On 20 Jan, 13:43, "vaughn" wrote:

* *This is getting rather far afield and has little or nothing to do with
flying, but turning a motorcycle is not as simple a process as you may
think. *Those who have any time on heavy motorcycles instinctivly apply
pressure to the handlebars OPPOSITE to the direction of the intended turn..
Because of the gyroscoptic precession of that big, heavy front wheel, this
tilts the bike, and it is the tilt that does the actual turning.

Humm. Bike going forward. Rotation vector of front wheel goes right to
left (using right-handed axis system). Push left handlebar forwards.
Front of rotation vector moves forwards. Precession vector is change
in rotation vector: front to back. Which is a roll to the right.

In other words, the affect of precession would roll in the direction
of steer.

Ian