Let's Make Robots!

gyroscope source recommendations?

Hi all, searching the site didn't give me much on gyros aside from the MEMS gyro sensors.  I'm interested in good old fashioned spinning chunks of metal :-).  I guess these could also be called flywheels, though ultimately I'm aiming for a gimbal mount active gyro.  Anyone work much with them in robotics projects?  

I'm designing a robot and trying to get a handle how much help they can provide to balance something tall and heavy... e.g. if I use a 20lb gyro at X RPM how much torque could it provide, etc.  

At this point I'm just curious how to find a good source for one - google isn't much help with all the gyro chips used in electronics these days mudding the search results :)

Anyway, thought y'all might have some ideas.


P.s. Yes I know it's hard/awkward/expensive/silly etc so don't need to be talked into MEMS approach - but thanks! ;)

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Thanks for the tip and suggestions guys. It's partly curiosity to try the mechanical approach of course :). More to come as I get my hands dirty... Keep comments coming, though I'm not interested in solid state approach .. At least not in this thread. TJ
FYI some inspiring gyro research for biped turning control: http://www.me.utexas.edu/~lsentis/files/gyro-asme-design.pdf Video on YouTube for gyrobot I think... And yet another robotics crew in Austin using control moment gyros.. Awesome, anyone know them? :) http://www.awesomefoundation.org/en/projects/20483-control-moment-gyroscope-for-robotics What is it about Austin??