REFLECTOR: Nose Wheel castoring while taxiing

[Brian Michalk]

Does anyone know what the shore hardness of the new bumper is?

Alternatively, does anyone know what rake deflection we are looking for 
given a known torque applied to the nose wheel strut?

On 3/6/2012 12:47 PM, Brian Michalk wrote:
> Since we are on the subject of the nose gear bumper:
>
> I already related to the group that I did more taxi testing this 
> weekend.  I have two squawks to address.
>
> The first is the draggy brakes, that is in a different thread.
>
> The second is what I think is excessive nose gear rake.  I measured 
> the angle of the gear, and it's at 6deg.  The manual calls for 2 to 4 
> deg.  The symptom is that when I make a hard turn, the wheel castors 
> to about 90deg, and with the rake, the nose drops a bit.  Then, 
> getting that wheel back in trail to taxi straight requires some power 
> and skill, because the nose must be lifted back up an inch or two to 
> get the wheel back in trail.
>
> Does the new bumper add any thickness?  The one I have came from the 
> RRL trainer plane, and looked fine.  My plan was to add some spacers 
> to mine to get the rake back within limits.
>
> Or should I even bother with this?  Right now, I have zero tension on 
> the castoring to make it easier to taxi.  This problem will get worse 
> when I tighten it up for first flight.
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