Landing Roll-Out Stability

[MikeOH]

So, looking at the diagram in the SB, it is not clear to me which way the shim/collar affects the castor. Does thicker increase or decrease the 'gap'?

[EricJ]

1 minute ago, MikeOH said:

So, looking at the diagram in the SB, it is not clear to me which way the shim/collar affects the castor. Does thicker increase or decrease the 'gap'?

Increasing the thickness of the spacer under the collar (or turning the thick side of the collar to the bottom) pulls the donuts further into compression, which moves the wheel axle toward the tail of the airplane and increases the caster angle. 

[amillet]

Lake Aero did this on our J in 2008

[John Mininger]

8 hours ago, EricJ said:

Increasing the thickness of the spacer under the collar (or turning the thick side of the collar to the bottom) pulls the donuts further into compression, which moves the wheel axle toward the tail of the airplane and increases the caster angle. 

Very well said!

[cliffy]

Folks !  By far more importance than the collar is how sloppy or lose the articulating steering pieces are up in the nose well.

"8 SECOND RIDE" again!! 

If those parts are worn you'll dart all over the runway

Lift the nose wheel off the ground and see how loose it is in turning (at the nose wheel), If it goes more than a few degrees  L or R

repair the top linkage. 

[Shadrach]

On 9/2/2022 at 10:11 PM, laytonl said:

Don’t mean to hijack this thread, but I need to order donuts for my ‘92J.  Anybody got a good source?  Lee

Try Herber Aircraft 

https://www.herberaircraft.com