It doesn't work if you try to use the other hand for the second gyro! I need two right hands.

> It's a pretty simple explanation, as long as one avoids depth.
> Remember your right hand rule for electricity and how forces work
> in the windings of motors and such? You can use the same rule basically
> for gyroscopes.

> Take your right hand, make a fist, and admire your fingernails.
> Now stick out your thumb. Now stick out your index finger. Not that
> one! Don't give people the bird, they'll get upset. There's your gyroscope.
> It's spinning about your thumb (axis) in the direction the fingers
> are pointing. If you now try to twist your fist gyroscope towards
> you (thumb pointing towards your face), the end will push up in the
> direction your index finger is pointing. Try to twist the other way,
> and the gyroscope fist will push the other direction. Reverse the
> rotation, and the forces of course reverse. Which is why two matched
> counter rotating gyroscopes cancel out the gyroscopic forces of each
> other. Not the forces of mass or inertia, just the gyroscopic forces.
>

> Which should also now be giving you a clue about how a bicycle
> or motorcycle wheel could not be helping stability. For as you fall
> over, the slight gyroscopic effect shoves you forward or backwards,
> not back upright.

> Last point as it relates to kayaks. Lets assume you did install
> a full ship-steadying gyro. In a kayak, you'd regret it I believe.
> It's fine on a ship that has a nice tall hull to deflect the waves
> that the ship is now cutting through instead of riding up over. You
> don't have that much hull with a kayak. You'd find yourself soaked
> and exhausted, torpedoing through waves instead of bobbing up over
> them.

> Turning would become very difficult as you would not be able
> tip the boat to change water line and effective chine.

> Lastly, if you turned turtle, you'd never be able to roll it
> back upright.