www.pulse-jets.com

Hello, I found pulse jet plans from scientific supply, on eBay, they are great plans!!! I didn't build the engines in the plans,but the plans helped me get my engines that I already have, right&running. The plans from scientific supply,are state of the art,New PJ technology! I'd highly recommend the...

Finally success on my 117mm PJ. Starts&runs nice! Yay:)

Hello,if it helps,I've built a lot of beautiful PJs that were useless! Got so frustrated @ times!" I've heard the term simple pulse jet" lol,not quite!!! Lol. My hats off to these guys like Larry cottlil,etc...who figure these things out,&design such works of art!!! Are amazing!!! It is puzzling@ti...

Hello,if it helps,I've built a lot of beautiful PJs that were useless! Got so frustrated @ times!" I've heard the term simple pulse jet" lol,not quite!!! Lol. My hats off to these guys like Larry cottlil,etc...who figure these things out,&design such works of art!!! Are amazing!!! It is puzzling@tim...

I haven't measured the thrust, but all I know is she's a animal! & stuff that didn't blow of my shelves with other PJs. The hpx blew off my shelves all over the garage! Or standing behind it & getting blown in the chest, it felt powerful&the air blast is surprizingly cool temp. Very interesting" I r...

Hi,I'd recommended adding about 3" to your intake&put a flair on it. & for starting air use low psi. Approx.10 to 20 psi. Approx 1/2"away from intake, try to get burbleing sounds, & increase your gas when you find that burbeling sound.

I've found pyro joes recipe for beginners,to be very helpful.

Hello,my 1st build was Larry Cottrills little FWE, it is a great 1st engine! I just can't say enough good about that little fwe. It can also be converted to a hpx later on. I have dim. Of my hpx under successful hpx plan. I built Larry's fwe 1st & got so hooked on PJs!!! It has been such a great hob...

Hi,nice build,I've been going as light as possible for flight engines, I just can't figure out how to get the fwe styles to run on liquid fuels? I've tried several ways! Was very close on methanol&vapor coil,but it ossolates&won't sustain on liquids, its probably something simple? If you find a way?...

Hello,I did post my hpx dimensions under, successful hpx plan" if ya have any ideas on how to get her to run on liquid" that would be great if you could clue me in on a good way for a flight system. Thx much,!

Hello,I did post my HPX dimensions in the valveLess section,under successful HPX plan.hopefully that will help in designing a liquid system for it,help will be very appreciated!!! Thx much!!!

I've found it is fairly easy to make the body sections out of paper 1st, & mock up the entire body in paper,than you can cut the sections open&trace them on your metal.

Here are the dimensions of my hpx.It is a strong runner!

Hi there, here is my hpx dimensions, mabey it will help in figuring out a liquid injector for it, that would be the bees knees!!!

gettylee wrote:This engine runs very strong on propane.liquid fuel would really be awesom!

By the way, I just scaled a pic. Of a hpx I saw on here.I didn't design it,just scaled it & got lucky" I'm very happy with it!!!