www.pulse-jets.com

first can someone tell me if you vaporize gasoline and use it instead of propane will it work? if its does will you get more thurst. second And I know this might be stupid but at the temp a pulse jet works while its running if you vaporize water and inject it in might it work like nos in a car the ...

Unfortunately, the Sanitary Tubing U bend would be several hundred dollars (remember, this is 4-inch stainless tubing) and it would take a few hundred more to make the mounting hardware. So, don't look for this anytime soon ;-) It would, of course, be my first "bent" engine. Mr. Cottrill, if it int...

Thanks, for the reply, Viv! To answer your question, "HPSCL" stands for H ydro- P neumatic S upercharged C ombustion L auncher"... Many years ago, I designed the world's first "supercharged" PVC combustion launcher. They're more commonly referred to as "Hybrids", in the spudgunning community. At the...

When using a curved surface to mount your tailpipe and/or intake to, where is the starting point (of the length) of your component?
** Is it at the longest (top) or the shortest (bottom) of where the component enters into the combustion chamber?

Note: Please refer to attached drawing as a reference.

That looks like a pretty cool idea. I might have to try it out on the big lockwood. Any ideas on how many holes you think to run a big lockwood? Keith I found a pdf file on the fuel rail for a large pulsejet, on this topic: Lockwood Help 16 holes (8 sets of 2; holes were drilled straight-thru) @ 0....

..... The inside diameter (If I'm not mistaken) of 5/16" Steel BrakeLine is 1/4" and the O.D. of 1/4" Steel BrakeLine is (of course) 1/4" . - If you were to sleeve the 1/4" BrakeLine, with 5/16" Brakeline... FI1.jpg ..... While you're trying to start your newly-fabricated pulse jet, this sleeve cou...

You're quite welcome... but please forgive the fact that I also should have mentioned that flaring the opening of your intake will help enormously. If you're not adding one as a separate piece, make sure the flare is even all the way around. I wish you Good Luck and hope to see you post, by later th...

I have made a lockwood hiller model valveless pulsejet engine.its my first attempt and initial starting made it work okay.but when i tested again the engine is starting with a blast and then after removing the compressed air from the inlet the engine is not sustaining its operation .Instead the gas...

Might consider the M25 by metiz: http://www.pulse-jets.com/phpbb3/viewtopic.php?f=3&t=5877 No bends in that one, and a proven design :wink: It is not adviseable to hard fold a Lockwood as they are some what based on the Marconnet, with a larger volume of the CC nearest the tail. I have tried to har...

Well, this thread has become stale. Since I am still waiting for any reply for an engine, I have since decided to move on to a different design. There are plenty of large lockwood designs out there. The reason for not going to one originally was that tricky U-bend. Unsure of how to get one I ruled ...

walker925 wrote: Also if this won't work, I'm going to give up on it for now and try the ugly stick. I need this for a science project thats approaching, and the ugly stick looks pretty easy. any suggestions?

Sent you a PM
EDIT: Oh... you already replied - sent you another PM. as well.

As Mr. Everman stated; If you're not able to achieve a leak-free joint, it'll make the engine much more difficult to get running. Even if by some chance you do get it running, a small leak will severely limit it's throttle range. - Another downside is the fact that you're using galvanized pipe. I've...

It (more than likely) won't, with the way you have it set-up now. The reason being, is that you have it configured "Shubert"-style. (With the intake and tailpipe "inline". The engine's flame-front will cycle straight back-and-forth, rather than circulate. I've found that kind of configuration extrem...

°- The length of your tailpipe should be 11 times the I.D. (Inside Diameter). °- The INSIDE of the end of the tailpipe should be filed, so that there is a smooth taper. °- Calculate the volume of the finished tailpipe. ( Pi x R² x length) °- Your combustion chamber's volume should EQUAL the tailpip...

... Unless you have something else that I missed on youtube. I made this out of spare parts that I had lying around. - I would safely assume that it could easily melt snow. Propane torches were selling between 60-100 bucks and I was being a cheapskate, as always. I would guess that a professionally...