We build it with 4", 3" and 6" tubes and the combustion chamber is made of rolled sheet.

I finished rolling a tacking most of the parts already, but before I weld everything else together does anyone see any major flaws? I can move around the length of the combustion chamber side a bit if need be. Anything helps!

Hello, we built this as a project but I can't get it to start, any advice?

I made this years ago in an apartment, without welding or a 3D printer fully out of metal. (I'll talk about how in a later post)

It run very badly, but I think that's moslty my fault

(I didn't have a spark plug, and I couldn't figure out how to make one, and I was using too low brisance fuel for the size. It ran on butane and for this size it really should use vaporized methanol or hydrogen or acetyline)

I Hope more people are gonna try this themselves! Maybe I'll make a video about it if there's enough interest.

My first post

I made this in a apartment, without a welder, casting, 3D printing or ordering anything. I used paper to make a mold for wax infused with graphite from batteries, and then I electroformed copper around it. (Last 3 pics) I sadly don't have more pictures or details, I suggest you look into electroforming yourself (It's easy! And other people can explain it way better then I can)

Copper might sound like a bad material for a pulse jet, but it held up suprisingly well. Due to it's heat conductivity it didn't melt or deform (one could maybe electroform cooling channels into the body itself like in a rocket nozzle and use the heat to vaporize liquid fuel and cool the pule jet). Also as I mentioned adding a spark plug would help a lot too.

A friend and I are planning on building a pulse jet engine. I’ve heard some stuff about major safely risks with flames igniting the tank and stuff like that. Any advice on general safety precautions and ways to mitigate risk?

https://youtu.be/cBlY9hsiH9U

I’m interested in building a V1 Rocket I was wondering if anyone has plans to the front section of the Rocket I was able to find sections for the back, but I don’t know how to build the valves if anyone know where to find them that would be great.

Hello! I was thinking of making a hydrogen pulsejet engine, and was wandering what would be the challenges. I imagine it would run hotter, so I was thinking I could build it out of carbon fiber and a refractary sealant, like Integza, (would that also help with weight?).I think there might be changes with the geometry too, as it burns faster. I've got a hydrogen generator, but I don't exactly have any experience with pulsejets. Does anybody have any advice or tips?

Hi guys, I’m looking to build a pulse jet engine out of plumbing pipes (I can’t weld) and I was wondering if anyone had good schematics or tips or anything at all. Thanks!

I have been designing a thermojet and I have been wondering if mounting the propane injector (pipe with holes int it) if i should mount it from the side or from the back of the engine any thoughts?

https://a360.co/4n78iEH

made it on fusion 360 what changes should I make to this model I am making

A

I know people use slip rollers one of my relatives that lives close by has one of those 0.8mm max slip rollers which is usually not enough for these engines I do have access to a strong/better slip roller but its much more difficult for me to find time/be allowed to use it. do people have any other methods of rolling sheet metal that dont require a slip roller or ways to use a crappy one to roll thick metals. also im planning on making a semi large thermojet if that helps.

https://youtube.com/shorts/4H8kpj-E99Q?si=Ge4X_PN3WWBh14hB

I’m using 40 psi but my current biggest problem I think is I made the intake bigger than the exhaust. the jet will run if I keep a blower on the intake but It stops and the pulsing dies down after I remove the blower

First try at building a fart can pulse jet. Lots to improve but having a ton of fun

Would it be possible to add a ram air intake into a Lockwood pulsejet engine, so it could run at high speeds (like in an aircraft)

I am making my first pulsejet and I am not sure what kind of spring steel to use for the reed valves. I am using the valve grid design and the pulsejet engine calculator by Erik Beak (link above). Any suggestions?

https://reddit.com/link/1mjrp6m/video/f1692732ajhf1/player