Second test but now the plate is more in the gate.

Now the plate needs to be thicker to reach optimal torque it seems. Which is obviously not possible so some tradeoff need to be found. All in all it seems the plate can be thicker than what I saw in the videos.

Quoteauthor=Nali2001 link=topic=19546.msg582042#msg582042 date=1693989486

QuoteDid some simulations on the effect of torque plate thicknesses relative to the magnet.
The Plate is just above the gate in this test.
In all the test the gaps between magnet and plate is the same. The colors don't matter, the important value is the Newton on the Y-component. This is the pull force on the plate.

QuoteThere is an optimal plate thickness and it does matter quite a bit it seems.

I am not a fan of simulators, but it seems to agree with exactly what i said in the videos.
I have been perfecting this motor for that past 3 years, and yes, plate thickness, plate width, gap, and magnet/coil relationship all play a big part in performance.

Can you use the sim to test at different distances - torque plate to gate distances, and then the same using a coil attracting a magnet, such as i did in my pull force comparison test. Would be good to see the results of the simulated test, say from 20mm away as a starting point, to say 2mm away from the PM/coil, at say 2mm increments.

Brad

Quoteauthor=Nali2001 link=topic=19546.msg582043#msg582043 date=1693989688

QuoteSecond test but now the plate is more in the gate.
Now the plate needs to be thicker to reach optimal torque it seems. Which is obviously not possible so some tradeoff need to be found.

This depends on what type of flywheel you use.
The reason you need a thicker plate in the gate, is because a thinner plate will become saturated with the magnetic field-also mentioned in the videos. If you run your sim again, but have a large mass of steel to replicate the large steel flywheel, you will see that you can reduce the thickness of the torque plate.

QuoteAll in all it seems the plate can be thicker than what I saw in the videos.

It can be, but then you end up with the PM and coil gap becoming larger, reducing the combined field concentration.
Add the large mass of steel to imitate the flywheel, and you will see you can reduce the thickness of the torque plates, and achieve the same pull force.

Brad

Will you release videos and plans of the "working" motor? Thank you.

Quote from: wopwops on September 06, 2023, 12:43:36 PM
Will you release videos and plans of the "working" motor? Thank you.

These are the build plans.
My shop built prototype is very much the same, only the flywheel and torque plates are all one piece, and lay horizontal.