All with trigear: I mentioned in my brief report on my first flight
yesterday that I experienced shimmy in the nosewheel on touchdown, and
assumed that I had loosened the castle nut on top too much.
What I found today was that the force required to turn the nosewheel was
only abt. 7 lbs vs 18-20 as recommended in the Builders Manual . Main
reason: The whole top surface of the friction disk was covered by grease -
the o-ring evidently had not provided a good enough seal against the grease
pressed into the bearing above. I cleaned it carefully and set the friction
as per the B.M. and did a taxi test. Slow taxi around the hangars and
fuelling station etc. requires of course more active use of the differential
brakes, but I did not find this to be as awkward as when I started the
ground testing - one does get used to it. The good thing is that the
steering was very responsive by use of rudder only when rolling down the
runway at speed, even at idle like after landing. So I will leave it that
setting and hopefully the shimmy is gone. - Checking for grease will
definitely be done frequently, does not take long anyway.
Best regards,
Svein
LN-SKJ
|