You don't. That's because the gyroscopic effect cancels out in that case. But if you use a single spinning wheel you will. I'm just saying that precession isn't

You don't. That's because the gyroscopic effect cancels out in that case. But if you use a single spinning wheel you will. I'm just saying that precession isn't a different effect than the gyroscopic effect; it's a specific case of it. The same forces that cause a wheel to feel like it's hard to turn (i.e. the "gyroscopic effect") cause precession. I asked: > Which other spinning wheel effects? [other than the gyroscopic effect] And he replied: > Precession To which I replied that precession is not a different effect. I did not mean to imply that precession happens when you have two wheels spinning in opposite directions, in fact I believe it does not because the forces that cause a single spinning wheel to precess cancel out if you have two wheels spinning in opposite directions.