Scoring Vs Judging

[Tony Stillman]

Vincent:

Your correct in that the "cone" description is not in the rule book.  This
is an effect of doing the snap which will allow you to easily distinguish
the difference between a very fast roll and a snap.  Once you get used to
looking for it, you will see that all airplanes make a "cone" when they
snap.  Some are big or small, but they are there.

The issue of snaps is always interesting to discuss at a judges meeting, no
matter if it is at a local contest or a NATS!


Tony Stillman
Radio South
3702 N. Pace Blvd.
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
----- Original Message ----- 
From: <VicenteRC at aol.com>
To: <discussion at nsrca.org>
Sent: Wednesday, June 11, 2003 9:51 AM
Subject: Re: Scoring Vs Judging


>
>
>
> Thanks Tony:
>
> I have the tape but I haven't review it since long ago.  I will review the
tape as soon as I have chance.
>
> I agree with your snap roll description.  It is interesting to read the
snap description in the rulebook.  The link you sent yesterday gives both
pattern and IMAC.  My question now is: Do we need to review the rules for
snaps?  In the description I never found that the tail has to describe a
cone shape.  I agree 100% that a proper snap the plane should show a cone
shape.  It is very important issue because all maneuvers with snaps have
usually high K-factor.  If the snaps are difficult to judge then we could
introduce a large margin error in the outcome of the contest.
>
> Vicente
>
>
>
>
>
>
>
>
> In a message dated 6/11/2003 8:23:12 AM Eastern Standard Time,
tony at radiosouthrc.com writes:
>
> >
> >
> > Vicente:
> >
> > Here is my outlook on snaps....
> >
> > The issue here is that different models will give different looks when
> > stalled.  The judging VIDEO is pretty good here.  If you don't have a
copy,
> > get one from Maureen Dunphy (NSRCA Secretary).  The "break" really means
a
> > change from flying to stalled that occurs abruptly.  In normal flying,
the
> > track of the model and the attitude of the model is generally the same.
> > But, like flying a vertical line in a crosswind, the model must track
> > vertically to score well.  This requires the pilot to apply a correction
> > into the wind so the track of the model is vertical, but the attitude of
the
> > model is angled into the wind.  Getting the model to "break" is actually
> > very difficult to do using the elevator only.  If you give a quick input
of
> > elevator, the model will not "break" off the track, but will just move
to
> > the new track!  This is one of the qualities of flying low wing-loading
> > models.  You really have to put some controls out in the breeze to stall
> > them!  The rotation of the snap is around the CG of the model, but with
the
> > nose of the aircraft above (or below in a negative) the line of flight
of
> > the model.  That is, the track of the model is different than the
direction
> > that the nose is pointed in.  This is the "break", or change in attitude
of
> > the airplane from the track.  This will give a "cone-shape" to the
rotation
> > of the tail, so it will look very different than that of a regular
aileron
> > roll.  This is the signature of a true snap, the rotation of the tail.
> >
> > The bottom line is that models will give different looks when stalling
and
> > snapping.  Even the same model can give a different look if you stall it
at
> > different speeds!  So, I agree with others saying that you can't be too
> > picky on what you WANT to see in a snap.  I suggest you look to make
sure
> > the tail is moving in a cone-shape, not just pivoting as in an aileron
roll.
> >
> > Judging snaps can be difficult......
> >
> >
> >
> > Tony Stillman
> > Radio South
> > 3702 N. Pace Blvd.
> > Pensacola, FL 32505
> > 1-800-962-7802
> > www.radiosouthrc.com
> > ----- Original Message ----- 
> > From: <VicenteRC at aol.com>
> > To: <discussion at nsrca.org>
> > Sent: Tuesday, June 10, 2003 3:22 PM
> > Subject: Re: Scoring Vs Judging
> >
> >
> > > Thanks Tony:
> > >
> > > It is interesting to read that both rules are similar in concept.  My
> > opinion is that the chances to show a definitive "break" are a lot less
when
> > you use the snap switch only.
> > >
> > > I am flying Advance and the 45 degree with snap presents a lot better
when
> > I try to show the break.  For me break is high speed stall
> > before any other
> > input.  Is this a possible definition of "break".
> > >
> > > Vicente
> > > =====================================
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> > > #
> > >
> > >
> > >
> >
> >
> > =====================================
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>


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