Odds and ends

[Mark]

Here's another one just recently made, I was wondering how many Hz it's cycling at, or if the sound would somehow reveal it? It was weird how when I thought to try using a magnet to hold the jumper down, how unexpectedly fast it seemed to run, how peculiarly it suddenly catches the rhythm when I go to start it.
https://youtu.be/KfbRd5LtIxc

And this one just very simple.
https://youtu.be/ZiBcnxdmY7Q

Here's the video that kind of got me interested in jumpers, it's a good video on how to make one and a fair amount of interesting data in French and English.
https://youtu.be/QYZje3YfuO8

[Mark]

Another jumper that was minimalistic.

Easy Balloon Three Piece Stirling Hot Air Jumper
https://youtu.be/B547cKwERzI

[Mark]

A fast one. At the 1:14 mark it appears stretched and frozen for a few seconds.
Speed Test of a Stirling Engine Hot Air Jumper
https://youtu.be/ciHfynKzFE0

[Mark]

A silicone condiment container jumper or making things with odd things.
https://youtu.be/b1KA3NQcQYg
https://youtu.be/WnteuWwNKAw

[Mark]

Another odd thing to use to make a jumper.
Stirling Hot Air Jumper with Sippy Cup Lid
https://youtu.be/SbBvBssQw8M

[Mark]

This is a toothbrush holder I bought long ago thinking it might be useful for a jam jar jet or something but instead this simple three piece engine made by adding a silicone jar lid and some steel wool.
https://youtu.be/qn9DUPrqUVw

[Mark]

Martini Glass Stirling Hot Air Jumper
https://youtu.be/7UkkXHwxR9Q

And a bit faster.
https://youtu.be/PA0hhiqEhFg