Material Thickness

[RMMK]

I was planning on building a 25lbs Valved Pulse Jet Engine but couldnt figure out how much thick should the tail pipe and the combustion chamber be? Can I use a #25 Gague Mild Steel Sheet rolled out for my given diameter for the same purposes? Will it be enough?? Plz help! Also this one will not be intended for static trials in the future........ I used Eric Beck calculator for the dimensions!

[Rocket Man]

I use muffler pipe and EMT electrical conduit for building engines. I'm not sure of the thickness maybe .060". It takes some practice to weld it with my a stick welder using my old 1970s Lincoln Welder.

[RMMK]

I use muffler pipe and EMT electrical conduit for building engines. I'm not sure of the thickness maybe .060". It takes some practice to weld it with my a stick welder using my old 1970s Lincoln Welder.

But this way the pulse jet will weigh more than 2 kgs which will make life difficult for me as I want the same to be as light as possible....... for a possible integration into my model airplane, which i havent build yet!

[metiz]

reconsider using mild steel, especially if you are ging to use it in a plane. If you use stainless steel, you can get way with 0.3 - 0.5mm (with 0.3 you'll need active cooling) Mild steel will rot in no time.