You tell me...

Next time you are doing your run up.. hold the brakes and move the control
foward and aft.. is the nose rising and falling because of action of wind
(prop wash) over the elevator position? Granted in a heavy PA28, it may not
be very noticable, but try it in a Cessna 152/172.

you are mixing apples in oranges when talking about "the nose falling due to
CG and center of lift".
IIRC the original thread was concerned with pushing the nose down to put
more weight on the nose wheel for cross wind control,
in the example you mention, it involves the nose falling forward because the
elevator/wings combination cannot generate enough "lift" in their respective
direction to keep the nose up.

Now.. lets expand on that a bit.. when performing an outside loop maneuver,
is the nose being pushed around the loop because the elevator is creating
less "lift" or because the elevator is forcing the nose around.

Why would a tricycle gear airplane behave any differently than a tail wheel
as far as elevator effectiveness. Other than possible physical limits
allowed to elevator travel.

In the only Piper POH I have avalible to be right now, On landing... ""After
ground contract hold the nose wheel off as long as possible. Braking is most
effective when back pressure is applied to the control wheel. In high wind
conditions, particularly in strong crosswinds, it may be desirable to
approach the ground at highter than normal speeds with partial or no flaps."

Funny, it says nothing about pushing forward on the stick for directional
control.

B

"Dan" wrote in message
ups.com...
Ok, this is a followup to the previous discussion about forward control
pressure during the landing rollout. Can someone tell me if the
elevator/stabilator can actually generate an _upward_ force, or does it
simply generate a downward force for climbing and less downward force
for a decent?

Does the nose fall due to the CG being forward of the center of lift,
or does the elevator actually push the tail up?

We are talking about tricycle gear planes, not taildraggers... The PA28
series specifically.

--Dan