Search found 10753 matches

by Mark
Wed Oct 29, 2003 5:33 pm
Forum: Valved pulsejet forum
Topic: Buy your free pulsejet plans on eBay
Replies: 10
Views: 6009

Re: free plans on Ebay

I've spent over a thousand I bet on just ignition experimentation and devices, but by dang, I've tried to touch on everything that sparks or ignites fuel, and I have little to show for it except experiences and memories of being shocked and other startling miscalculations. 2 new buzz coils 2 Enco 10...
by Mark
Wed Oct 29, 2003 12:40 am
Forum: Valved pulsejet forum
Topic: Buy your free pulsejet plans on eBay
Replies: 10
Views: 6009

James, the guy selling the pulsejet plans on ebay, has ammended his listing to clarify the (in)ability for these engines to power a kart. I guess people can make their own minds up now and if they want to pay good money for something they can get for free elsewhere then it's caveat emptor I guess. ...
by Mark
Sat Oct 25, 2003 7:39 pm
Forum: How to improve this site
Topic: Off topic forum The sequel!
Replies: 9
Views: 4717

hey all! kenneth i no i have asked for this befor but can we have the old off topic forum up for reading purposes only? if hosting is a problim i might be able to helpn there! thanks Stephen I suspect a few good ideas were contained in the old off topic forum, I kind of agree with Stephen, and I su...
by Mark
Sat Oct 25, 2003 5:09 pm
Forum: Valved pulsejet forum
Topic: Clam baker
Replies: 18
Views: 11335

Re: Clam baker

There is a pulsejet you can look at for sale on eBay. Just type the word "pulsejet". I think it might be a Katydid, or about the same size. It's all of 30 pounds and produces 110 lb static thrust. Ok, all you terrorists, buy it now. Mark Going once, going twice, going three times now. Get them whil...
by Mark
Sat Oct 25, 2003 1:49 am
Forum: Off topic forum
Topic: Rand Cam engine
Replies: 9
Views: 5030

Re: Big putt-putt

Mark, I think we've had it in the forum before. It is a grown-up version of the putt-putt toy boat engine, done by the guy who actually started with those toys. The thing was tested on real-life boats, too, with some success. It worked well, but it just isn't that much better than the stuff people ...
by Mark
Sat Oct 25, 2003 1:22 am
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 5982

One thing to watch though Bill, is that the 4-tube LH (ie: Kentfield) has (by the time you take those four intake tubes and the turbulence they produce into account) a rather high cross-sectional area and is aerodynamically "dirty". This means that at high-speeds you'll be wasting a lot of power si...
by Mark
Fri Oct 24, 2003 11:28 pm
Forum: Valved pulsejet forum
Topic: Scam Alert !!!!
Replies: 2
Views: 2559

Re: Scam Alert !!!!

Awhile back, I asked at the old forum if anyone had built the pulsejet from plans located at; http://members.aol.com/Youcanbuildit/ENGINES/Webpage2.htm Herc Designs, look down the page for the "NOVA 2". I can't remember the various answers and I can't find the thread on the old site, but some peopl...
by Mark
Thu Oct 23, 2003 10:00 pm
Forum: Off topic forum
Topic: Rand Cam engine
Replies: 9
Views: 5030

Jesus, is there any way to slow down the pesky animation? My head spins. Offhand, it looks like a version of a vane-type compressor, but there's obviously an additional twist in there. Bruno Don't know if this has been posted before, but here it is, a squidly looking water pulsejet. http://www.delp...
by Mark
Tue Oct 21, 2003 10:14 pm
Forum: Valved pulsejet forum
Topic: Clam baker
Replies: 18
Views: 11335

Pieter van Boven wrote:I think he didn't sell his first pulsejet. The bidding stopped at $830 and I think he wants more for it.

Pieter.

Looks like the first one went for more than I could afford.

http://cgi.ebay.com/ebaymotors/ws/eBayI ... 2437008667
by Mark
Tue Oct 21, 2003 4:24 am
Forum: Valved pulsejet forum
Topic: Clam baker
Replies: 18
Views: 11335

I think he didn't sell his first pulsejet. The bidding stopped at $830 and I think he wants more for it. Pieter. Maybe you are correct, I followed it to the last day but not to the last minute. I was talking to Don Laird today, he drew the Dynajet drawings you sometimes see, and he said this engine...
by Mark
Tue Oct 21, 2003 4:07 am
Forum: Valved pulsejet forum
Topic: Pulse jet problems
Replies: 4
Views: 3576

Re: My pulse jet

Dear Mark, always when I start my pulse jet it starts to run but then some air comes out from the venturi and stops, are my pulsejet valves to small ??? It's really hard to say what could be the matter without seeing what you are working with. Maybe your valves aren't getting closed fast enough and...
by Mark
Mon Oct 20, 2003 5:14 pm
Forum: Valved pulsejet forum
Topic: Pulse jet problems
Replies: 4
Views: 3576

Re: Pulse jet problems

I wrote something about my pulse jet last week and this weekend my pulsejet run but under air suply. My pulsejet starts to run but then I can't stop the air suply with some pressure, over the flowinjector. I think I need more gasoline to run the pulsejet!!!! If that is the case, watch the fuel line...
by Mark
Mon Oct 20, 2003 2:21 pm
Forum: Valved pulsejet forum
Topic: Ba-da boom
Replies: 5
Views: 3369

Re: Ba-da boom

>When my brother brought over his Nov. issue for me to see, I noticed it was the same conception as the elderly man in the wacky pants standing next to it in some previous topic this forum had featured. The "elderly man" in the picture is none other than Burt Rutan's brother Dick, who piloted the V...
by Mark
Mon Oct 20, 2003 1:57 am
Forum: Valved pulsejet forum
Topic: Ba-da boom
Replies: 5
Views: 3369

Ba-da boom

That's the title of an article in Air and Space's magazine Nov. 2003. It has the 4-tubed wonder, a General Motors Quad 4 cylinder head that controls the flow. Two truck superchargers are driven by a two-stroke engine. The article says don't try to buy any Quad 4's in any Dayton area junkyard, becaus...
by Mark
Sun Oct 19, 2003 8:09 pm
Forum: Valved pulsejet forum
Topic: Clam baker
Replies: 18
Views: 11335

I think he didn't sell his first pulsejet. The bidding stopped at $830 and I think he wants more for it. Pieter. Maybe you are correct, I followed it to the last day but not to the last minute. I was talking to Don Laird today, he drew the Dynajet drawings you sometimes see, and he said this engine...