Search found 10728 matches

by Mark
Thu May 31, 2018 7:28 pm
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

3D print your brain, timelapse, high-res microfluidics, custom colors...
https://youtube.com/watch?v=7Z8uPHL52Q0
by Mark
Sun Mar 25, 2018 1:29 am
Forum: Valveless pulsejet forum
Topic: Glow plug can start pulsejet?
Replies: 6
Views: 2936

Re: Glow plug can start pulsejet?

1968 I had a small hobby pulse jet engine smaller than the Dyna Jet Engine it used a model airplane glow plug to get it started. It had a place on the nose of the engine to connect a model airplane fuel line to a model airplane fuel tank. The engine ran on model airplane fuel. The engine came with ...
by Mark
Thu Mar 22, 2018 2:31 pm
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

Interesting little vortex rings from leaks in the tailpipe.
Looking down a Pulse Jet Engine as it runs.!
https://www.youtube.com/watch?v=itzXhntGolc#t=42s
by Mark
Wed Mar 21, 2018 10:28 pm
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

"Could not even maintain level flight"
Pulse jet glider - the 1955 Bocian Puls [Vintage Sky]
https://www.youtube.com/watch?v=MXKe1erYRDY
by Mark
Sun Mar 11, 2018 4:10 am
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

I liked the inventive airing out method and the young teamwork and simple design using rocks in the second clip.
https://www.youtube.com/watch?v=hCdYExezMhU
https://www.youtube.com/watch?v=lIuj3gr8mgs
by Mark
Sun Mar 04, 2018 7:13 pm
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

Might be exciting to try a jam jar jet at 2.5 atmospheres.
Opening a Soda on the Ocean Floor
https://www.youtube.com/watch?v=EJiUWBiM8HE
by Mark
Sun Mar 04, 2018 3:40 am
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

See if you can spot something funny.
Os pulse jet
https://www.youtube.com/watch?v=H4A4Qn4pInU
by Mark
Thu Feb 15, 2018 6:48 pm
Forum: Off topic forum
Topic: youtube
Replies: 1450
Views: 147540

Re: youtube

Kind of a Logan look to it. Not wild about breathing smoke though, but interesting for a home-built and for the fact that it looks like a "working" pulsejet rather than recreational. Home made PULSEJET Pulse jet engine Completion of smoke mist Katsuhiro Amemori https://www.youtube.com/watch?v=ACv3wL...
by Mark
Tue Feb 13, 2018 3:54 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 268790

Re: Odds and ends

That Norwegian thesis had some fun facts to ponder over. Funny that substituting one relatively inert gas for the other can make such a difference as when they switched the nitrogen to helium for example and that hydrogen doesn't produce as much pressure piling as a slower fuel. I noticed on this ca...
by Mark
Fri Feb 09, 2018 12:14 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 268790

Re: Odds and ends

So just a quick demonstration of the genie in a brass bottle effect or the sudden propagation of a flame front ...
Candlestick Holder with Methanol
https://www.youtube.com/watch?v=JfsXKl_TZ7c
https://www.filmous.com/static/photos/44774/4_midi.jpg
by Mark
Wed Feb 07, 2018 2:59 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 268790

Re: Odds and ends

Out of curiosity, these hollow brass candle holders that were going to be throw out were spritzed with methanol and lit at the narrow end via a threaded hole that held the "wax catcher" cup part on. The threaded hole accepted or matched well enough a typical spark plug thread and aside from that the...
by Mark
Mon Feb 05, 2018 3:14 am
Forum: Off topic forum
Topic: Nature's Children
Replies: 691
Views: 164266

Re: Nature's Children

A lot of beauty in this one.
Forgotten Island
https://www.youtube.com/watch?v=MNjoXlVocGg
by Mark
Sat Feb 03, 2018 3:10 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 268790

Re: Odds and ends

I see there are some funny new aluminum bottles out there. https://www.youtube.com/watch?v=ljtff-5Wdk4#t=61s http://420living.com/wp-content/uploads/2014/07/dixie-one-watermelon-cream.jpg http://www.abcchapter.com/bottles/soda/us/images/keef%20bubba%20kush%2010%20al%20v2.jpg https://www.youtube.com/...
by Mark
Thu Feb 01, 2018 2:13 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 268790

Re: Odds and ends

I used to turn my nose up at a lot of glass bottles thinking what's the point in fragile glass that will fail in short order. But I guess any shape has the potential to teach you something or suggest other ideas. It's very easy to get stuck in a rut or to run out of ideas. Jam Jar Jet Bell Jar for P...