[SPAM] Re: dual elev. pushrods

[David Lockhart]

Brian,

Sullivan product 581.  From the elevator servo clevis -
- I use a short piece of 4-40 threaded rod into a joiner block.
- from the joiner block, a 2-56 CF nyrod goes to each elevator half.
- About 6" prior to the elevator control horn clevises (about 1" before the
rods exit the fuse), I transition the CF nyrod to 0.070" steel rod which is
a little stiffer than the CF nyrod for the last few inches where the pushrod
is unsupported.
- I make my own threads on the 0.070 rod with a 2-56 die.

The benefits of this combination of materials is that it does not rely on
any glue joints or brass fittings, and the CF nyrod is not conductive (call
me old school, but I don't like metal rods of cables running parallel to the
antenna in my plane).  Total weight of the CF nyrods and casing, joiner
block, and steel rod on each end is 0.875 oz (25 grams) and I used 8 grams
of balsa structure to support the nyrod casings.  Very light system.  I have
some pictures of the install in my Vivat that I will send to you directly.

Dave


----- Original Message -----
From: "Brian Billings" <auto7832 at bellsouth.net>
To: <discussion at nsrca.org>
Sent: Wednesday, May 12, 2004 10:55 AM
Subject: Re: [SPAM] Re: dual elev. pushrods


> Does anybody see a problem using this system on a AA type plane with large
> elev. surfaces, will it be ridged enough, this is on a ZN Majestic that
> turned out tail heavy, original set up was with mini Digital's in the tail
> but I need to move everything to the front in order to have it balance and
> remain under 11lbs. Would a pull pull work out better due to the long span
> from the nose to its tail, or maybe go up one size with the solid carbon
> rod?
>
> " Have since shifted to the
> carbon fiber nyrods as they allow the use of threaded fittings and don't
> rely on the glue joints."
>
> Regards.
>
> Dave Lockhart
>
> Dave, where can I see/purchase these at, I have used the nylon rods in
> smaller planes but never seen carbon fiber nyrods, is the center rod solid

> and how flexible are they?
>
> Thanks everybody!!!
> ----- Original Message -----
> From: "David Lockhart" <DaveL322 at comcast.net>
> To: <discussion at nsrca.org>
> Sent: Tuesday, May 11, 2004 11:51 PM
> Subject: Re: [SPAM] Re: dual elev. pushrods
>
>
> > I'm not sure when Chidgey first used the system, but my Dad and I built
> > several airplanes using that basic system with materials from ACP as
early
> > as 1988 - and I don't think we were the first.  Have since shifted to
the
> > carbon fiber nyrods as they allow the use of threaded fittings and don't
> > rely on the glue joints.
> >
> > Regards.
> >
> > Dave Lockhart
> > DaveL322 at comcast.net
> >
> > ----- Original Message -----
> > From: "Ed Miller" <edbon85 at optonline.net>
> > To: <discussion at nsrca.org>
> > Sent: Tuesday, May 11, 2004 4:10 PM
> > Subject: Re: [SPAM] Re: dual elev. pushrods
> >
> >
> > > FYI, I believe Ron Chidgey first introduced the "Troy Newman" elevator
> > setup
> > > but Troy did an excellent job of presenting it. Some of us in the
> > northeast
> > > have used this method for years. Works great, solid, very light and
once
> > > installed and adjusted I've yet to ever have to adjust or maintain
> > anything.
> > > Ed M.
> > > ----- Original Message -----
> > > From: "Brian Billings" <auto7832 at bellsouth.net>
> > > To: <discussion at nsrca.org>
> > > Sent: Tuesday, May 11, 2004 3:00 PM
> > > Subject: Re: [SPAM] Re: dual elev. pushrods
> > >
> > >
> > > > BINGO! That is what I was looking for, and it was Troy Newman not
> Eric,
> > > > sorry Eric. Thanks Brian Y.
> > > > ----- Original Message -----
> > > > From: "Brian Young" <b4598070 at yahoo.com>
> > > > To: <discussion at nsrca.org>
> > > > Sent: Tuesday, May 11, 2004 1:56 PM
> > > > Subject: [SPAM] Re: dual elev. pushrods
> > > >
> > > >
> > > > > Is this what you had in mind?
> > > > >
> > > > > http://www.rcaerosport.com/articles/tech/ele%20control/intro.htm
> > > > >
> > > > > --- Brian Billings <auto7832 at bellsouth.net> wrote:
> > > > > > Can anyone tell me where I can find Eric Hendersons
> > > > > > article about a method he uses to run dual pushrods
> > > > > > for elev.
> > > > > >
> > > > > > Thanks Brian
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
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