MK elevator misalignment (part 2)

[Keith Black]

Tony, was your stab already sheeted when you installed the servos? Do you
have pictures that you can share to give the rest of us ideas on how to go
about it (other than the method that PLProd uses).

What I'm contemplating is what's the best method of installing them given
that my stab is already complete, but not covered or painted.

I'm thinking it would be easiest to cut into the bottom of the stab and
route out an area for the servo box rather than try and enter from the stab
root. I could also install a very small false rib to add support to the
servo box so it doesn't twist or move. I could then open an entry in the
stab root as PLProd does. To cover the hole routed in the bottom of the stab
I could glue in a 1/8" piece of balsa over the servo box and sand it round
to conform to the air foil.

Thoughts anyone?

Keith

----- Original Message -----
From: "Tony Stillman" <tony at radiosouthrc.com>
To: <discussion at nsrca.org>
Sent: Friday, March 21, 2003 3:55 PM
Subject: Re: MK elevator misalignment (part 2)


> I just checked this out.  It must work for Troy, but when I received my
> pre-built Smaragd, the builder had installed this system.  It was very
> stiff, and hung up in several places, mainly due to not being straight to
> start with.
>
> I ripped it out and put the servos in the stabs.....
>
> Tony Stillman
> Radio South, Inc.
> 3702 N. Pace Blvd.
> Pensacola, Fl 32505
> www.radiosouthrc.com
> 800-962-7802
> ----- Original Message -----
> From: "David Flynt" <davidflynt at earthlink.net>
> To: <discussion at nsrca.org>
> Sent: Friday, March 21, 2003 2:39 PM
> Subject: RE: MK elevator misalignment (part 2)
>
>
> > Troy Newman wrote an awesome article on the entire subject.
> > http://www.rcaerosport.com/articles/tech/ele%20control/intro.htm or
> > http://www.cox-internet.com/donramsey/ElevatorControlSys.htm
> >
> > I am going to try Troy's suggestion on my next plane, and I know that
> > several pilots in D7 are using this method now.
> >
> > David Flynt
> >
> >
> >
> >
> > -----Original Message-----
> > From: discussion-request at nsrca.org
> > [mailto:discussion-request at nsrca.org]On Behalf Of Keith Black
> > Sent: Friday, March 21, 2003 9:48 AM
> > To: discussion at nsrca.org
> > Subject: Re: MK elevator misalignment (part 2)
> >
> >
> > > putting servos in the stab halves
> >
> > This is exactly what I had initially considered on my Aries so my
> removable
> > stab would be easier to remove. Essentially they would be like small
main
> > wings.
> >
> > However all the feedback that I received seemed to indicate that this
was
> a
> > bad idea due to extra weight, possible differences in throw over time,
> etc.
> >
> > I'd like to hear pros and cons from others that use used this technique.
> >
> > Thanks,
> > Keith
> >
> > ----- Original Message -----
> > From: "Tony Stillman" <tony at radiosouthrc.com>
> > To: <discussion at nsrca.org>
> > Sent: Friday, March 21, 2003 8:31 AM
> > Subject: Re: MK elevator misalignment (part 2)
> >
> >
> > > I didn't like it on my Excellence either, and I went back to putting
> > servos
> > > in the stab halves per the instructions on the Smaragd on the PL
> website.
> > >
> > > Tony Stillman
> > > Radio South, Inc.
> > > 3702 N. Pace Blvd.
> > > Pensacola, Fl 32505
> > > www.radiosouthrc.com
> > > 800-962-7802
> > > ----- Original Message -----
> > > From: "Bill Carpenter" <bcarpenter at greenvilleisp.net>
> > > To: <discussion at nsrca.org>
> > > Sent: Thursday, March 20, 2003 5:53 PM
> > > Subject: Re: MK elevator misalignment (part 2)
> > >
> > >
> > > > Wayne,
> > > >
> > > > I haven't been following this particular discussion very closely,
but
> do
> > I
> > > > understand that you didn't like the MK bellcrank and went back to
pull
> > > pull
> > > > on the Aries elevator???????
> > > >
> > > > Bill
> > > >
> > > > ----------
> > > > >From: wgalligan <wgalligan at cnbcom.net>
