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Mark
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Re: youtube

Post by Mark » Tue Jul 30, 2024 9:19 pm

Presentation is Everything

Mark
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Re: youtube

Post by Mark » Mon Aug 05, 2024 8:29 pm

SKYMECHMAN Building A Gasoline Gatling 4.4 Pound Thrust Pulse Jet Engine RTR
https://www.youtube.com/watch?v=k9FdN2cnh6A
Presentation is Everything

Mark
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Re: youtube

Post by Mark » Tue Aug 13, 2024 9:00 pm

This motor brought to mind my little wheel motor which also uses expansion and contraction to propel objects.
Piezoelectric motor
https://www.youtube.com/watch?v=uFZsH62ewYo
Little Wheel Motor
https://www.youtube.com/watch?v=9jKUXVG8duE
Or this ...
https://www.youtube.com/watch?v=Se1hlK7twzc
Last edited by Mark on Tue Aug 13, 2024 9:02 pm, edited 2 times in total.
Presentation is Everything

Mark
Posts: 10945
Joined: Sat Oct 11, 2003 10:14 pm

Re: youtube

Post by Mark » Tue Aug 13, 2024 9:00 pm

Double post
Presentation is Everything

Mark
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Joined: Sat Oct 11, 2003 10:14 pm

Re: youtube

Post by Mark » Mon Aug 19, 2024 1:44 pm

Maybe the first solar-powered putt-putt boat - no moving part - no candle - raw footage.
https://www.youtube.com/watch?v=IlfabA4Sv8o
Presentation is Everything

Mike Everman
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Re: youtube

Post by Mike Everman » Tue Sep 10, 2024 3:40 am

Cool. I’ve always wanted to make a biggish puttputt
Mike Often wrong, never unsure.
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Mark
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Re: youtube

Post by Mark » Tue Sep 10, 2024 8:53 pm

Mike Everman wrote:
Tue Sep 10, 2024 3:40 am
Cool. I’ve always wanted to make a biggish puttputt
In part it seems like a question of balance, matching the exhaust tube and chamber volume to harness the effect. And surface area ...
https://www.youtube.com/watch?v=bDItSUeykrA
Small ones are interesting too, I wonder just how small you could make one?
https://www.youtube.com/watch?v=8vKvYuzSeXg
Presentation is Everything

Mark
Posts: 10945
Joined: Sat Oct 11, 2003 10:14 pm

Re: youtube

Post by Mark » Mon Sep 30, 2024 7:20 pm

Cutting mirrors with Diamonds
https://www.youtube.com/watch?v=ZPTFFPLOzCw
Presentation is Everything

Mark
Posts: 10945
Joined: Sat Oct 11, 2003 10:14 pm

Re: youtube

Post by Mark » Mon Oct 21, 2024 7:38 pm

And now for something completely different
Rock Salt Moving on Aluminum
https://www.youtube.com/watch?v=kuxJptidqsQ
Presentation is Everything

Mark
Posts: 10945
Joined: Sat Oct 11, 2003 10:14 pm

Re: youtube

Post by Mark » Thu Nov 07, 2024 11:20 pm

Just an odd thing to try
Tequila Salt Shot Glass Wobble
https://www.youtube.com/watch?v=_jeEsPB9lKs
Presentation is Everything

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