George Lendich wrote:

The 25 pound Extra 300 is going about how fast when the rudder is

sitting on

the black top, and the nose is straight up?

Shaun Tucker fly's a biplane, a bit larger than a Pitts, with about

400HP.

Maybe 900 pounds hanging on the prop, with the only relative wind

available

being generated by the propeller. About a foot of each bottom wing

involved. If

the wings fell off while he is doing this, it would just make the

plane

lighter.

So if you have sufficient power and your wings fall off, land

vertically -

there's an alternative to a possible problem, never thought of that!

He is using less than full power to do this as he leaves this stunt

by

powering up and accelerating away vertically.

All the stunts I've seen tend to nose dive before powering-off !!

George (down under)

Lyn,
no matter what you drive, if it is round and does some work and is driven
from the center (like the prop shaft) like a prop, fan, rotor, wheel,
whatever, it will have torque, maybe not much, but if there is nothing to
counter it, wherever the power comes from will rotate in the opposite
direction.
I am not 100% sure, but most likely on all these powerstunt-airplanes the
elevators can be actuated in a "aileron" mode (one goes up the other one
down) so you can adjust the counter torque, which in this case comes from
the airflow of the slipstream over the controls...,as the actual ailerons
are pretty much stalled at this instants.

Thomas J.

What they have Thomas is full wing length ailerons. This puts some of
the aileron in the prop slip stream. That is what counter acts the
torque.
 
Paul Lamar
 
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