Search found 14 matches
- Fri Aug 24, 2007 4:42 pm
- Forum: Valveless pulsejet forum
- Topic: M. and Mike's new experimental motor
- Replies: 27
- Views: 19769
one inlet versus four
JAC Kentfield (and his graduate student) discovered the same thing circa 1989. Conversion of a single inlet motor to four inlets resulted in an approximately 40% reduction in thrust. The project did meet the objective of allowing them to shorten the motor, but was a total disappointment from thrust ...
- Mon Aug 06, 2007 10:46 pm
- Forum: How to improve this site
- Topic: Time to bury the hatchet?
- Replies: 9
- Views: 12932
Mark, We're not talking about the same individual(s). You had me confused at first, and it took me a while to figure out who you were referring to, but after reading the relevant posts, I agree with you. I think Anders was referring to other individuals as well, but I can't be sure. Rather than carr...
- Fri Aug 03, 2007 4:29 pm
- Forum: How to improve this site
- Topic: Time to bury the hatchet?
- Replies: 9
- Views: 12932
Rusted Hatchet
One or more individuals who have left the forum have progressed far beyond anything that could be gained here. Why would they come back for more abuse?
- Wed Aug 01, 2007 10:57 pm
- Forum: Jet Vehicles, All Types
- Topic: F86-HPX-Sabre, By Rossco & IrvineJ
- Replies: 62
- Views: 743350
- Thu Jul 26, 2007 1:59 pm
- Forum: Valveless pulsejet forum
- Topic: Schedule 40 6" Test
- Replies: 34
- Views: 32205
Schedule 40 6" test
Before you put that engine away for good, you should put it on some wheels and attach a 300-lb spring scale to it and measure the thrust. It's easy to make a lot of heat and noise and hot blasts of air, but it's another matter entirely to make a significant amount of thrust. (And even more so from t...
- Mon Jul 23, 2007 1:27 pm
- Forum: Valveless pulsejet forum
- Topic: Schedule 40 6" Test
- Replies: 34
- Views: 32205
Re: Same stuff????
hey Vern what was the total thrust of that engine?Vermin wrote:Is it possible that this is reminisant of this? or somewhat similar? although bigger.....Just asking.
- Fri Jul 06, 2007 5:41 pm
- Forum: Valveless pulsejet forum
- Topic: Lady Anne Boleyn Rev07 Full Size Plan Drawings
- Replies: 53
- Views: 51842
Re: Lady anne
The reason being its got the best chance of working straight off the bat, I know this because of the the amount of time I spent on these engines. Then have you measured the thrust of your engine http://www.pulse-jets.com/phpbb2/viewtopic.php?t=4305&start=0&postdays=0&postorder=asc&highlight ? How m...
- Fri Jul 06, 2007 3:47 pm
- Forum: Valved pulsejet forum
- Topic: petal valves in dead end ?
- Replies: 9
- Views: 12145
Re: petal valves in dead end ?
... It is the mindsets which prevent progress, fear of contravening established customs which the small minds defend at any cost, coupled with poor resistance to brainwashing. Examine the attached image. ...This increases net intake area, improves filling and purging of the chamber and increases po...
- Tue Jun 12, 2007 7:35 pm
- Forum: Valveless pulsejet forum
- Topic: any body know cool things to do with a pulse jet?
- Replies: 43
- Views: 35548
Twin-pulsejet dragster with turbine whine
Cool twin-pulsejet dragster: http://www.youtube.com/watch?v=clOmc3WI5fk Too bad they mangled the audio with a phony turbine whine though...too much marketing BS... Anyway the video's fun to watch. Interesting to note how much flame is coming out of the motors, I doubt Bruce is going to do any braggi...
- Mon Jun 04, 2007 11:54 pm
- Forum: Valveless pulsejet forum
- Topic: Let's make valveless turbine bicycles!
- Replies: 56
- Views: 52494
How true! It's what you can learn from it that counts...you can build the "pretty one" later. You said your gage topped out at 130 MPH (~=191 FPS). I have found the following formula reasonably accurate for first approximation purposes, for measuring ambient temp airflows up to about 250 MPH: Airflo...
- Mon Jun 04, 2007 11:29 pm
- Forum: Tools and Construction
- Topic: I just calibrated my leaf-blower!
- Replies: 4
- Views: 7436
Re: I just calibrated my leaf-blower!
The readings were these: 25" 65mph 20" 80mph 15" 105mph 12" 130mph The indicator topped out at 140, so I couldn't get any closer to the nozzle, but expect that the curve will tell me where the higher speeds are. Can you tell us the pressure readings (in inches WC or mm Hg) from the pitot static gau...
- Mon Jun 04, 2007 11:20 pm
- Forum: Valveless pulsejet forum
- Topic: Let's make valveless turbine bicycles!
- Replies: 56
- Views: 52494
Hero's turbine
I just put some fuel through it as shown (not spinning!). ... I'm re-doing the hub. It's wimpy as it is. Got to spin this one up soon, even though I've re-designed it infinite times. I think at one time you said you were going to put a torque wrench on it...Even if you never actually spin it up (or...
- Sat Jun 02, 2007 12:29 am
- Forum: Valveless pulsejet forum
- Topic: Let's make valveless turbine bicycles!
- Replies: 56
- Views: 52494
Hero's turdine
What ever happened to the Hero's turbine of this thread?
Was it ever tested?
Did it ever work?
Was it ever tested?
Did it ever work?
- Mon Nov 06, 2006 2:12 pm
- Forum: How to improve this site
- Topic: I have sold www.pulse-jets.com To Mike Everman
- Replies: 23
- Views: 28314
re: I have sold www.pulse-jets.com To Mike Everman
How much did it sell for? $2500 USD?
Wonder how much it gone for if Kenneth put it on ebay?
Wonder how much it gone for if Kenneth put it on ebay?