Re: Washingout both wingtips/No-cal

From: barrysholder <barry_at_signandart.com>
Date: Thu, 29 Jun 2006 11:45:08 -0000

--- In Indoor_Construction_at_yahoogroups.com, Don Slusarczyk
<don5490_at_...> wrote:
>
> Barry,
>
> I was specifically speaking of washout being required on low wing
> nocals. High wing and mid wing models like the Hosler Fury do not
need
> it and I have that model setup to fly to the right. Some washin
is
> generally needed in the right wing as when wound up the torque
twists
> the washin out of the right wing and adds it to the left wing to
counter
> torque. Much like an EZB body does.
>
> The reason washout is used for low wings is because the vertical
center
> of gravity is above the wing. When your models stalls, a low wing
will
> generally fall off to one side or another or roll over. With
washout in
> the tips, then when the nose comes up and a stall starts to happen
the
> center section stalls first but the tips keep flying. In general
this
> delays the full stall enough to allow the nose to drop and the
model to
> keep flying without rolling over to one side. In a high wing
nocal, when
> the nose comes up for a stall , the natural stability of the
models
> keeps them from rolling over (generally) as the vertical CG is
below the
> wing.
>
> Don
>
>
>
> > I read on SFA's site(if I remember by Don S.),that if you washed
out
> > both wingtips on a large No-cal, (as I saw at USIC), that
trimming
> > would be much easier. How so?
> >
>
>
> [Non-text portions of this message have been removed]
>Don, thanks for the info. I have the Fury plans on the way and want
to build for competition. What about props on that model and the
amount of rubber. On trimming , I assume that you will just add
right thrust to get the right turn and whatever down thrust is
required. Any Rudder?
Received on Thu Jun 29 2006 - 04:46:37 CEST