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Old 11-12-2012, 07:13 PM   #465
Tracks1
Arctic Rider
 
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Joined: Jul 2012
Location: USA West Coast
Oddometer: 95
Quote:
Originally Posted by just jeff View Post
It has also been theorized that excessive unintentional operator input forces increase the oscillations to a point of control failure. The solution advised is to LOOSEN UP ON THE BARS AND RIDE IT OUT. Not easy to do in a panic situation.
Regards....just jeff
I agree if the bike is in the tested stock configuration. However, having moved the CofG aft and thereby reduce the Margin (distance between the CofG and the Neutral point) will lower the speed of oscillation onset and increase its magnitude. It needs an increase in the Margin and a Damper. Fey was fine until the new Head Bearings were installed which reduced the steering friction. There is also the rear steering aerodynamic effect of the radius'd panniers in a cross wind gust.

If I recall correctly, Fey made a comment about how the bike was easier to turn after loading it with all of her gear. This is an indication of reduced Margin and lower stability.

Rule for dirt tires on hard surface roads...slow down or you will crash.

Rule for street tires on soft surface roads...slow down or you will crash.

Cheers,
David
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