In article ,
"G.R. Patterson III" wrote:

Jay Masino wrote:

I suspect it's a lot easier to get a gyro to spin at 10 or 15,000 RPM (or
whatever) using vanes and vaccum, than it is to design a reliable electric
motor to spin the gyro at that speed.

Actually, the main problem is building them small enough. That's what makes
the
electric gyros so expensive.

George Patterson
If you don't tell lies, you never have to remember what you said.

I wonder how long it's going to take for things like ring laser gyros to
become cheap enough for GA use.