Today's Message Index:
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1. 03:48 AM - Filling in ends of flap and aileron (jglazener)
2. 05:29 AM - Re: undercarriage retraction problem (rparigoris)
3. 06:30 AM - AW: undercarriage retraction problem (A. Buess Aviatik)
4. 07:56 AM - Re: Filling in ends of flap and aileron (Nigel Graham)
5. 10:42 AM - Re: Re: undercarriage retraction problem (Rowland Carson)
Message 1
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Subject: | Filling in ends of flap and aileron |
For aesthetic and aerodynamic reasons I want to fill in the end ribs of the flaps
and ailerons. The standard way to do that is cutting blue foam to size, making
flox corners and finishing with two layers of bid. Given that it is non structural,
would it not be easier and lighter just to fill it up with a stiff epoxy
/ micro mix? Anybody done that, and might there be good reasons NOT to do
it?
--------
Jeroen
http://www.europaowners.org/main.php?g2_itemId=44165
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=443178#443178
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Subject: | Re: undercarriage retraction problem |
Hi Group
Here's some info on over-center in gallery:
http://www.europaowners.org/main.php?g2_itemId=27433
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=443182#443182
Message 3
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Subject: | undercarriage retraction problem |
Hi Rowland
In the (old) Europa Aircraft News(letter) No 23 there is a recommendation
made by Any Draper about how to proceed when there is a conflict between the
brake master cylinder and the mono tire (see page 11). This seemed to be a
known problem with some kits. I had this problem too and had to reposition
the master cylinder. Neville Eyre gave me a detailed instruction. Let me
know if you need it, I could make a PDF and send it to you.
Regards, Alfred
Alfred Buess
CH-3700 Spiez, Switzerland
Europa XS HB-YKI, Ercoupe 415-E N94804
-----Original Message-----
From: Rowland Carson
Sent: Saturday, June 06, 2015 9:47 PM
Subject: Europa-List: undercarriage retraction problem
--> <rowlandcarson@gmail.com>
Ive finally managed to satisfy myself that the flaps are operating over the
correct range, and moved on to installing the undercarriage. After fitting
the LG02 swinging arm to the LG01 mounting frame, I was still (just) able to
operate the retract lever without any bungee assistance. Then I fitted the
wheel and brake to LG02 and of course that made it too heavy to retract
without the bungee.
Yesterday I fitted the bungee and was pleased to find a number of loops and
tension that nicely balanced the weight of the undercarriage and allowed the
lever to operate quite easily. However, I couldnt quite get the lever into
the up gate. Examination of everything showed that (1) the tyre was
hitting the brake master cylinder and its elbow connexion and (2) the brake
slave cylinder was catching the rudder cable.
Initially it looked as if LG02 might be too far to starboard, but I had
taken care when fixing LG01 into the fuselage to have LG02 temporarily
fitted, and inserted packing to keep LG02 equidistant from the tunnel at
each side.
The other possibility that occurred to me was that (despite careful
measurements against the manual callout) Id pre-compressed the LG06
suspension block at bit too much, causing the distance between the LG08
pivots and the LG02 pivots to be too small, thus making the LG02 swinging
arm retract too far.
I tried backing off the M8 stiffnuts a little (which involved removing and
re-installing the bungee again - nobody mentioned how hard it is to thread
the bungee around LG02B anchor tube) and that did seem to allow a little but
more movement in the up direction but nowhere near enough to get the lever
into the up gate. While looking at everything after that adjustment, it
seems that the linkage is not quite going over-centre in the down
position - it appears the 3 pivots are just about in line with each other. I
wonder if lengthening the suspension assembly has caused that.
Can anyone suggest what I might be doing wrong, please, or any way to solve
the problem?
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
Message 4
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Subject: | Re: Filling in ends of flap and aileron |
Hi Jeroen,
I did this with both the flaps and ailerons. It's very easy to do, adds
negligible weight and the finished result looks very professional.
I would recommend blue foam over ladling in the filler every time. Just
lay the prepared foam sheet (cut slightly thicker than the close-out to
be filled) on the floor, stand the flap end-on onto the foam and tap it
hard with the palm of your hand, this will leave an imprint of the
required profile in the foam, cut it out, fettle to fit, bond it in and
leave it.
The next day you just block down the foam to the laminate edge and lay
up as you described. You should get the whole lot done in a day.
m.v.g.
Nigel
On 07/06/2015 11:44, jglazener wrote:
>
> For aesthetic and aerodynamic reasons I want to fill in the end ribs of the flaps
and ailerons. The standard way to do that is cutting blue foam to size, making
flox corners and finishing with two layers of bid. Given that it is non
structural, would it not be easier and lighter just to fill it up with a stiff
epoxy / micro mix? Anybody done that, and might there be good reasons NOT to
do it?
>
> --------
> Jeroen
>
> http://www.europaowners.org/main.php?g2_itemId=44165
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=443178#443178
>
>
Message 5
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Subject: | Re: undercarriage retraction problem |
On 6 Jun 2015, at 19:21, JonSmith <jonsmitheuropa@tiscali.co.uk> wrote:
> Rowland, just a further thought, you haven't set it up so that it's trying to
retract the wheel too far/ too high? Whereas the undercarriage downlock gate
and set up IS critical I don't think the exact position of the undercarriage
lever UP lock gate is quite so important. Obviously you want it up as much as
possible and not too low but it can't of course go up too far. Adjusting the
rear latching face of the upgate rearwards slightly would mean the wheel wouldn't
lock up quite as far but it might then not foul the items you mentioned.
You would then have to completely re-set up the flap retraction adjustment again
with probably a new flap retraction horn etc.!
Jon - thanks for your message (and thanks too to Alan, Keith, Ron and Alfred for
their helpful contributions to this topic).
I was coming to the same conclusion as you, that the slot for the retract lever
must be slightly too long. Not sure why this should be as my journal (and my
memory!) doesnt seem to indicate that I extended the slot from the as-supplied
state. Anyway, I think that will be the answer to my problem - in effect, dont
try to retract the gear so much!
As you say, once I have restored the suspension block compression to the correct
value and checked for correct over-centring of the mechanism in the down position,
Ill have to file the up" gate so that the lever latches _before_ any contact
between the U/C and other parts. Then go back to the flap control; first
get a new FL19 from the factory then go through the whole adjustment process
again to find the right position for the hole in FL19.
Once its all done, I wonder would there be any need to provide some sort of stop
to prevent the retract lever moving too far forward? I think Ill worry about
that when I see how much aftwards extension of the up gate is needed.
Thanks again to the Europa community for all your help and encouragement.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
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