----------------------------------------------------------
                           Europa-List Digest Archive
                                      ---
                     Total Messages Posted Tue 10/02/18: 5
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Today's Message Index:
----------------------
 
     1. 01:40 AM - Tailplane shaft installation  (Graeme Coates & Sharon Beaman)
     2. 02:40 AM - Re: Tailplane shaft installation  (Gaham Singleton)
     3. 09:32 AM - Re: Re: Vertical play at stabilator tips  (ami-mcfadyean@talktalk.net)
     4. 09:33 AM - Re: Vertical play at stabilator tips  (ami-mcfadyean@talktalk.net)
     5. 11:57 AM - Re: Vertical play at stabilator tips  (n7188u)
 
 
 
________________________________  Message 1  _____________________________________


Time: 01:40:30 AM PST US
Subject: Europa-List: Tailplane shaft installation
From: Graeme Coates & Sharon Beaman <coatbeam@melbpc.org.au>

When mounting my tailplane shaft I made sure the Fuselage 'boat' was 
rigid in this area by permanently fitting a strut just forward of the 
shaft at the point shown in Chapter 18 Fig 1 withe dimension of 132 mm 
(see picture). This is an absolute must to keep this area rigid; 
regardless of having a solid dolly to hold the fuselage at about 5 
locations. Over the several years of construction the tailplane shaft 
has always been easy to move - no slop, no friction.
Graeme Coates
Europa 423
Melbourne OZ


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________________________________  Message 2  _____________________________________


Time: 02:40:00 AM PST US
From: Gaham Singleton <grahamsingleton@btinternet.com>
Subject: Re: Europa-List: Tailplane shaft installation


Hi Graeme
Another point of some importance for builders to remember is that the tailplane
torque tube is chrome plated 4130.
Be careful not to damage the plating or distort the tube. Wasnt it precision ground
to size?
Graham
Wish I had a shed like Graemes!

> On 2 Oct 2018, at 09:35, Graeme Coates & Sharon Beaman <coatbeam@melbpc.org.au>
wrote:
> 
> When mounting my tailplane shaft I made sure the Fuselage 'boat' was rigid in
this area by permanently fitting a strut just forward of the shaft at the point
shown in Chapter 18 Fig 1 withe dimension of 132 mm (see picture). This is
an absolute must to keep this area rigid; regardless of having a solid dolly to
hold the fuselage at about 5 locations. Over the several years of construction
the tailplane shaft has always been easy to move - no slop, no friction.
> Graeme Coates
> Europa 423
> Melbourne OZ
> 
> 
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
> <Europa_060113_09.jpg>


________________________________  Message 3  _____________________________________


Time: 09:32:51 AM PST US
From: "ami-mcfadyean@talktalk.net" <ami-mcfadyean@talktalk.net>
Subject: Re: Europa-List: Re: Vertical play at stabilator tips


...<<if you see anything I did wrong let me know :)>>
Re. Stiffener rib behind aft bulkhead at bonding flange level:
I incorporated similary, slightly longer for-aft. It greatly stabilised the lower
fus during construction resulting in well aligned TP bearings. In early flights,
hairline cracking appeared in the paint film on the outer skin at the location
of the web. So I cut out the web and the hairline cracks have progressed
no further. 


Duncan McF.


----Original Message----
From: chmgarb@gmail.com
Subj: Europa-List: Re: Vertical play at stabilator tips


Hi Mike,

Daytona, Florida. I'm actually not that isolated. There are two Europas in the
field but, as much as I try to connect with the owners or get a ride in one, it
never happens (one is two hangars from mine so it can't get any closer). Maybe
one day I will be able to ride one, hopefully before mine flies :)

So here are some pictures I just posted in my build site:

https://sites.google.com/site/martineuropaxsa291/Fuselage

The stiffening ribs behind the aft bulkhead is just an ugly attempt at preventing
binding of the stab bearings. It's working well though not very elegant. As
mentioned, next time around (yeah right) I will cleco the fuselage before bonding
the bearings (or some other nifty way).

I thought I had a good picture posted of the cradle I have (built by the builder
I got the kit from) but its not there. There are a couple of pictures of the
cradle but you can't see the flat surface under the fuselage which is where the
fuselage is actually resting. The cradle fuselage supports (or whatever those
rib things are called) are not touching the fuselage. I trim those back so
that there is about an inch of clearance all around between the supports and the
fuselage skin. This was done to keep the cradle from deforming the fuselage
in any way. Those supports (or ribs) are still there so that I can tilt the whole
cradle and still support the fuselage. I also plan to remove the flat surface
when ready to install the gear.

Enjoy perusing my site and if you see anything I did wrong let me know :)

Chris


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=483519#483519


________________________________  Message 4  _____________________________________


Time: 09:33:39 AM PST US
From: "ami-mcfadyean@talktalk.net" <ami-mcfadyean@talktalk.net>
Subject: Re: Europa-List: Vertical play at stabilator tips


..<<Congratulate yourself on having the bushes perfectly aligned.>>
And my inspector thinks the slight radial play on well aligned TP bearings 
is TP pin play! It's not.
At annual innspection I now add some thickish oil to the TP bearings, which
 masks the bearing play and removes the argument.


Duncan McF


----Original Message----
From: kingsnjan@westnet.com.au
Subj: Re: Europa-List: Vertical play at stabilator tips

>

Chris

<  It is so smooth that now I am able    to feel vertical play when I move 
the stab tip vertically. 

I wouldn=99t be concerned if I were you ..... mine is exactly the sam
e.  Congratulate yourself on having the bushes perfectly aligned. If you ha
d no movement at all, it would mean the bushes were not properly aligned an
d the torque tube would be resting on high spots. 

The same situation arises with the main wing pin bushes. They are quite a l
oose fit on the main pins so if the pins are tight, it simply means the bus
hes are not perfectly aligned. 

Put the top on and move on mate!

Kingsley in Oz


________________________________  Message 5  _____________________________________


Time: 11:57:47 AM PST US
Subject: Europa-List: Re: Vertical play at stabilator tips
From: "n7188u" <chmgarb@gmail.com>


Duncan, interesting info on the experience you had with the stiffening member behind
the bulkhead as I did. True that there could be a bit of point load on the
skin from this rib and cause, as in your case, paint to crack. Mine is mounted
on a flange glassed to the side skin so maybe I won't have those cracking
issues. The top one though is just floxed near the bond flange so it could cause
a little strain and cracking of paint at the bond line. Time will tell.

I have mixed feelings about these two ribs. I hate complicating things and adding
weight (although in this case not too much). But they do seem to work by keeping
the skins that hold the bearings from flexing. It's amazing how little it
takes to move those bearings.

Chris


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=483545#483545


 

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