youtube

[Mark]

Self-starting and kind of impressive for so simple a design.
mechanical resonator in thermoacoustic (special thanks to SIMI112)
http://www.youtube.com/watch?v=aT-EcIZSgvQ

[Mark]

Magnetic Top
http://www.youtube.com/watch?v=iUmE_oJMA5c

[Mark]

With below the waterline footage. ha
World Smallest Steam Boat "GUPPY". Pop Pop Boat.世界最小の日
http://www.youtube.com/watch?v=Sie0gEOxy8Y

[metiz]

Mark, I love that you keep posting these video's, but do you ever get the feeling that it is a futile effort since there are maybe 4 people still active on the forum?

[Mark]

It is unfortunate that there's so little spirit/curiosity. But I think it's that there hasn't been anything new, something that creates a sense of wonder . Even YouTube for example had a flurry of jam jar videos and now there are zilch. All the eagerness of the early forum has quietly slipped into a cave. I'm sure other science forums have experienced such lulls too.
It's not so much a feeling of futility but rather a challenge for me. There are things I want to try that hold my interest.

[Mark]

UNBELIEVABLE PULSEJET POWERED Lakester worlds only
http://www.youtube.com/watch?v=h1LeMmCDJqw

"I made miniature pulse jet car ver2. I added a cooling tank both side of fuel tank this time. Driving time is improved!"
miniature pulse jet car 2 (with cooler tank)
http://www.youtube.com/watch?v=3eGznd99P_g

[Mark]

Multitrack Cyclotron with Plastic Container Lids
http://www.youtube.com/watch?v=chfH9Jpt9zg

Kinetic Sculpture: Electrostatic Cyclotron Roulette
http://www.youtube.com/watch?v=4qzIhEHW4zk

Electrostatic Experiment: Cyclotron with Escape Hatch
http://www.youtube.com/watch?v=cXr7Rq588QI

[Mark]

Toward the end you can see the design. It's looks like he used two glass syringes. The design really goes fast.
「Mk-Ⅲ」　StirlingEngine　ものつくり大学　　2013　Institute of
http://www.youtube.com/watch?v=Q-JBNzDe4wQ

[Mark]

Jam Jar Stirling Engine. ha
Stirling engine, made from preserving jar.
http://www.youtube.com/watch?v=_Plhldl5G3A

[Mark]

Kind of a nice artistic look
Pulse Jet Square Home Made
http://www.youtube.com/watch?v=f_N0CLgx5Hw

[Mark]

I liked the restarting method around the 1:33 mark. ha
Rocket stove pulse jet 03
http://www.youtube.com/watch?v=OEQE_SKohz0

[Kool]

escaping gas on new mud island sounds like a pulsating jam-jar bottle : http://www.youtube.com/watch?v=Dk7NofzO2zc

http://www.bbc.co.uk/news/world-asia-24272552

[Mark]

Good find there Kool. There are hollow trees fire fighters have seen that make a sound as smoke burns inside them. They are called hooters. It would be interesting to hear one.

[Mark]

Team Abby Normal Presents The Angry Red Head Pulse Jet
http://www.youtube.com/watch?v=Ejkxogg6I-g

[metiz]

From 4:48 to 5:10 you can hear the tone of the engine going up as it gets hotter