Search found 1575 matches
- Wed Aug 30, 2017 2:13 pm
- Forum: Valveless pulsejet forum
- Topic: Annular M20
- Replies: 5
- Views: 8583
Re: Annular M20
Thanks, Mark.
- Tue Aug 29, 2017 6:25 pm
- Forum: Valveless pulsejet forum
- Topic: Annular M20
- Replies: 5
- Views: 8583
Annular M20
I build an annular version of the M20 about a year ago. I could not get the injectors out far enough to get it to run. A couple of weeks back I fixed the issue and today I tried again. Although it runs, it's a huge pain in the ass to get going. Thrust is rather disappointing too: 11.4 pounds (origin...
- Thu Aug 17, 2017 11:55 am
- Forum: Valveless pulsejet forum
- Topic: Mike's Build Log
- Replies: 441
- Views: 329722
Re: Mike's Build Log
Hi Mike, Just a thought but the fuel you are using is ethanol? - very hydroscopic- Dave, a mate of mine, who is well into his chemistry, can process/refine it to remove almost all the water - I can ask him what it is he does to do this ( I recall he added something to the fuel and it solidifies at ...
- Mon Jul 31, 2017 10:51 pm
- Forum: Off topic forum
- Topic: youtube
- Replies: 1512
- Views: 547691
Re: youtube
I was realy excited to read that article, until I saw the 100 grand price. Not quite mainstream. 100 grand will buy you a lot of nice machining tools
- Tue Jun 13, 2017 8:06 pm
- Forum: Off topic forum
- Topic: youtube
- Replies: 1512
- Views: 547691
Re: youtube
Lol it's a scaled version of the M500, tailpipe reinforcements and all
- Wed Jan 18, 2017 5:11 pm
- Forum: Valveless pulsejet forum
- Topic: Thermojet not producing thrust
- Replies: 1
- Views: 4598
Re: Thermojet not producing thrust
it doesn't look like you flared the intakes. This will limit throttle range and thus thrust. Flare them and try again. It'll run a lot harder
- Fri Oct 14, 2016 10:58 pm
- Forum: Valved pulsejet forum
- Topic: Pulse Jet Compression
- Replies: 6
- Views: 10852
Re: Pulse Jet Compression
Easily. No moving parts to waste energy on
- Thu Sep 22, 2016 10:14 pm
- Forum: Valveless pulsejet forum
- Topic: Do you see anything wrong with this pulse jet?
- Replies: 8
- Views: 9659
Re: Do you see anything wrong with this pulse jet?
I'm not sure about our injector suggestion - I have never done an injector like this. I don't think you'll be able to start automatically like this. just try with a hand hold Rosscojector to see if it starts easier. Once running, switching to liquid fuel should be doable.
- Wed Sep 21, 2016 3:55 pm
- Forum: Valveless pulsejet forum
- Topic: Do you see anything wrong with this pulse jet?
- Replies: 8
- Views: 9659
Re: Do you see anything wrong with this pulse jet?
Ah now I see. the small version of the picture made me believe that was a sparkplug. I think that is the crux of the problem though: the motor doesn't like the injector at that point. You want a tube pointing down the intake, depending on type, 0-50% of the length. The fuel is now delivered at the w...
- Tue Sep 20, 2016 10:40 pm
- Forum: Valveless pulsejet forum
- Topic: Do you see anything wrong with this pulse jet?
- Replies: 8
- Views: 9659
Re: Do you see anything wrong with this pulse jet?
Open up the spark gap a bit to get the gas to properly ignite. What kind of injector are you using, and is the propane bottle full and unrestricted?
- Fri Aug 19, 2016 9:43 am
- Forum: Valved pulsejet forum
- Topic: Pulse Jet Compression
- Replies: 6
- Views: 10852
Re: Pulse Jet Compression
I'm still here!
- Thu Jul 14, 2016 12:03 pm
- Forum: Off topic forum
- Topic: Nomenclature: pulsejet vs ramjet (Was V1 Clone)
- Replies: 8
- Views: 13216
Re: Nomenclature: pulsejet vs ramjet (Was V1 Clone)
When the forum is as dead as this one, any post is apreciated. Thanks for the reference!
- Tue Jun 07, 2016 8:05 pm
- Forum: Off topic forum
- Topic: June 12th
- Replies: 4
- Views: 7127
Re: June 12th
I see. Why would we want to celebrate this exactly, Fileeraus?
- Mon Jun 06, 2016 10:55 pm
- Forum: Off topic forum
- Topic: June 12th
- Replies: 4
- Views: 7127
Re: June 12th
What's special about june 12?
- Wed May 25, 2016 5:40 pm
- Forum: Valveless pulsejet forum
- Topic: would this be considered a low frequency rudimentary pulse?
- Replies: 7
- Views: 10094
Re: would this be considered a low frequency rudimentary pul
Try something like this. Bend your injector tube back 180 degrees so you can tie it to the intake with some hose clamps. are you talking about keeping the torch attachment or removing that all together and hooking the propane directly up to the injector tube? Like Tufty said, lose any restriction b...