Centrifugal forces

[spamanglenn]

So why did yamaha reverse the direction of their engines rotation and state that it improved manouverability but reduce straightline stability in moto gp.If the crankshaft is parallel to the axles and the stroke has a swept diameter of at least 100mm and its spinning at high rpm,how would this differ from a wheel at a few hundred rpm?.One has a smaller radius but high rpm,one has a large radius and lower rpm.I may have the terminology wrong but there is definately a force there.Rotational inertia upon acceleration and deceleration is also quite real.Don,t you remember revving your engine in your car in nuetral.As you revved it the motor leant to one side and mildly rocked the car.I,m open to being wrong though.Perhaps if you could measure the effort required to vary the angle of lean at a predetermined speed of change of angle on a stationary bike.Then rev it in nuetral and repeat the test.If there is more effort to acheive the change in lean at the same speed,gyrocopic force is having an effect.If the effort required is the same,engine gyroscopic force has no effect on the bikes change in direction response.I suppose 530 to 520 chain sets is another significant weight moving at high speed as well.Its all interesting. <i></i>