www.pulse-jets.com

Well that's poop! I'll have to try again this weekend. It blows out the flame when I open the gas. Once I got the gas fully open and it didn't go out or be particularly louder. Low key frustrated again lol... I was so sure after the tail pipe had changed colors this attempt. Edit: this is me startin...

I got it running for real this time, i think!

https://youtu.be/994hZP5Jh6g

I'm so pleased!!!

Hey, its only 3 you know! Big difference. I wanted to build Joe's #4 as my second one but I didn't have bendable steel available at the moment. Then my professor brought in 1/16th " steel and my eyes lit up!

Ahhhh further out, I missed that tidbit! Oops. I'll try it again tomorrow after welding is out. Im halfway done with the 4th Pyro joe design just need to roll out a cone for the tail!

I can open the gas all the way and it blows out the flame. I don't have a regulator on the tank. I think the rosscojector(?)'s slit was too wide. I pinched one tighter after that video and it makes this phenomenally loud roar for about a half second before backfiring. I think THAT injector wasn't fa...

I dunno, it had sound when I uploaded it. I'll just put it on YouTube. I've gotten rusty at these old types of forums:P

https://youtu.be/Gb6abseTDIg

https://i.imgur.com/Xp19VJp.mp4 I made a new injector and it runs! I think!? It roars louder when I jam the torch down it while its running. I feel like it could do more for its size. Edit: crimped the injector nozzle even tighter and it makes an extremely loud roar for a split second before backfir...

Thats a very high quality blueprint. I was afraid it was too kinked ive got plenty of tubing left so I'll try it again, thanks! I suppose my injector was that far down the intake after all. I'm scrounging for a big enough piece of sheet steel to roll the exhaust cone on my new engine. Thanks for all...

A rosscojector is that pinched narrow slit tube right? I had a 1/4" hose adapter straight on the propane tank. A rubber tube leading to the copper tube. I had the injector about half way down the throat of the intake and that didn't work. I manually held it about an inch away and that almost worked....

I tried running my engine today! I think I got it to sort of idle I suppose. It made a low rumble and there was a flame pulsing in the bottom of the intake but no earth shattering roar or red hot chamber. It felt SO CLOSE to running! I ended up putting the injector about an inch outside of the intak...

Good to know! I wasn't sure if I'm overthinking it and trying to put it on raised brackets and what kind of tie downs. Thanks! We'll see if it runs tomorrow!

I need to make a mount for my engine. Something like straps nailed to a board with a metal sheet in between should be sufficient? I'd hate for my shiny new engine to escape. I'm not trying to measure thrust right now, just to keep it in place.

I did add a thin sheet metal sleeve and tack welded it around the bottom then did a small weld around the lip of the intake.

Hi folks, just joined and finally made my first jet. Been meaning to do one of these for *years* . Once I got to TIG in my welding class I knew what I had to do. I made this fella without any real plans and just winging it. Its bad and poo. https://i.imgur.com/dh9olqI.jpg So next I made one off *act...

Here's my next attempt. 4x8 inch combustion chamber, 1.5x5.5 inch intake, 2x40 inch exhaust. I believe I've followed the caliber guide?



Fingers crossed then!