Elan trouble

Jim Ivey jivey61 at bellsouth.net
Thu Jun 30 14:46:38 AKDT 2005 

  Ha Ken
 I generally speak for myself.

Jim Ivey> 
> From: "Ken Thompson" <mrandmrst at comcast.net>
> Date: 2005/06/30 Thu PM 04:04:57 EDT
> To: <discussion at nsrca.org>
> Subject: Re: Re: Elan trouble
> 
> I just thought Jim has seen a picture of me somewhere and was hinting that I 
> needed to "slide a little forward on the board".:-)
> 
> Ken
> ----- Original Message ----- 
> From: "Jim Ivey" <jivey61 at bellsouth.net>
> To: <discussion at nsrca.org>
> Sent: Thursday, June 30, 2005 12:46 PM
> Subject: Re: Re: Elan trouble
> 
> 
> >   Hummph
> > I coulda said fat girl.......wanna start something?
> >
> > Jim I
> >>
> >> From: "Nat Penton" <natpenton at centurytel.net>
> >> Date: 2005/06/30 Thu PM 12:43:58 EDT
> >> To: <discussion at nsrca.org>
> >> Subject: Re: Re: Elan trouble
> >>
> >> OK Jim , you've gone too far. Let's leave the fat boy out of this.
> >>
> >> ----- Original Message ----- 
> >> From: "Jim Ivey" <jivey61 at bellsouth.net>
> >> To: <discussion at nsrca.org>
> >> Sent: Wednesday, June 29, 2005 10:25 PM
> >> Subject: Re: Re: Elan trouble
> >>
> >>
> >> >
> >> >> Ken
> >> > Good theory. It's like the moments on a see-saw. The fat boy has to sit
> >> > closer to the pivot than the skinny guy.
> >> >
> >> > Jim Ivey
> >> >> From: "Ken Thompson" <mrandmrst at comcast.net>
> >> >> Date: 2005/06/29 Wed PM 09:56:35 EDT
> >> >> To: <discussion at nsrca.org>
> >> >> Subject: Re: Elan trouble
> >> >>
> >> >> Jerry,
> >> >> I was having a problem balancing a plane a couple of years ago.  I
> >> >> figured
> >> >> out that weight on the tail has about 4 times the balancing effect 
> >> >> that
> >> >> weight on the nose does.  This is due to the fact that my plane had 
> >> >> about
> >> >> 4
> >> >> times the distance to the CG than the firewall did.
> >> >> This could be the effect of your glass and paint on your tail 
> >> >> feathers, 3
> >> >> extra oz. of glass and paint would be close to the weight you need on 
> >> >> the
> >> >> nose to balance, if you use the multiple of 4.
> >> >>
> >> >> Just a theory,
> >> >>
> >> >> Ken
> >> >> ----- Original Message ----- 
> >> >> From: "Jerry Wilson" <JWilsonJr at houston.rr.com>
> >> >> To: <discussion at nsrca.org>
> >> >> Sent: Wednesday, June 29, 2005 9:35 PM
> >> >> Subject: RE: Elan trouble
> >> >>
> >> >>
> >> >> > Jim,
> >> >> >
> >> >> > I don't know why it is tail heavy.  I was very surprised.  CG is 
> >> >> > noted
> >> >> > on
> >> >> > the plan. Fuselage is painted as are horizontal stab, elevator, and
> >> >> > rudder
> >> >> > which were also glassed.    Could be my glassing and paint job is 
> >> >> > heavy
> >> >> > although I would not have thought so much weight could be attributed 
> >> >> > to
> >> >> > this.  Rudder and Elevator servos are over the wing trailing edge as
> >> >> > per
> >> >> > plan.  Battery pack has been moved to the firewall.  Used Central
> >> >> > carbon
> >> >> > fiber push rod for elevator to MK dual bellcrank and MK control 
> >> >> > horns.
> >> >> > Push
> >> >> > pull cable on rudder.  Receiver and throttle servo are about at the 
> >> >> > CG.
> >> >> >
> >> >> > Jerry
> >> >> >
> >> >> > -----Original Message-----
> >> >> > From: discussion-request at nsrca.org
> >> >> > [mailto:discussion-request at nsrca.org]
> >> >> > On
> >> >> > Behalf Of Jim Ivey
> >> >> > Sent: Wednesday, June 29, 2005 5:24 AM
> >> >> > To: discussion at nsrca.org
> >> >> > Subject: Re: Elan trouble
> >> >> >
> >> >> > Jerry
> >> >> > Why is it  tail heavy. Maybe you are using the wrong CG point or did
> >> >> > you
> >> >> > put servos in the tail? Is the tail painted. I think figure out why,
> >> >> > then
> >> >> > solve the problem that way instead of adding all that weight.?
> >> >> >
> >> >> > Jim Ivey>
> >> >> >> From: "Jerry Wilson" <JWilsonJr at houston.rr.com>
> >> >> >> Date: 2005/06/29 Wed AM 07:14:53 EDT
> >> >> >> To: <discussion at nsrca.org>
> >> >> >> Subject: Elan trouble
> >> >> >>
> >> >> >> I have a dilemma and could use some advice from the group.
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> After over a year of building I have nearly completed my Elan which 
> >> >> >> is
> >> >> >> my
> >> >> >> first attempt to build a fiberglass fuse pattern ship.  It is 
> >> >> >> painted,
> >> >> >> covered, servos, push rods, and engine (120 four stroke) installed.
> >> >> > Weighs
> >> >> >> about 9 lbs.  Looks pretty nice.
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> The trouble is to get it to balance at the CG point on the plan (8"
> >> >> >> from
> >> >> >> wing LE) requires 11 oz in the nose.
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> According to Dick Hansen's plan the weight should be 8 - 10 lbs. 
> >> >> >> So
> >> >> >> it
> >> >> >> is
> >> >> >> still within the design range, at ~9.75 lbs.  But even if I can 
> >> >> >> figure
> >> >> >> a
> >> >> > way
> >> >> >> to add 11 oz of weight to the nose, I'm afraid the plane will not 
> >> >> >> fly
> >> >> >> the
> >> >> >> pattern well and am having serious doubts completing.  My 
> >> >> >> intentions
> >> >> >> were
> >> >> > to
> >> >> >> fly one or two more Sportsman contests with it and then move on to
> >> >> >> Intermediate.  Would appreciate some opinions/advice from the 
> >> >> >> group:
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> Should I try to figure out a way to add 11 oz wt. to the nose 
> >> >> >> securely
> >> >> >> and
> >> >> >> finish the plane?
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> Or abandon the ship and move on to something else?
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> TIA
> >> >> >>
> >> >> >> Jerry
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >
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> >> > -- 
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> >> > 6/21/2005
> >> >
> >> >
> >>
> >>
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