Search found 1743 matches

by PyroJoe
Sat Oct 12, 2013 3:39 pm
Forum: Off topic forum
Topic: Favorite Quotes
Replies: 32
Views: 13145

Re: Favorite Quotes

"Our true nationality is mankind."
H. G. Wells
by PyroJoe
Sat Oct 12, 2013 2:47 pm
Forum: Unconventional, Multi-Mode and Hybrid Jets
Topic: Cyclonic Vacuum Jet
Replies: 5
Views: 3335

Re: Cyclonic Vacuum Jet

I would have to picture how the flow would work in there. Typically these things suffer when the tail pipe is opened along its length. Also there is a length of time when the intake is positive pressure, so the cyclone would have a very short inflow-stop-reverse cycle. In short, pressure drives flow...
by PyroJoe
Sat Oct 12, 2013 2:39 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53484

Re: M500 build log

great scot,
Looks like it will be a warm winter this year. If the oil burns a little slow, it may need to be heated.
Holy mother of sound that will be some noise.
by PyroJoe
Fri Jul 12, 2013 6:27 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53484

Re: M500 build log

Maybe you could find a gasoline 3 phase welding machine to tap in to?

Still it would probably be easier to utilize several 12 volt automotive rollervane pumps (approx. 7 bar) and slightly increase the input pressure if needed.
by PyroJoe
Tue Jul 09, 2013 4:46 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53484

Re: M500 build log

metiz,
could you pressurize the liquid fuel with propane before it is input into the pump? The mechanical pump would become a second stage then. If that concept worked it would allow both reasonably high volume and high pressure. Thoughts?
by PyroJoe
Mon Jul 08, 2013 4:46 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1716
Views: 328210

Re: Odds and ends

I am surprised how much running your doing in the summer. Is there a snorkeler that stands out as hot weather high humidity champ?
by PyroJoe
Mon Jul 08, 2013 4:42 pm
Forum: Valveless pulsejet forum
Topic: homemade jet bathtub that was powered by a BBQ propane tank
Replies: 42
Views: 16943

Re: homemade jet bathtub that was powered by a BBQ propane t

Looks like a good time. A little short on freeboard or was that an attempt at the submersible division? I hope it makes the fifth year. How did you like those Maddox engines?
by PyroJoe
Fri Jun 28, 2013 9:41 pm
Forum: Pulse detonation engine forum
Topic: Hello detonation "you look great"
Replies: 22
Views: 8956

Re: Hello detonation "you look great"

Interesting work, does the software allow different tube geometry. Maybe something like this:
by PyroJoe
Fri Jun 28, 2013 8:39 pm
Forum: Valveless pulsejet forum
Topic: Why won't my Pulse Jet run?
Replies: 15
Views: 4772

Re: Why won't my Pulse Jet run?

The injector pointing into the intake should be crimped to look like this picture. Also the regulator will definitely need to be removed. The injector should hiss slightly and have a flow that isn't laminar.
by PyroJoe
Tue Jun 25, 2013 5:54 pm
Forum: Valveless pulsejet forum
Topic: Why won't my Pulse Jet run?
Replies: 15
Views: 4772

Re: Why won't my Pulse Jet run?

What does your injection line tip look like, is it crimped?
by PyroJoe
Wed Jun 05, 2013 9:49 pm
Forum: Valveless pulsejet forum
Topic: Guess who's back... back again... shady's back
Replies: 25
Views: 7202

Re: Guess who's back... back again... shady's back

James I.
Sorry to here you lost some of your old stuff.
I have a word file and a video of liquid run you did in the past.
Would you like me to post these up?
An welcome back BTW!
by PyroJoe
Fri May 31, 2013 2:10 pm
Forum: Valved pulsejet forum
Topic: Dyna-Jet book
Replies: 12
Views: 4105

Re: Dyna-Jet book

Yeah, they kinda made Word a clustered mess lately. What I have done is to copy what I have over into notepad and strip all the word formatting garbage. I then re-open it in Word as text.

I don't know how useful that advice is, as you have a considerable body of text.
Best regards, Joe
by PyroJoe
Fri May 31, 2013 1:57 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1716
Views: 328210

Re: Odds and ends

It was neat seeing the tub fill up as the run progressed. Did you notice any differences as it filled?