Comments on: Electrostatic Motors are Making a Comeback https://hackaday.com/2024/10/29/electrostatic-motors-are-making-a-comeback/ Fresh hacks every day Wed, 30 Oct 2024 02:23:33 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: paulvdh https://hackaday.com/2024/10/29/electrostatic-motors-are-making-a-comeback/#comment-8056242 Wed, 30 Oct 2024 02:23:33 +0000 https://hackaday.com/?p=729714#comment-8056242 Near the bottom of the article:

At 1.5 T, a field achievable with iron, the theoretical magnetic shear limit is 1.79 MPa or 260 psi. At 3 kV/mm with atmospheric conditions, the theoretical electric shear limit is 79.65 Pa or 0.012 psi, a ~4 orders of magnitude deficiency for electrostatics compared with magnetics

And apparently nobody ever built a bigger motor then about 75Watt and an efficiency of 50% These are not going to replace big motors anytime soon. I’d be curious to see (niche?) applications where these motors are a good fit though.

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