Search found 10760 matches

by Mark
Mon Oct 14, 2019 10:04 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1716
Views: 327971

Re: Odds and ends

I bought one of these witch glass milk bottle jars today for 69 cents at a thrift store. These have always taunted me because they seemed potentially a no-build jam jar jet par excellence. The height is about 4.6 inches or 118 mm. The lid 2 inches in diameter or 50 mm. When the silicone grommet is r...
by Mark
Tue Sep 17, 2019 7:22 pm
Forum: Off topic forum
Topic: Nature's Children
Replies: 698
Views: 185929

Re: Nature's Children

Fused quartz jam jar jet hummingbird feeder
by Mark
Sun May 12, 2019 5:10 pm
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Simple Bottle Rocket Launcher (Propane)
https://www.youtube.com/watch?v=iiH1l3zTSaQ
by Mark
Sun Apr 21, 2019 2:18 am
Forum: Off topic forum
Topic: Luc's Back ... ;-)
Replies: 5
Views: 794

Re: Luc's Back ... ;-)

Welcome back, funny how an interest in pulsating combustion/creativity and imagination comes and goes. I have a lot of stuff accumulated and wonder if the mood will ever strike again to experiment with my materials gathered over time.
by Mark
Sat Mar 30, 2019 1:35 am
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

World's First? Lennox Pulse Jet made from a furnace
https://youtube.com/watch?v=fAQ7sMl_41g
by Mark
Sat Mar 16, 2019 3:57 pm
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Maybe of interest, be nice to have for some projects.
Drill through anything (conductive) with Electrical Discharge Machining
https://youtube.com/watch?v=rpHYBz7ToII
by Mark
Thu Feb 07, 2019 6:19 pm
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Skip to around the 2:30 mark and listen when the engine cuts out, the quiet whistling sound as the plane cuts through the air and stunning landing.
https://youtube.com/watch?v=eqM__cZmM48
by Mark
Sun Jan 20, 2019 3:25 pm
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Some creative designs in putt putt boats, although kind of a sad back story.
https://youtube.com/watch?v=1yYVHfbxK9g
by Mark
Mon Jan 14, 2019 6:00 pm
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Someone made a pulsejet out of a reed, like one of the ones I have but never got around to using, pictured next to my red Dyna-jet head here.

download/file.php?id=14630&mode=view

Valved pulsejet
https://youtube.com/watch?v=B2DEpeDj2t8
by Mark
Thu Dec 20, 2018 2:40 pm
Forum: Off topic forum
Topic: Nature's Children
Replies: 698
Views: 185929

Re: Nature's Children

Even babies can startle you.
Electric Eel babies
https://youtube.com/watch?v=C4D2xFI5RPA
by Mark
Tue Oct 16, 2018 3:27 pm
Forum: Off topic forum
Topic: Left field
Replies: 599
Views: 91872

Re: Left field

This fellow even created nostalgic model toy kits to go along with the pretense. Seems like something Larry C. would have liked, he was into retro stuff I recall. Definitely a surreal left field endeavor - Project Wool Over Your Eyes. The ammo box with the RAYOVAC battery and accessories hurts my he...
by Mark
Sat Oct 06, 2018 12:22 am
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Thermoacoustic Heat Engine from Syringe. Part 2 (generator)
https://youtube.com/watch?v=rh78vsyGwXI
by Mark
Thu Oct 04, 2018 1:11 am
Forum: Off topic forum
Topic: Nature's Children
Replies: 698
Views: 185929

Re: Nature's Children

Starting around the 5 minute mark the video becomes quite worrisome and horrifying off the coast of Australia.
Drowning in Plastic
https://www.dailymotion.com/video/x6uk7h5
by Mark
Tue Sep 25, 2018 5:15 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 124324

Re: Mike's Build Log

That looks like a nice pickle slicer. I looked for various steel/heat resistant impellors to spin up but never found anything suitable or low cost.. But the jet ski prop idea seems like something fun to try. Is that a skateboard wheel on the end of the shaft? As an aside, I bought a few sets of whee...
by Mark
Tue Sep 18, 2018 2:34 am
Forum: Off topic forum
Topic: youtube
Replies: 1460
Views: 189619

Re: youtube

Here's a curious fire tornado vs fire hose. Somehow in an abstract way I imagined a jam jar jet effect without the jar, the fuel cellulose instead of methanol and a chimney feedback effect without the chimney. Although the flow is more of a steady state, the center fire vortex might have resonate pr...