Odds and ends

[Mark]

Here's a repost of a V-2 engine "spooling up". Sounds energetic.
Mark
http://youtube.com/watch?v=uX5dk8tQOAU

[Irvine.J]

http://www.youtube.com/watch?v=Z7S_QgE5MN8
Pretty funny really. I'll remember not to run behind a 747 without a helmet.

[thecheat]

here's a pretty small Valveless PJ! Reminds me of someone pinching the neck of a balloon and making it squeal...

http://video.google.com/videoplay?docid ... ejet&hl=en

[Mark]

Seems like with acetylene you could just use a short length of straight tubing and try to get it to build feedback, something akin to a "jam jar tube" if you will. With such short distances to refresh/breathe into, perhaps a single in/out hole would be ample.
Mark

[hagent]

here's a pretty small Valveless PJ! Reminds me of someone pinching the neck of a balloon and making it squeal...

http://video.google.com/videoplay?docid ... ejet&hl=en

That's the smallest Chineese I've ever seen.

You would think that someone would have told him not to stand infront of the camera.

[Mark]

It's interesting how it looks as though you can see through the red hot metal and see the spark plug tip and all.
Mark

[Mark]

http://www.wolfhart.us/
http://youtube.com/watch?v=gcZKL_vrw3g
http://youtube.com/watch?v=m8tLSJ39Mm8
http://youtube.com/watch?v=CuKJqzFjlog
http://youtube.com/watch?v=AZQqM3swDd0
http://youtube.com/watch?v=VIZQqHMXHVU

[Mark]

http://www.adthree.com/engine/

[Mark]

http://tinyurl.com/y2x3sm

[Mark]

Ornithopters
http://youtube.com/watch?v=a-qS7oN-3tA
http://tinyurl.com/y9rgkf

[Mark]

http://delphi.com/images/ppd/pwrtrn/dsl ... f_sys2.jpg
http://tinyurl.com/yzn5qf

[Jim Berquist]

Mark:

Ornithopters:

It looked like the manned unit lost control due to mechanical failure and or power.

The R.C. unit did it's thing and was most cool.

Hard to believe that the Idea came so long ago from a man that just wanted to fly, like a bird.

Don't you find the Net Amazing!!!!! who keys in all of this information?

It has gotten to the point of the world wide brain.....

Jim

Jim

[Mark]

http://www.u3kenergy.com/

[Jim Berquist]

I find that wild as Urea can be readily converted into a oxidizer to make things go boom and or zoom!!!!

Jim

[marksteamnz]

I find that wild as Urea can be readily converted into a oxidizer to make things go boom and or zoom!!!!

Jim

Jim
Urea is NOT Ammonium Nitrate (thats the oxidiser / boom one)