Re: [PSUBS-MAILIST] Pressure compensation

[David Buchner <buchner@wcta.net>]

DBlake wrote [of This idea of magnetic coupling]:
>Why not we
>investigate this technology to the fullest extent possible?  With over a
>hundred psub members, we could collectively overcome almost any obstacle.

Resistance is futile.

Seriously, how does this magnetic coupling work? Is the whole motor inside, and then there's a magnet on the end of the shaft which turns a magnet outside the housing attached to the propellor? Or does it work like an aquarium pump I used to have -- which had the staionary magnetic coil part of the motor sealed in epoxy inside the case, with the case "donut" shaped so that it wrapped around the shaft on the out/water-side of the case?


>Then isolate your grounds.

What does that mean, exactly?




-- 
David
Osage MN USA
buchner@wcta.net - http://customer.wcta.net/buchner