5 inch gauge Stirling single injector position

5 inch gauge Stirling single injector position

This topic has 1 reply, 2 voices, and was last updated 6 October 2026 at 17:33 by Baz.

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6 October 2026 at 16:10 #868124
Michael Callaghan
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@michaelcallaghan68621
Hi out there. Well I must say that the Stirling single must be the hardest loco to plump. My question is this. Just how many bends can I make to and from the injector. From the steam turret I have around 3 easy 90 degree bends on the pipe work. However due to the clack valve being on the back head behind the injector I need to made a 180 degree bend and then a 90 bend. Will this be ok? Due to limited space I am using 3/16 tubing.
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6 October 2026 at 17:33 #868137
Baz
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@baz89810
If you are using a 12 or 18oz injector the 3/16 tube should be ok, especially if it is thin wall tube. Keep the bends as big as possible and pipe runs as short as possible. I have had to use 5/32 tube on a 12oz injector for water, steam and delivery due to limited space, the injector is mounted between the frames, left to right on a small 5” loco, Gemma, designed by David Malcolm and serialised in EIM, it works faultlessly every time, injector is made to the design of DAG Brown in his superb book.
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