"Ron Natalie" wrote

The advantage a turn coordinator has is that the gyro within doesn't
need to be free in space. It's axis barely changes, which means
it's much easier to direct drive with an electric motor. It only
needs to register a slight precession force.

Interesting. I didn't realize that was the reason. I still have to ask.
Why are the damn things so much more expensive than their vacuum powered
brethren? An electric motor just should not cost that much more!
--
Jim in NC