Search found 33 matches

by Heath Daily
Wed Oct 18, 2006 7:30 am
Forum: Valveless pulsejet forum
Topic: Spherical Combustion Chamber
Replies: 23
Views: 9425

re: Spherical Combustion Chamber

Hollow stainless (304) balls in 1.5 to 6" If you get the catalog, they show up to 12" diameter. http://www.thomasregister.com/olc/SmartCat.aspx?&az=73226961&type=list_order&show=part_number+part_name+Dia+unit_price&number=7&showdiscounts=no&template=http://www.sharpeproducts.com/temp.htm&ptno=S150-S...
by Heath Daily
Mon Oct 02, 2006 6:06 pm
Forum: Valveless pulsejet forum
Topic: Started welding up my first Lockwood
Replies: 14
Views: 8012

re: Started welding up my first Lockwood

I never even heard of 'em, must be because everyone locally heats with electric or propane. I'll have to check 'em out.

Thanks for the tip!
by Heath Daily
Mon Oct 02, 2006 7:28 am
Forum: Valveless pulsejet forum
Topic: Started welding up my first Lockwood
Replies: 14
Views: 8012

re: Started welding up my first Lockwood

Went to a local farm supply store and looked at a great many different spray tips. Unfortuneatly everything that looked good was either brass or plastic. Neither of which will take the heat. There's a much bigger place about 30 miles north of here, I'll have to try it soon and see if I can find some...
by Heath Daily
Sun Oct 01, 2006 3:49 am
Forum: Valveless pulsejet forum
Topic: Started welding up my first Lockwood
Replies: 14
Views: 8012

re: Started welding up my first Lockwood

I'm going to fuel it with a stinger / wand. I expect this will be simple brake line with either a pinched end and cross drilled holes, or an attached fitting with holes drilled radially. Kind of a K.I.S.S. excercise. I figure the more exotic I go on my first attempt the less likely it is to even run...
by Heath Daily
Sat Sep 30, 2006 7:23 pm
Forum: Valveless pulsejet forum
Topic: Started welding up my first Lockwood
Replies: 14
Views: 8012

re: Started welding up my first Lockwood

Everything is mild steel. The ends are weld-on pipe caps, commonly used to finish off the top of posts. Kinda like the safety posts you'll see across the front of a wal-mart to prevent car / pedestrian impacts. Though wal-mart usually just caps them with a little concrete.
by Heath Daily
Sat Sep 30, 2006 8:52 am
Forum: Valveless pulsejet forum
Topic: Started welding up my first Lockwood
Replies: 14
Views: 8012

Started welding up my first Lockwood

I'm finally getting back around to pursuing a pulse-jet project. I've had the itch for awhile now, but just not the time/money to scratch it. Have a look at the drawing and pictures below and tell me what you think of the design will you? Note, that I had to take the combustion chamber diameter up t...
by Heath Daily
Thu Dec 23, 2004 8:23 am
Forum: Off topic forum
Topic: Cone mystery
Replies: 4
Views: 2196

Re: Cone mystery

Looks like an adapter to me. The fan blows through the cone into the hose. Why, I have no idea.
by Heath Daily
Thu Dec 23, 2004 7:15 am
Forum: Tools and Construction
Topic: Induction coil
Replies: 2
Views: 2025

Re: Induction coil

You can do that with an old points style automotive coil and just about any normally closed relay. Power the relay though itself and it will pulse very rapidly. Use that pulsing power to run the coil and don't forget the points style capacitor hooked to the pos side of the coil. I have used the blow...
by Heath Daily
Wed Dec 22, 2004 6:47 am
Forum: Valveless pulsejet forum
Topic: FWE experimental intake configurations!
Replies: 173
Views: 79938

Re: FWE experimental intake configurations!

What Larry said about wanting the fuel/air to stop just inside the chamber got me to thinking. While it isn't practical to stop the a/f you could almost completely halt it's forward motion. What I'm thinking of is taking an automotive exhaust valve and sticking it in the intake, with the intake not ...
by Heath Daily
Thu Dec 16, 2004 6:06 am
Forum: Valveless pulsejet forum
Topic: Off-the-shelf Lockwood?
Replies: 6
Views: 2864

Re: Off-the-shelf Lockwood?

mk- I kinda figured I'd build one with all the straight sections removable with flanged joints. Getting a perfect seal may be tough, but then I could fool around with the lengths till it works best. Nothing I make ever works right the first time- ever. Then again that's the fun of it. Oh and thanks ...
by Heath Daily
Wed Dec 15, 2004 6:15 pm
Forum: Valveless pulsejet forum
Topic: Off-the-shelf Lockwood?
Replies: 6
Views: 2864

Re: Off-the-shelf Lockwood?

Most of the cheap round mufflers used in tractor / industrial applications have a perforated tube that runs right through it surrounded by fiberglass matting. I had planned to cut the tube free from both ends and pull out the stuffing. Just haven't found the right size yet. I was unable to find any ...
by Heath Daily
Wed Dec 15, 2004 7:48 am
Forum: Valveless pulsejet forum
Topic: Off-the-shelf Lockwood?
Replies: 6
Views: 2864

Off-the-shelf Lockwood?

I feel that it would be an excellent idea if a lockwood were designed to be assembled from a grocery list of items which would be easily obtained by those without the means to fabricate them themselves. Such a design would of necessity contain some compromises in the name of using non-optimal parts ...
by Heath Daily
Thu Dec 02, 2004 2:25 pm
Forum: Valveless pulsejet forum
Topic: Looking for a big Lockwood!
Replies: 46
Views: 18382

Re: Looking for a big Lockwood!

They're commonly called AN fittings, but there are slightly different designs that are extremely similar as well. Read here if you want to know more. http://www.parker.com/tfd/fittingsoluti ... TTINGS.pdf
by Heath Daily
Wed Dec 01, 2004 8:31 am
Forum: Valveless pulsejet forum
Topic: Looking for a big Lockwood!
Replies: 46
Views: 18382

Re: Looking for a big Lockwood!

Is that copper?!

I kinda figured the propane would cool it some, but also figured mild steel would be pushing it.
by Heath Daily
Wed Dec 01, 2004 5:54 am
Forum: Valveless pulsejet forum
Topic: Looking for a big Lockwood!
Replies: 46
Views: 18382

Re: Looking for a big Lockwood!

Has anyone considered making a propane "wand" long enough to reach down the intake and a fair ways into the combustion chamber? If you were running off of that, moving it in and out, couldn't you locate the sweet spot fairly easily. Seems like a low hassle way to test various nozzle designs until yo...