill the boiler from bottom nut to top nut and
how long you would be comfortable for that to take.
In the case of Elidir, I have two injectors and we reckoned we needed
30oz/minute (1.5 pint) and they are quite chunky!
Cheers
Peter
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Peter Sheppard BSc (Hons) CEng FIEE FIRSE FSaRS
Principal Consultant
Lloyd's Register Rail Limited
5th Floor, 37-39 Corn Street
Bristol BS1 1HT
T: 0117 929 4443
F: 0117 929 4554
M: 07760 167 617
E: peter.sheppard@xxxxxxxxxx
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-----Original Message-----
From: Roger [SMTP:roger.g3tdm@xxxxxxxxxx]
Sent: Thursday, December 09, 2004 10:01 AM
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: Injectors - asking the question again
Hi,
Whilst on the subject of injectors, some of you will know that I am
trying to finish off an Allchin traction engine in 1-1/2" to the foot
scale.
I have got round to piping the various steam valves to their
appropriate destinations. One of them goes to the injector. To my
surprise the original articles (I have them all bound together as a
builder's manual) has no mention of the injector, other than to show
you where it is located.
Anyone know what sort of size injector is used on this model
engine. Anyone have references to a design of a suitable size that
works with steam pressure up to about 80 psi?
Thanks in advance.
Cheers,
Roger Mason, in St. Agnes.
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