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I find telescopic crane boom internals interesting because they can have more than a few sections that all nest within each other. There's an Australian channel
by burnt-resistor 1y ago
I find telescopic crane boom internals interesting because they can have more than a few sections that all nest within each other. There's an Australian channel CEE that has an ongoing restoration of a Frena crane by disabling some of the sections as unnecessary for practical use because it can place loads way, way into the air (albeit at the expense of capacity and stability).
- Gravityloss 1y agoThe Stem Boom is another somewhat mind bending mechanical idea. You have a roll that when opened, creates a boom. This can be very small when stored and very long when unfurled. Or two rolls that together form a boom. https://ntrs.nasa.gov/api/citations/20170003919/downloads/20170003919.pdf https://ntrs.nasa.gov/api/citations/20170003919/downloads/20...
- mitthrowaway2 1y agoA similar mind-bending idea is the helical band actuator: https://en.m.wikipedia.org/wiki/Helical_band_actuator https://en.m.wikipedia.org/wiki/Helical_band_actuator https://www.pacospiralift.com/solutions/spiralift-solutions/ https://www.pacospiralift.com/solutions/spiralift-solutions/
- Gravityloss 1y agoThanks, this is the mind-bendiest of them all, had never heard about it!
- chii 1y agoanother good video is this channel, which explains exactly how a telescoping boom works in somewhat detail (using a standing desk as an example: https://www.youtube.com/watch?v=UVTDMO7rlhs https://www.youtube.com/watch?v=UVTDMO7rlhs