Building a Clayton 2" Scale Steam Wagon
designed by Robin Dyer
built by Tony Simons
Taking a measurement before the test
177.24mm
Small leak
Pressure connection
15 Bar pressure
Dry
No leaks!
177.28mm after pressurising
Boiler testing
A new boiler needs a shell test, hydraulic testing to 200 psi, which is twice working pressure. I took it up to 50psi and I found a small leak around one of the tubes, I re-flowed the silver solder and retested gradually taking the pressure up to 200psi. I held it there for 20mins. The boiler grew in diameter by 0.04mm.
The video shows a small leak!