Search found 413 matches

by hagent
Thu Jul 26, 2007 3:09 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

Here are some photos of the extra bracing that I did to the frame that holds the PJ. It doesn't look like much but it seems to be working well. As Eric pointed out there is a harmonic flexing at the very end of the exhaust that I will have to dampen out with some added support. I didn't have any rol...
by hagent
Thu Jul 26, 2007 2:40 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's big PJ

Thanks Eric, I think I might just have to take you up on your offer to send me some short pieces of tubing. Let me know how much I owe you for shipping, materials, and your troubles. Oh and if you have some of that 1/8" 304 round stock for me to put on the exhaust that would be of great help. I don'...
by hagent
Wed Jul 25, 2007 8:27 pm
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

Ok here is a drawing of an injector that I was thinking of. The small fuel tube enters the intake and make a 90 deg turn. It then enters a larger tube, at the end of the large tube the small tube has holes in it to let the propane out. The propane expands and flows into the large tube and towards th...
by hagent
Wed Jul 25, 2007 7:45 pm
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

Hey Eric, Thanks for all the good info. Based upon your discription of earth shattering force, I do have to admit that my pulse jet was not at that level. So with that said I probably was flaming out because of bad fuel setup. It did seem to be putting out a good amount of thrust but I didn't have a...
by hagent
Wed Jul 25, 2007 5:28 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

Hey Thanks Eric for the info. I was wondering what happend to you. Glad to here you have so many projects to keep you busy, if you get $1 for half of those projects you can adopt me:) I don't have any round stock on hand... So I'll have to get some or think up a different solution. Thanks for the in...
by hagent
Tue Jul 24, 2007 8:23 pm
Forum: Valveless pulsejet forum
Topic: Lady Anne Boleyn Rev07 Full Size Plan Drawings
Replies: 53
Views: 24092

Real nice work Larry,

I really like this design.

You always go the extra mile on all your projects. I hope she runs strong and can't wait to hear the good news!
by hagent
Tue Jul 24, 2007 6:46 pm
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

This engine should put out between 100 and 150 lbs.

I've went ahead and bought one of these! This should help solve my fuel issues and having to put the tank upside down.

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... d=1&rd=1
by hagent
Tue Jul 24, 2007 4:39 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big PJ

Hey Adam, The combustion chamber is 8 inches OD. So it's a little bit bigger than Eric's. I'm not sure if I would want to try the flaming intake method. I have to use quite a bit of propane to just get it to start. I started it the first time on vapor only with the tank about 1/3 full. It ran for ab...
by hagent
Mon Jul 23, 2007 5:45 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's Big Pulse Jet

http://www.youtube.com/watch?v=S6QQnuhl8Ak I was able to run my pulse jet today! I can't believe that it has taken me this long to find the time to spark it up. We ran it a few times at the Camerillo airport. Got it nice and red hot. Here is a quick movie that shows it starting and possibly flaming...
by hagent
Fri Jun 22, 2007 12:00 am
Forum: Valveless pulsejet forum
Topic: Liquid Fueling Made Easy - Adv. Injectors For Liquid Fuel
Replies: 33
Views: 18484

Injectors

Hi Eric,

Are you selling your injectors yet?

I want one for the monster...

One that can be put down the intake not through the CC.

Thanks,

Hagen
by hagent
Thu Jun 21, 2007 11:30 pm
Forum: Valveless pulsejet forum
Topic: 50 lbF 'Lady Astor' Not For Beginners
Replies: 184
Views: 63219

Re: Induction Design

Hi. Vern. This is a speculation based upon an interpretation of videos such as: http://www.pulse-jets.com/phpbb2/files/twin_178.wmv (This video can be found in the Files section of this forum) Opposing twin induction stacks, appear (to me) to produce good impinging gassflow during induction. A numb...
by hagent
Sat May 26, 2007 9:51 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Re: Hagent!

Fly to Brisbane since your in Australia come see me and rosco! :D I'll put you up for the night if you don't mind the spiders hehehe, we can go wild in my garage. If your keen let me know. Emails at the bottom here, as is my skype. Thanks for the invite James! I really wish I could go. My wife woul...
by hagent
Fri May 25, 2007 9:43 am
Forum: Valveless pulsejet forum
Topic: Hagen's Big PJ
Replies: 38
Views: 16481

Hagen's been out of town

Sorry guys,

I was in London for a week and a half, then Singapore for another week and now I'm stuck in Melbourne for two or three weeks.

So I haven't been able to fire up the big one, and of course make all those modifications to the stand.

At least I have something to look forward to.

Cheers,
by hagent
Fri May 11, 2007 10:15 pm
Forum: Valveless pulsejet forum
Topic: Prettiest FWE (?) - the 'Lady Anne Boleyn'
Replies: 133
Views: 88791

Welding SS

I did with my large pulse jet. You must use a carborizing flame. If you don't the metal will just end up as slag. I think the welding rod is 308. Good Luck, Larry is great at welding SS with Oxy Acetelene. It also took me awhile to figure out if your weld break suddenly as they cool down, then you h...
by hagent
Wed Mar 28, 2007 3:37 am
Forum: Valveless pulsejet forum
Topic: Let's make valveless turbine bicycles!
Replies: 56
Views: 22162

water and PJ

Hey Eric, I think you just created a great industrial humidifier! Should be good for a large building. On second thought maybe we could use it as a snow machine? Seriously if you use liquid water at 0 deg C or just above it should get thrown out and turn in to snow in the cold evening air! Plus you ...