[NSRCA-discussion] Trimming question

[Dowayne Gould]

Sticks should not have any dihedral if built to plans. I glued my wing
together flat on the table.
Dowayne

On 1/30/06, Rcmaster199 at aol.com <Rcmaster199 at aol.com> wrote:
>
> The simplest, quickest fix is to turn the wing up side down so the beastie
> has anhedral. Change nothing else initially.
>
> MattK
>
> In a message dated 1/30/2006 1:54:57 PM Eastern Standard Time,
> d.pappas at kodeos.com writes:
> Hi Gang, Hi Ken,
> The enswer probably lies in a combo of what Lance and Ron offered.
> How much is your buddy willingg to cut or add to fix the problem.
> A ventral strake/subfin will be a great experiment, and I am sure that a
> bunch of us would like to hear the results.
> Raising the stab would be terribly invasive, and also interesting.
> Make sure the ship flies with a styraight elevator first.
> later,
> Dean
>
>
>
> Dean Pappas
> Sr. Design Engineer
> Kodeos Communications
> 111 Corporate Blvd.
> South Plainfield, N.J. 07080
> (908) 222-7817 phone
> (908) 222-2392 fax
> d.pappas at kodeos.com
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf
> Of patterndude at comcast.net
> Sent: Monday, January 30, 2006 1:44 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Trimming question
>
> Ken,
> Not always. In level flight the neg incidence will require up trim. In KE
> flight, the tail has an increased weighting in the balance of forces and
> this uptrim can be more than needed.
> --Lance
>
>
> --
> District 6 AVP
> www.aeroslave.com
>
> -------------- Original message --------------
> From: "Ken Thompson" <mrandmrst at comcast.net>
>
> > Wouldn't negative incidence cause it to push to the gear, not the canopy?
> >
> > Ken
> > ----- Original Message -----
> > From: "Lance Van Nostrand"
> > To: "NSRCA Mailing List"
> > Sent: Monday, January 30, 2006 12:40 AM
> > Subject: Re: [NSRCA-discussion] Trimming question
> >
> >
> > > Not many responses to this one, but here's my thought. The wing
> incidence
> > > is way negative and the CG is aft. I got myself into that situation once
> > > and didn't catch it for a while. Inverted flight was fine but the plane
> > > was
> > > squirrely and the up elv trim was more effective in knife edge than
> level
> > > flight, resultin! g in canopy pull.
> > > --Lance
> > >
> > > ----- Original Message -----
> > > From: "John Pavlick"
> > > To: "NSRCA Discussion"
> > > Sent: Friday, January 27, 2006 10:31 PM
> > > Subject: [NSRCA-discussion] Trimming question
> > >
> > >
> > >> Ok here's a good one. The owner of the L.H.S. asked me what I thought
> > >> about
> > >> this and I couldn't come up with a good answer. He has a Hangar 9 Ugly
> > >> Stik - the real big one. I can't remember exactly what it's called.
> Guess
> > >> it
> > >> has a gas motor in it. It's big. He says he has it trimmed so it will
> fly
> > >> inverted with just a very slight bit of down elevator (almost none).
> Ok,
> > >> so
> > >> it's not nose heavy, maybe even a little tail heavy. Now, when he flies
> > >&! gt; it
> > >> knife edge (either side) it pulls severely to the canopy. I mean like
> it
> > >> will fly a complete circle. It needs almost 3/4 down elevator to fly
> > >> straight. It's beyond a mix - fix. He also says that it has a bit of
> roll
> > >> couple when flying level (not knife edge) but it doesn't pitch severely
> > >> up
> > >> or down under these conditions. Any thoughts? I guess you can rule out
> > >> C.G.
> > >> because if anything it should pull to the belly considering how it's
> > >> trimmed
> > >> to fly level upright and inverted. I haven't flown it so I can't add
> too
> > >> much more. He builds OK so I don't think there's anything way out of
> > >> alignment, but again I haven't seen it yet so maybe there is. What
> should
> > >> I
> > >> look for if I get my hands on it to try and help him?
>
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