My aileron channels were too closed - apprently some came out like that.
Nev recommended that you could cut the flange to a minimum of 5/8 - although
you might want to check with Nev about that.
In the end the despite cutting back, the "closing" of the channel led to a
1/4 gap between the top skin and the channel flange. The aileron channel was
far too strong to be bent by force. So I applied heat and opene the channel
to the right proflie and then reinforced with bid.
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Andrew Sarangan
Sent: Wednesday, March 22, 2006 13:49
Subject: Re: Europa-List: Re: Aileron deflection angle
I wish the manual had mentioned that the rubbing motion is normal at
this stage. Any kind of rubbing would seem abnormal unless mentioned.
Also, reading ahead, I saw that you are supposed to trim the close-out
skin along with the wing skin after the top skin is bonded on.
On my wing, the main restriction to the aileron deflection is at the
root end, where the upper closeout is bonded to an end-cap. I spoke to
Andy at Europa, and he said that the end-cap is not that critical, and
I could snip the joint to relieve the pressure.
--- Keith Hickling <keithhickling@clear.net.nz> wrote:
> <keithhickling@clear.net.nz>
>
> Andrew,
> I have just done this part too. I found the main restriction on
> aileron
> deflection occurred where the upper aileron closeout joins the
> wingtip
> moulding. Most of the upper closeout can move upwards a little with
> the
> aileron, but at the tip where it is tethered it can not move. I found
> that
> cutting forwards a few mm where the rear edge of the upper closeout
> joins
> the tip moulding allowed sufficient upward deflection of the aileron
> without
> having to actually trim the closeout (even though the aileron
> continues to
> rub on the upper closeout - it is meant to do that at this stage).
>
> Regards,
> Keith
>
>
> ----- Original Message -----
> From: "Andrew Sarangan" <asarangan@yahoo.com>
> To: <europa-list@matronics.com>
> Sent: Wednesday, March 22, 2006 4:31 PM
> Subject: Re: Europa-List: Re: Aileron deflection angle
>
>
> <asarangan@yahoo.com>
> >
> > OK, I figured out where the aileron is getting snagged. It is
> rubbing
> > against the top surface of the aileron closeout (which is on the
> > trailing edge of the wing) throughout its entire range of motion.
> This
> > is what is restricting its max travel to 20-degrees. I can even see
> > where this rubbing pressure has even lifted portions of the
> closeout
> > skin that used to be bonded to the sides at the root end of this
> > closeout.
> >
> > One solution is to trim about 5mm from the closeout's upper lip.
> > However, I am not sure if this will cause any problems when bonding
> the
> > top skin on. Any ideas are appreciated.
> >
> >
> >
> >
> >
> >
> >
> >
> > --- Andrew Sarangan <asarangan@yahoo.com> wrote:
> >
> >> <asarangan@yahoo.com>
> >>
> >> Jeremy,
> >>
> >> That is exactly right. I am referring to the deflection without
> the
> >> pushrods attached.
> >>
> >> The gap between the hinged surfaces is more than the 1.5mm called
> for
> >> in the manual; however, I have not checked whether that's where
> the
> >> deflection is being restricted.
> >> I am assuming the neutral position (zero-degrees) to be when the
> >> aileron is aligned with the trailing edge of the wingtip. I think
> >> that
> >> makes sense because that would make the most streamlined situation
> to
> >> be zero-degrees.
> >>
> >>
> >>
> >>
> >> --- Jeremy Davey <europaflyer_3@msn.com> wrote:
> >>
> >> > <europaflyer_3@msn.com>
> >> >
> >> > I think what Andrew's saying is not that the pushrods won't
> allow
> >> him
> >> > the
> >> > movement, but that the aileron is fouling on the wing when he
> tries
> >> > to get
> >> > up deflection with the pushrods disconnected.
> >> >
> >> > Andrew, it sounds to me like you need to check the following:
> >> >
> >> > 1) the positioning of your hinges - are they too close in?
> >> > 2) your start point for zero degrees deflection - are you
> starting
> >> > from a
> >> > few degrees out?
> >> >
> >> > I hope this helps.
> >> >
> >> > Kind regards,
> >> > Jeremy
> >> >
> >> > Jeremy Davey
> >> > Europa Monowheel 537M G-EZZA
> >> > Europa Club Vice-Chairman, Webmaster, PFA NC Representative
> >> > PFA EC Member
> >> > "If you can keep your head when all about you are losing theirs,
> >> then
> >> > it is
> >> > possible you haven't grasped the severity of the situation."
> >> > Tail done
> >> > Standard XS wings with mods underway
> >> > CM installed in fuse (with airbrakes fittings)
> >> > 1430 build hours to date, build currently stalled due to house
> >> moves
> >> > and
> >> > lack of workshop
> >> > Intended fit:
> >> > Rotax 914 turbo, Airmaster CS fully-feathering prop
> >> > Lots of lights, buttons, switches, gizmos, and alarms
> >> >
> >>
> >>
> >> Andrew Sarangan
> >> http://www.sarangan.org
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > Andrew Sarangan
> > http://www.sarangan.org
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Andrew Sarangan
http://www.sarangan.org
|