Today's Message Index:
----------------------
1. 03:02 AM - Re: Mod 60 fuel sender - linearised? (Ivor)
2. 03:47 AM - Re: Re: of interest (Gaham Singleton)
3. 05:31 AM - Re: Re: of interest (Bud Yerly)
4. 05:45 AM - Socket size of wheel nut (William Daniell)
5. 06:45 AM - Re: Socket size of wheel nut (Ivor)
6. 10:55 AM - Re: of interest (n7188u)
7. 02:29 PM - Re: of interest (n7188u)
8. 03:02 PM - Re: Re: Socket size of wheel nut (William Daniell)
Message 1
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Subject: | Re: Mod 60 fuel sender - linearised? |
Hi Graham
Wema is the fuel sender unit in my aircraft, the web link is
https://wema.co.uk/collections/caravans-mobile-homes/products/fuel-sender?variant=29346567239
It gives you the information you require about what gauge to use,
My sender goes into the main side of the fuel tank (port) and reads in
8 increments but the later ones do 12,
Ivor
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490879#490879
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Chris
Somewhere accurate co-ordinates are on the web. It's 25 years since I had much
to do with it and several computer failures too.
Kingsley Hurst might have them? You could ask Andy Draper but he left Europa many
years ago.
Put the message out on the Club forum, someone should know but it's all from at
least 15 years ago. Seems like 6 months to me but time leaves me behind these
days!
Graham
> On 13 Aug 2019, at 17:06, n7188u <chmgarb@gmail.com> wrote:
>
>
> Good points Graham and will probably do the items you mention.
>
> I am planning to paint only stabs, ailerons and maybe flaps white so I can balance
before first flight and not worry afterwards if I paint the whole plane.
The rest will be primer and thin coat of sealer. This was a Lancair builder center
did with their planes (Evolutions) we had here at our field.
>
> I used to fly a longEZ with VGs and it flew nice but I kept breaking them when
I handled the plane or cleaned it so my current one has none (and a GU canard!).
But my EZ flies great, very docile and the canard stalls at 58 knts so no
complains. yes, it will pitch down in rain (or not take off in rain and heavy)
but I don't fly in rain often.
>
> Regarding the wing LE, how can you ensure it has the correct profile? Are there
coordinates for this airfoil? Even with the coordinates it sounds that it would
be challenging to ensure the entire span is accurate or do you check at some
discrete span points and then ensure the thing is fairly smooth in between?
>
> Regards,
> Chris.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=490843#490843
>
>
>
>
>
>
>
>
>
Message 3
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Pete,
No noticeable difference other than you can look out and see the dirt flowi
ng with the water making a nice visual display of the laminar to turbulent
transition layer. The plane does slow down but in heavier rain, comes heav
ier turbulence so I normally slow down as we get vertical development in ou
r rain showers.
The problem with the XS is it is excessively heavy because it is extremely
easy to add more stuff.
Best Regards,
Bud Yerly
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s 10
________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of Pete <peterz@zutrasoft.com>
Sent: Wednesday, August 14, 2019 9:44:17 PM
Subject: Re: Europa-List: Re: of interest
Great write-up Bud...... how does the XS do in heavier rain?
On Aug 14, 2019, at 8:32 PM, Bud Yerly <budyerly@msn.com<mailto:budyerly@ms
n.com>> wrote:
Chris,
Getting the leading edge profiled correctly was a bit of a problem in the C
lassic foam wing. It comes down to a good long block and a root and tip te
mplate and of course a good eye. Technique on rolling the leading edge by
rolling off the edge at a 45 gives a uniform leading edge. The XS is out o
f the mold pretty good. Though I=92ve seen wings built on saw horses that
were a bit wonky, but trimmed out OK. Good flat tables are the best wing s
kin gluing jig.
Attached is my LSA vortex generator testing I did for the Europa LSA. Spea
ks for itself. I like these Aussie VGs. Great results after moving them a
round the plane was acceptable as an LSA or for STOL ops.
Weight, CG, and wing smoothness are all essential for efficient cruising, b
ut so is cooling drag. Pay attention to sealing your cooling duct gaps. S
ee my Cooling discussions on my website. It is nice to get the benefit of
an increase in speed and cool better. Most of the drag on a light airplane
is cooling drag so make sure you follow the rule. Think like an air molec
ule that is pretending to be a naughty teenager looking to get out of work.
If there is a gap to escape work, they will rush to go through it, result
ing in low productivity, and drag. See www.customflightcreations.com<http:
//www.customflightcreations.com> for some of the other building and flying
articles.
Since the Europa wing is very well designed and up to 1450 pounds, has a re
asonable laminar flow and nearly perfect elliptic wing lift distribution, s
o aerodynamic gimmicks like wing fences, winglets, and VGs. I have not fou
nd it necessary to fly with the wings in the raw or just primed and sealed.
The stall of the Europa is slightly less abrupt than a typical series 6 a
irfoil due to excellent leading edge contour. The best stall taming is wit
h the POH recommended stall strips as it adds great pre-stall warning feel
prior to the actual break. You will find modifying the wing shape to impro
ve flow will be an exercise yielding nothing. I=92ve done tuft tests, and
the wing tends to have a nice span wise root to tip stall progression provi
ding the wings are built the same and square of course. The stall of an un
modified wing begins separation at the root, the downwash over the stab dec
reases, the nose drops and the root begins to fly, then the nose rises and
it repeats. (See stall on youtube: Europa 159HR Flight.) The POH stall str
ip allows a complete aft stick stall in most aircraft with the stick full b
ack and a gentle nose down rumble and shake. Don=92t let the nose wader as
it will rumble off opposite to the ball. Flaps down depends on the flap r
igging. The rumble begins only just prior to the stall and the nose drops
like any other large flapped conventional tractor aircraft. Adding VGs mad
e for an aircraft with excellent control but it sank like a rock at 40 KTS
with no low speed warning. Like Buzz Lightyear, I was, =93Falling With St
yle=94.
