Search found 10721 matches

by Mark
Thu Feb 15, 2018 6:48 pm
Forum: Off topic forum
Topic: youtube
Replies: 1444
Views: 137988

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: 251039

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: 251039

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: 251039

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: 160121

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: 251039

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: 251039

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...
by Mark
Fri Jan 12, 2018 6:04 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 251039

Re: Odds and ends

These frames seem to show some segregation, maybe an interval of duel flow in the neck?
by Mark
Fri Jan 12, 2018 4:24 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 251039

Re: Odds and ends

This is the evolution of the flame and color transition all happening in this one run and brief amount of time. From green to orange to a greenish-blue something or other.
https://www.youtube.com/watch?v=d5MBb3qauQs
by Mark
Thu Jan 11, 2018 8:48 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 251039

Re: Odds and ends

This dog was some sort of lotion or liquid soap dispenser made of very fragile material which cracked easily. Sadly this is all I have of the little barking dog.
Jam Jar Jet Barking Dog
https://www.youtube.com/watch?v=VqhhkjfLQWA
by Mark
Sun Jan 07, 2018 2:10 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 251039

Re: Odds and ends

The Pinch bottle wouldn't sustain so a shorter snorkel was tried which brought it around. It was loud and foolishly I wasn't prepared to stop it but having my lighter in hand, quickly and awkwardly put that in the exhaust but it just slowed slightly and then went back to its speedy self until gettin...
by Mark
Wed Jan 03, 2018 7:20 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 251039

Re: Odds and ends

In other news I decided to crack the seal and pour out a very old bottle of Pinch whiskey and try the shape with a simple press fit 3/4 inch piece of aluminum tubing snorkel. It's pretty lively as far as snorkelers go but I haven't gotten it to sustain at full grease, the flame front nifty loud in t...
by Mark
Wed Jan 03, 2018 4:36 pm
Forum: Off topic forum
Topic: youtube
Replies: 1444
Views: 137988

Re: youtube

Around the 3:47 mark it looks like a brief clockwise circular motion is occurring instead of the typical jam jar torus, and at the neck,
the outflow flame segregating to the right.
The Whoosh Bottle Experiment | in Super Slow Motion!
https://www.youtube.com/watch?v=HcTRapGoHK8
by Mark
Fri Dec 29, 2017 3:05 am
Forum: Off topic forum
Topic: youtube
Replies: 1444
Views: 137988

Re: youtube

I was watching a show on sea snakes last night and this particular sea snake being of terrestrial origin can't lay it's eggs in water. So it lays them in this underwater cave. The neat thing about the cave was that a fog or cloud was generated when the waves created high and then low pressure varia...