Re: [CAD_CAM_EDM_DRO] AC brushless motors

hallo stephan
contact or see at maxon.ch you will find a lot concerning one of the most
sophisticated
coreless motors even used with the mars roboter.
regards from vienna
josef wagner
+++

----- Original Message -----
From: "Stephan Kotze" <skotze@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, October 07, 2004 10:56 AM
Subject: [CAD_CAM_EDM_DRO] AC brushless motors



Dear list

Explain this:
Why are AC brushless motors so expensive? Since they are much simpler
mechanically, no brushes, coils are simpler etc. I fail to see why these
things are so expensive. The whole idea behind AC Brushless was a
sophisticated controller with a very simple and cheap motor. Now, I can
build a AC brushless servo drive for less that $100, but would have to buy a
motor at $$$$, this does not make sense.

Does anyone have a link to cheap motors or a drawing/pic showing what these
motors look like on the inside? I would like to try my hand at building one.

Stephan Kotzé
Johannesburg
South Africa


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