Many pilots have never flown a light aircraft with the center of mass so ne
ar the CG, so a little rudder, P factor, or a droopy flap really affects th
e yaw/roll in the Europa. Case in point, the nose is really pulled to the
left just at the stall break even at idle power! This results in a left wi
ng drop as one would expect. The stall strips give excellent feel approach
ing a clean stall power on or off.
Watch out for that old, I think I can make it better, which I found added w
eight, build time, and tweaking. Keep it light, maintenance accessible, an
d smooth, and you will be rewarded.
Get the family into the build, but don=92t be Captain Bligh, let them have
fun and help (well for an hour or two when you need an extra set of hands).
Remember, =93Ain=92t nobody happy unless Momma is happy=94!
Best Regards,
Bud Yerly
Custom Flight Creations, Inc.
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Window
s 10
________________________________
From: owner-europa-list-server@matronics.com<mailto:owner-europa-list-serve
r@matronics.com> <owner-europa-list-server@matronics.com<mailto:owner-europ
a-list-server@matronics.com>> on behalf of n7188u <chmgarb@gmail.com<mailto
:chmgarb@gmail.com>>
Sent: Tuesday, August 13, 2019 12:06:26 PM
t@matronics.com<mailto:europa-list@matronics.com>>
Subject: Europa-List: Re: of interest
rb@gmail.com>>
Good points Graham and will probably do the items you mention.
I am planning to paint only stabs, ailerons and maybe flaps white so I can
balance before first flight and not worry afterwards if I paint the whole p
lane. The rest will be primer and thin coat of sealer. This was a Lancair b
uilder center did with their planes (Evolutions) we had here at our field.
I used to fly a longEZ with VGs and it flew nice but I kept breaking them w
hen I handled the plane or cleaned it so my current one has none (and a GU
canard!). But my EZ flies great, very docile and the canard stalls at 58 kn
ts so no complains. yes, it will pitch down in rain (or not take off in rai
n and heavy) but I don't fly in rain often.
Regarding the wing LE, how can you ensure it has the correct profile? Are t
here coordinates for this airfoil? Even with the coordinates it sounds that
it would be challenging to ensure the entire span is accurate or do you ch
eck at some discrete span points and then ensure the thing is fairly smooth
in between?
Regards,
Chris.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490843#490843
st Email Forum -
pa-List">http://www.matronics.com/Navigator?Europa-List
p; - MATRONICS WEB FORUMS -
ums.matronics.com<http://ums.matronics.com>
p; - NEW MATRONICS LIST WIKI -
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p; - List Contribution Web Site -
p; -Matt Dralle, List Admin.
http://www.matronics.com/contribution
<LSA Europa Flight Test Final.pdf>
<Vortex Generators for STOL-LSA Mod Version 1.pdf>
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Subject: | Socket size of wheel nut |
Im being lazy. Does anyone know the size the main gear wheel nut? (In
recent maintenance involving several people mine disappeared, i suspect it
took a trip, as thing often do in that situation)
Many thanks will
William Daniell
+1 786 878 0246
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Subject: | Re: Socket size of wheel nut |
Yes its 1 5/16 inch same size as an old Austin mini flywheel bolt
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490884#490884
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Thanks for the detailed write up Bud. And thanks graham for the info on the coordinates.
Bud, I have a feeling that once I start flying I will be too lazy to start playing
with changing anything in the plane. It always happens. I still intend to
fly on primer just because I won't have the money initially to have a nice paint
job done (although I am very good at painting myself and have good equipment).
I am not sure I want to go through the exercise of making a spray booth at
home again. I will see what happens when I get to that point.
Profiling the wing is not something I am crazy about. Just got a little carried
away by the inspiring videos for the AR5 and AR6. Neat stuff. I hate sanding
in general and per your info it seems the airfoil is not that sensitive to variation
(or it's molded pretty good as you mention). A nice true stall will be
a must for me although I had my share of nasty stalling airplanes in my life.
I do want to work on the cooling part (I have your paper plus a bunch of good info
from others in the forum). I thought about toying with the root fairing after
I get the plane flying. The existing fairing does look a bit simplistic but
it begs to ask whether the Europa really benefits from interference drag reduction.
No, I don't want to work more than needed to get the plane in the air but it would
be neat to have small projects to work on after it's done. With my current
work and family situation I am not really using the airplanes for traveling so
being down a little here and there doesn't hurt me (and the fact I have another
cruising plane at my disposal).
But I will fly the heck out of it for the first year without doing anything to
it for sure :)
Best,
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490887#490887
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Bud,
You can tell I am bored :) I read the papers you posted and find the information
fascinating. I always wondered if my Europa could be registered as an LSA (not
that I need to do that now but I am not getting any younger). it seems from
your write up that it should be possible to do. I still need to read the whole
in detail (at work now).
Can a plane that has been already registered as an experimental be changed over
to LSA? You mention in your paper that you can go for LSA at the beginning but
what if you tell the airplane you are substantially modifying the airplane and
want to obtain a new Airworthiness Certificate?
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490892#490892
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Subject: | Re: Socket size of wheel nut |
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