Jolle wrote: ↑
Fri Feb 21, 2020 8:12 pm
The normal state of a motorbike is straight on standing up. In a corner it takes effort to stay in the curve. The gyro effect of wheels take care of that.
Modern(ish) bikes look to turn in quite well trough well balanced geometry, although the big sport bikes with their ultra wide tires, take quite a bit weight shifting to have a steady corner.....
I hope that the following doesn't sound like any disagreement ....
the gyroscopic moment is a tiny fraction of the 'toppling' (due to lean angle) moment
ie 2 - 4 deg of extra lean was required to 'overcome' the gyroscopic moment
according to Royal Enfield's (Tony Wilson Jones) tests c. 1959
gyroscopic moments can be regarded as dampers in roll - and in yaw
Moto GP machines etc have reduced gyroscopic moment in choosing engine rotation direction opposite to wheel rotation
'effort to stay in the curve' is determined by steering geometry including front (and rear) tyre geometry
results opposite to the above ideal are possible
I still don't understand the OP's question
or some of Moto GP machine behaviour seemingly apparent on a normal lap