magnetic gearing

[jeffh]

Has anyone played with magnetic gearing?

[Bruce S]

Could you elaborate?
There was one post, a few years back where a gent went about using magnetics to link equipment gearing that HAD to stay dry yet needed saltwater safe external propulsion.
IF WooferHound wasn't to busy this time of year, he would be able to find it quicker than I ever could.
BUT if that's what your asking about I can do a search, you can as well :-).
IF not please more info sir! 

[jeffh]

thank for your response, working on some concepts 3 to1 gear ratio's. Current commercial products are over priced. Magnadrive, Magnet Power Transmission, Magna Force are a few that are other there. I want to gear a  wind turbine and are wondering if I can use this same tech. using rotor discs as gearing. The concept of gears that don't touch, vibrate, or need fluids intrigues me.

[electrondady1]

windstuff ed posted "popcorn generator" or some thing like that .
way back.
 i did am experiment  with a 14" mag rotor disk with 32 poles .
i attached a single magnet to the shaft of a little dc motor and supported it so that when i rotated the 14" mag rotor, the little dc motor could rotate 1/2 a turn for each pole
 i guess that was 16 to one overdrive.
i never tried the other way, to power the little dc motor and get it to rotate the big disk.

[joestue]

The amount of magnets required to make the gearbox would exceed the volume required for a direct drive alternator.