MadModder
Gallery, Projects and General => How do I?? => Topic started by: speedibee on November 05, 2018, 03:54:45 PM
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I have made a replacement boiler for a small static engine that belonged to my father . basicly it's a brass tube with 1.5 mm wall . with 2 end caps . will this need silver solder or would normal solder do ?
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I have never heard of anyone using normal solder I’d go with the silver solder seeing as your dealing with a pressure vessel.
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Elf and safety have stuck there ore in on boiler making it will have to be silver soldered , https://www.sfmes.co.uk/ydrRoot/committees/boilerSC/Forms/testCode2018_volume2.pdf .
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I have oredered some silver solder . it will most likey ony ever run once ,I have to know it works then it will be an ornament
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Better an ornament than a dent in the ceiling, or worse, a dent in you !
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I have made a replacement boiler for a small static engine that belonged to my father . basicly it's a brass tube with 1.5 mm wall . with 2 end caps . will this need silver solder or would normal solder do ?
Contrary to what others would have you believe, ordinary tin/lead solder would suffice, BUT it depends on the working pressure and the safety valve release pressure.
As an example, the makers of Meccano/Mamod used soft solder for their brass boilers but the relief pressures are fairly low at around 20-25 psi and the heating system is such that the fuel runs out before the boiler runs dry, secondary relief is provided by the face to face surfaces of the cylinder/port block....
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Contrary to what others would have you believe, ordinary tin/lead solder would suffice, BUT it depends on the working pressure and the safety valve release pressure.
As an example, the makers of Meccano/Mamod used soft solder for their brass boilers but the relief pressures are fairly low at around 20-25 psi and the heating system is such that the fuel runs out before the boiler runs dry, secondary relief is provided by the face to face surfaces of the cylinder/port block....
You got there before me! I can concur, I remembered the soft solder Mamod stream engine that I had as a child!
Regards, Matthew.