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Hi All, Speaking of square sections... inspired by Chris I thought I'd try a square valveless (my first jet other than a jar). Don't all laugh at once. I know, I should have made a paper model first. http://www.pgoffline.com/pics/pulse-jet-weld0006.jpg Wilson Logan. I think it looks pretty good. Th...

I was just reading this 5 day of May, 1861 letter and couldn't help notice in some strange way, it mimics the style of writing in this forum somehow - that is, a nonchalant account of the most unusual topics as if discussing the weather. It seems comic and yet sincere. http://www.lateralscience.co.u...

An interesting thing about ignitions is that each kind has a particular strong point and a weak point. Some tie you to the wall, others need batteries, piezos need nothing. Some are hot sparks, some not so hot, some engines don't care, others do. Some take longer to set up and some can run all day o...

Mark wrote:http://cgi.aol.ebay.com/ws/eBayISAPI.dl ... egory=1200

http://cgi.aol.ebay.com/ws/eBayISAPI.dl ... gory=40116

Your consumer advocate at work.
Mark

Hi. I'm playing with this idea for a valve that is parallel to the airflow, in the same sort of way as a Harmonica. The parallel valves would then be stepped up, and back, at some shallow angle to get the required mass flow or opening area. Seeing my daughter play the Harmonic made me think that pe...

More from planes, trains and autos. I have this nagging feeling I saw this idea somewhere and forgot... Original or not, looks fun to try. ;-P I like anything with a vortex, the design reminds me of a Hero's Steam Engine of some sort, only with an in and out effect instead of constant exhaust. Mark

I've been on planes, trains and automobiles a lot this week and had some fun with an idea that might make for long valve life and good augmentation. Easy valve section to make, at least. I'm not sure, what again is the thickness of the paper? LOL What kind of napkin is the intake made out of? (bant...

Hmmm, rocket propelled grenades, I'm sure that's going to go over well with the internet community. I hadn't thought about them much, but I'm sure all terrorists have. Maybe Bruce is working on the design now as well and New Zealand is on his case. LOL
Mark

mk wrote:Yes. If you could get some stainless steel (0.12+-0.03mm) it would be better. You get a lot of valve area unable to use, because of the holes in the razorblades .

Yes, but perhaps you get a sharper sound and shave using razor blades.
Mark

PSS The reason I shot at such a slow speed is that I was shooting at night, sometimes I feel more creative at night, and other times just when I wake up. I use to have a film/motion pictures instructor in college that suggested you try thinking of ideas at odd times, away from your regular schedule....

Maybe we should establish something like Pulsators Anonymous? Oh no, I want to see way more denial from Mark before he is allowed into the 12 step program! And has anyone ever noticed his enablers are little pieces of pipe and flotsam? LOL! OK, some of my designs might seem co-dependent or have pas...

It would be interesting to do a half pulsejet with a windowpane of quartz glass against a Dynajet half. Why even the OS Japanese copy of the Dynajet comes with half reeds, I guess if a reed goes bad, you don't have to replace all ten, just a set of five, if you have seen the OS jet petal valves, the...

Has anybody toyed with quartz glass, pure SiO2? I was reading its melting point is ~1720 C or 3128 F. That's far better than most metals. Seems like it would be an ideal substance for the jam jar crowd. It would be neat to make them with the picture of Reynst pasted on each jam jar. Would be a humor...

I might need help, I am watching a James Bond movie and there was a store scene with jars and skulls on the shelves. I guess it's pretty bad when you start to wonder if a skull could be made into a jam jar. It just crossed my mind seeing the colorful jars and skulls next to each other. I might need ...