> > > > >To: discussion at nsrca.org <discussion at nsrca.org>
> > > > >Subject: Re: RE: MK elevator misalignment (part 2)
> > > > >Date: Thu, Mar 20, 2003, 3:36 PM
> > > > >
> > > >
> > > > > BACK to Kevlar pull/pull for me.  Much easier to adjustment in the
> > > > > pull/pull also.
> > > > >
> > > > > Wayno
> > > > >
> > > > >> I think I may have the solution to this dilemma - Pull / Pull.
> > > > >>
> > > > >> Gene Maurice
> > > > >> gene.maurice at attbi.com
> > > > >> Plano, TX
> > > > >> AMA 3408
> > > > >> NSRCA 877
> > > > >>
> > > > >> -----Original Message-----
> > > > >> From: discussion-request at nsrca.org
> > > > >> [mailto:discussion-request at nsrca.org]On Behalf Of Keith Black
> > > > >> Sent: Thursday, March 20, 2003 3:21 PM
> > > > >> To: discussion at nsrca.org
> > > > >> Subject: Re: MK elevator misalignment (part 2)
> > > > >>
> > > > >>
> > > > >> Just checked mine that I bought two or three months ago and found
> the
> > > same
> > > > >> thing. I also noticed that the holes where the arms are inserted
> are
> > > not
> > > > >> centered. This is probably what's causing the problem.
> > > > >>
> > > > >> Keith
> > > > >>
> > > > >> ----- Original Message -----
> > > > >> From: "wgalligan" <wgalligan at cnbcom.net>
> > > > >> To: <discussion at nsrca.org>
> > > > >> Sent: Thursday, March 20, 2003 8:47 AM
> > > > >> Subject: Re: MK elevator misalignment (part 2)
> > > > >>
> > > > >>
> > > > >> > I checked mine last night and I found the same thing.
Looseness
> > and
> > > the
> > > > >> tabs where not aligned.  I was wondering why I was having a bit
of
> a
> > > problem
> > > > >> with the differential when I was setting up.  I also noticed a
> slight
> > > snap
> > > > >> in the setup and thought it was in my connectors being loose but
it
> > was
> > > the
> > > > >> looseness of the assembled bellcrank. Know I know why.  When you
> > > tighted the
> > > > >> assembly the tabs can twist due to the slop. I too did the c/a
> trick
> > > and it
> > > > >> is tight and square now.
> > > > >> > BTW this was the black MK Bellcrank and I purchased it last
June
> > '02
> > > from
> > > > >> Central Hobbies.  Definitely a Japanese product as you could
barely
> > > > >> understand the broken English.
> > > > >> >
> > > > >> > Wayne
> > > > >> >
> > > > >> >    > I had the same problem with my MK belcrank that I had
bought
> > > last
> > > > >> year. It also had a slop in the movement.The fix I applied is
> similar
> > > just
> > > > >> ca bonding a carbon strip on the flats and reshaping.
> > > > >> > > BTW, I am expecting samples of a similar but different brand
bb
> > > elev
> > > > >> belcrank (a local brand look-alike model). I will let you know
> about
> > > their
> > > > >> quality and possible availability of these ones when I receive
the
> > > samples.
> > > > >> > > Nedim
> > > > >> > >
> > > > >> > >   ----- Original Message -----
> > > > >> > >   From: NSRCA Canada-West
> > > > >> > >   To: discussion at nsrca
> > > > >> > >   Sent: Wednesday, March 19, 2003 11:53 AM
> > > > >> > >   Subject: MK elevator misalignment (part 2)
> > > > >> > >
> > > > >> > >
> > > > >> > >   Hi folk's
> > > > >> > >
> > > > >> > >   Further to my comments on the MK elevator alignment issue,
I
> > have
> > > had
> > > > >> a couple e-mails from other builder flyers that 1) have no
> alignment
> > > problem
> > > > >> and 2) do have an alignment problem. It appears as though it may
be
> a
> > > bad
> > > > >> batch so heads up.
> > > > >> > >
> > > > >> > >   I have posted a page showing the problem and a possible
> > solution.
> > > Hope
> > > > >> this helps. http://members.shaw.ca/drev/mk.htm
> > > > >> > >
> > > > >> > >   Thanks to Iiro Nikkila for bring this to my (our) attention
&
> > > offering
> > > > >> a solution.
> > > > >> > >
> > > > >> > >   Dave
> > > > >> > >
> > > > >> >
> > > > >> >
> > > > >> > =====================================
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