Originally Posted by
SJX426
The article describes controling circular eddy current brakes with electro-magnets. Where does the energy come from to control the electro-magnets? You can't be referring to linear eddy current brakes because they are useless at low speeds.
Except for the bit that refers to: "
Adjustable permanent magnet eddy current brake"
In any case, I wasn't suggesting it was or wasn't practical, just that the mention of aluminum in Team Fab's posting was not a mistake.
Perhaps it's time to dissect a magnetic resistance bike trainer and check out the internals...