Whats the deal with counter-rotating props?

it can happen in any twin, non centerline thrust with or without CR props
it just depends on the severity and size of the rudder needed to control

yes, Vmc/se is still required on the check ride
BT

"Jim Carter" wrote in message
et...
Mike,
Doesn't that happen in any non-counter-rotating and
non-centerline-thrust twin when you try to operate below Vmc/se? It's
been a few years, so I have to ask: do they still require a Vmc/se
demonstration for the multi ticket?


-----Original Message-----
From: Mike Noel ]
Posted At: Sunday, January 29, 2006 3:05 PM
Posted To: rec.aviation.owning
Conversation: Whats the deal with counter-rotating props?
Subject: Whats the deal with counter-rotating props?

I didn't notice anyone bring this up in the thread. The AOPA
published
some
interesting stuff on the Twin Commanche without CR props since they
were
giving one away last year. With the older style twin, if you slow it
down
too much with the engines still developing thrust, it can flip over on
its
back. One of the wings is effectively flying at a couple of degrees
higher
angle of attach due to the prop airflow. I think this is the main
reason
the newer Twin Comanches went to CR props.

--
Mike Noel,
Tucson, Arizona

'Men never do evil so completely and cheerfully as when they do it
from
religious conviction.'

-Blaise Pascal
"Dico" wrote in message
oups.com...
Hello,

We're looking into a twin and the Twin Comanche is on our list. I
know
that the later models have the counter rotating props -- although i
don't know too much about what this means, other than its "better".

We fly a mooney now and thus I don't worry about the prop -- as long
as
it keeps spinning.

Is there a web site that gives a good explanation as to why I want
CR
props. There are hundreds of the earlier model Twin Comanches
flying
without the CR props --- so what does someone with 300 hours single
engine time need to worry about? What actually goes wrong? And
when
it does, what happens? I hear "critical engine" but it means very
little to me.

I like to fly and try to be very careful when I do fly... but I
don't
follow too much aviation stuff other than how it affects me -- so
I'm
not exactly a "buff", hence the above questions which may seem
obvious
to many.

Why are we looking at a Twin Comanche? Because its a twin, safer
for
IFR flight (perhaps this is only preceived), plus we live on the
east
coast on an island so we're flying over water quite a bit. Also
this
plane has decent speed and is an "economical" twin. We rarely fly
with
4 people, so we don't need any more seats than 4.

Any help or links to help would be appreciated.

Thanks,

Dico