I just took a close look at my LB2 and it looks like I definitely have some
'up' where I mounted the tail.
How do you correct this w/o destroying the tail given the whole thing is
balsa? I guess I could try to cut the tail off.
Dave
----- Original Message -----
From: "Dan Borer" <[EMAIL PROTECTED]>
To: "Dave Seay" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, February 16, 2001 4:44 PM
Subject: Re: [RCSE] porpoising solutions???
> I'm no rocket scientist, but correcting the decalage on my
> Gnome fixed it for me.
>
> Dan
>
> ----- Original Message -----
> From: "Dave Seay" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, February 16, 2001 11:39 AM
> Subject: Re: [RCSE] porpoising solutions???
>
>
> > I would like to hear the comments on this as well.
> > I've got an Xterm parked on the runway waiting for the
> wind to calm down but
> > I noticed the same thing with my LB2.
> >
> > I initially had the LB2 balanced right dead on and it did
> the roller coaster
> > too. At first I added weight and it go it under control
> but I did not like
> > the increase in weight. I removed the weight and trimmed
> in a little down
> > and after doing this several times, I got a happy medium.
> I have a little
> > extra weight and a little down trim and I like the way it
> handles.
> >
> > Dave
> > ----- Original Message -----
> > From: "Daniel Boyer" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Friday, February 16, 2001 2:20 PM
> > Subject: [RCSE] porpoising solutions???
> >
> >
> > > I took my new Xterminator out for a test flight
> yesterday evening (I found
> > a
> > > field with well packed snow that I could walk on)...
> First off I have to
> > > say that it floats like a dandelion (and this was in
> VERY still air which
> > > was giving me air times of ~12 seconds with my 11.5oz
> Zagi THL)... The
> > > first throw, it glided out nicely but started trying to
> porpoise... I
> > > brought it back to me and checked the CG... It was in
> the dead center of
> > the
> > > recommended CG. I added pushed the battery pack to the
> very front of the
> > > nose (moving the CG forward about 1/8") and gave it
> another toss... it
> > still
> > > porpoised so I brought it back and added a couple of
> coins to the nose
> > > (bringing the CG about 1/4" ahead of the recommended
> CG)... gave it
> > another
> > > toss and it flew fine (although wasn't as responsive as
> before.
> > >
> > > I added the weight to the front to correct the
> porpoising, because in the
> > > past when my planes have done this, everyone at the
> field said to just add
> > > nose weight. I always end up with my CG's in front of
> the recommended
> > CG's
> > > because of the porpoising, but then I read about people
> flying with cg's
> > > behind the recommend placement. This has made me wonder
> if moving the CG
> > > forward is truly the correct correction for the
> porpoising. Is there
> > > another correction for this porpoising tendency other
> than CG movement?
> > >
> > > Thanks, Daniel
> > >
> > > BTW: I only got to toss the Xterminator about 5 times
> b/c on the 5th time
> > I
> > > decided to give the launch preset a try, so I switched
> to the model memory
> > > that I thought I had programmed with the latest launch
> preset setup...
> > Gave
> > > it a toss, saw the plane starting to loop backwards so I
> switch the preset
> > > switch back in the opposite direction to which it
> responded by doing a
> > nose
> > > dive (despite giving it full up elevator... I could see
> that the elevator
> > > was still showing down, so this was not a stall...) it
> hit the ground and
> > > cracked the fuse in numerous places (I have since fixed
> it w/ about and
> > hour
> > > of work)... I assessed the damage and determined that it
> wasn't anything
> > > major, then I tried to figure out what happened... I
> checked my mixing and
> > > quickly realized that I had chosen the wrong model
> memory and that the
> > > switch had been having no effect, but instead my
> throttle stick was in
> > > control (I was apparently hitting the throttle stick in
> my paniced state
> > > causing the down elevator input). ie: ALWAYS DOUBLE
> CHECK YOUR MODEL
> > MEMORY
> > > SELECTION!!! ;-) I'm going to try to give it another
> try this weekend if
> > > the snow holds off.
> > >
> > > RCSE-List facilities provided by Model Airplane News.
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> > >
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