Fin sections or lack thereof

[george kennie]

I had a flat-plate stab on my Fresca and it flew like my Focus. Maybe I'm just
not accomplished enough to tell the difference. My new design will also have a
flat-plate stab and virtually flat fin as well.
 My Javelin also has a flat-plate stab and is a pure joy to fly, better than
anything else in it's class, IMHO.
With some of the sections now in vogue, we're getting close to flat-plate, and
yes John, the thinner they get it does seem to be more difficult to keep the
buggars warp free.
Georgie

John Ferrell wrote:

> I regard it as a mistake. I feel the additional rigidity is worth the
> effort.
> I have thought about trying a flat plate wing section as an experiment, but
> I doubt I could keep it straight.
>
> John Ferrell
> 6241 Phillippi Rd
> Julian NC 27283
> Phone: (336)685-9606
> johnferrell at earthlink.net
> http://home.sprintmail.com/~johnferrell/dixiecompetitionproducts/
> NSRCA 479 AMA 4190  W8CCW
> "My Competition is Not My Enemy"
>
> ----- Original Message -----
> From: "Koenig, Tom" <Tom.Koenig at actewagl.com.au>
> To: "'Discussion'" <discussion at nsrca.org>
> Sent: Wednesday, December 17, 2003 8:20 PM
> Subject: Fin sections or lack thereof
>
> >
> > Ok Guys...since its quiet.....
> >
> > First of all, Merry Christmas to you all...nice warm 86+ deg F here ( too
> > hot actually)
> >
> > Have any of you considered why so many late generation planes do not
> feature
> > actual airfoil sections on the fin and rudder?? It seems to be prevalent
> on
> > the European or any composite fuselages I have seen.
> >
> > Since I've been designing  my own models for so long and only recently
> > turned to the "Dark Side" of building a couple of kits (ZN &PL).....I was
> > wondering why it seems to be the norm of not actually using an airfoil for
> > the fin etc. I have seen this on many other designs also.
> >
> > To me it feels like flying a model with a flat ( non airfoil) stab.
> >
> > Does anyone agree? Is it just that everyone is woossing out from a little
> > more building work??
> > Like I said, I find I get a better feel for rudder, rolling, K/E by doing
> > this.
> >
> > Maybe I'm imagining this....maybe my model is just plain better <VBG>
> >
> > OK...eyes ,ears and mind are open.......I'm willing to be educated
> >
> > best regards
> >
> > Tom
> >
> >
> >
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