Today's Message Index:
----------------------
1. 01:21 AM - Re: Noisy Europa (nwcmc@tiscali.co.uk)
2. 01:34 AM - Fuel System Vents (flyingphil2)
3. 05:12 AM - Re: Fuel System Vents (Rowland Carson)
4. 06:12 AM - Re: Wire marking (Rick Stockton)
5. 06:12 AM - Re: Fuel System Vents (Rick Stockton)
6. 10:43 PM - Europa XS Motorglider Trigear Stage 1 ~ 3 70 % done for Sale (Thomas Scherer)
Message 1
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| Subject: | Re: Noisy Europa |
I will do when I get a chance. I am away from home at the moment.
The most important thing to appreciate is that any hole cut in the roof section
needs substantial reinforcing as this is a strength critical area. This wasn't
difficult to achieve. It required a layup of 6 plies of 'bid' over a 3mm ply
panel which was about 150mm square.
The work was definitely worthwhile as it ensures ventilation to the face rather
than the knees. Even with the UK climate there are times in summer when it makes
the difference.
Nigel
----Original Message----
From: n914va@bvunet.net
Subj: Re: Europa-List: Noisy Europa
Clean
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Could you post some pictures of how you constructed this vent and how you control
the opening width?
Vaughn Teegarden
----- Original Message -----
From: nigel charles
Sent: Saturday, June 06, 2009 16:39
Subject: RE: Europa-List: Noisy Europa
My overhead eyeball vents are fed from an outward opening flap in the roof. I have
the flap fully open for take-off and landing but have it only just cracked
open in the cruise even on a hot day. The noise level drops dramatically with
it like this so perhaps if you can control the input flow to the eyeball vents
you will control the noise as well as the flow. High pressure air against a
partially open eyeball vent is likely to be noisier than if the source is controlled
before it gets to the eyeball.
Nigel Charles
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href="http://www.matronics.com/contribution">http://www.matronics.com/c
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Message 2
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| Subject: | Fuel System Vents |
I'm in the process of making the fuel vent pipes. I have two pieces of stainless
steel tubing, each 150mm long. I need to bend them through 90deg, drill 2
holes in the back and bond them into the fuselage. The manual has no dimensions
for this and I guess it's not too critical but what have other people done?
Dimensions I'm looking for would be:
1. Length from vent forward tip to start of bend.
2. Approx radius of bend.
3. Height of horizontal vent tube above the fuselage skin
4. How much tubing ends up protruding through the lower skin?
Rough dimensions would be great if anyone has a few minutes to spare.
Thanks,
Phil
Visit - www.EuropaOwners.org
Message 3
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| Subject: | Re: Fuel System Vents |
At 2009-06-07 11:31 +0300 flyingphil2 wrote:
>I'm in the process of making the fuel vent pipes. I have two pieces
>of stainless steel tubing, each 150mm long. I need to bend them
>through 90deg, drill 2 holes in the back and bond them into the
>fuselage. The manual has no dimensions for this and I guess it's
>not too critical but what have other people done?
>
>Dimensions I'm looking for would be:
>1. Length from vent forward tip to start of bend.
>2. Approx radius of bend.
>3. Height of horizontal vent tube above the fuselage skin
>4. How much tubing ends up protruding through the lower skin?
>
>Rough dimensions would be great if anyone has a few minutes to spare
Phil - I can't give you any dimensions as I haven't an example to
hand, but i can offer some observations.
When Tim Houlihan & I were preparing for the Europa Club tour of
Ireland last year, he was having a lot of trouble getting sensible
readings from both his sight gauge (exactly as the manual) and his
electronic gauge (which uses a pressure sensor like Tony K's but at
present has a different display device.
We fiddled about with the vent system, found and cured some leaks at
joints, but nothing seemed to improve the reliability of the
indications. By blowing or sucking carefully on the vent pipe on the
ground, we could demonstrate that the sight gauge and the electric
one were telling the same story. Aloft, both gave off-scale
indications at certain parts of the flight envelope - and my memory
is a bit hazy here, but it seemed that the fuselage angle of attack
appeared to affect whether we got sensible or silly answers. I don't
think we ever got around to it before getting fed up with test
flights, but I wanted to try taping over the holes at the back
because I suspected they were so close to the fuselage top surface
that they might have been going in and out of the boundary layer and
thus affecting the pressure seen in the vent pipe. Another test would
be to block the main end of the vent and leave the back holes open to
see how indications differed.
For what it's worth, I'm intending to use Graham Singleton's version
of the fuel system (with ali pipes) and have the vent pointing down
at the bottom of the fuselage (so that vented fuel from over-filling
goes on the grass rather than over the fuselage), which should also
eliminate any of the above issues. I'll tell you later if it doesn't!
regards
Rowland
--
| Rowland Carson LAA #16532 http://home.clara.net/rowil/aviation/
| 1280 hours building Europa #435 G-ROWI e-mail <rowil@clara.net>
Message 4
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| Subject: | Re: Wire marking |
You are the mechanic/engineer in change.-- Its what you want it to be.
- I took the system I was working on "Navigation -lites" became LN-1, R
N-1 in the wings, "Aileron trim" system- became AT-1 through AT-5,- Str
obe system became RS-1 through RS-4 and LS-1 - LS-4.
-
I printed these up on a sheet of paper then cut them out and placed them-
on the wires then cover with clear heat shrink tubing.-
-
I have two terminals strips back the back of the fire wall.- Ones positiv
e the other is ground or for our English friends Earth ground.- I place o
ne more in the panel just behind the trim switches.- This handles panel l
ites, trim power- aileron/elevator, flaps power up/down.- I used plastic
cannon plugs -for the trim system, but found out the hard way that I didn
't have enough space between the wing and fuselage to use the cannon plugs
and will go to three Molex plugs.-
-
Hope this ups.
-
-
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Here I go into the electric abyss: I am about to start the assembly of my
instrument panel. -I wonder:-How are the wires marked - physically? A
ny convention for assigning wire "names" base on purpose?-How about conne
ctors between the panel and airframe? Multiple molex or something larger c
ombining multiple feeds?-Any use for terminal strips inside the panel?-
Pictures are always appreciated.-Thanks-GRobertsA187Tucson, AZ--
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| Subject: | Re: Fuel System Vents |
Take a look at Bub's website.
-
http://www.customflightcreations.com/id21.html
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| Subject: | Europa XS Motorglider Trigear Stage 1 ~ 3 70 % done for |
Sale
With heavy heart I have to sell my partly built Europa XS MG Kit, Stages
1,2,3.
All flying surfaces are done (need filling and sanding).
Standing on Trigear
Top not yet bonded on
One wing (Carbon) done, one wing to build.
Cockpit module bonded in
Doors on Fuselage-top with shootbolt mechanism done.
All parts neccessary available (including tinted windows).
In my guess you'd need 1 year of build-time and an engine of your choice
to produce the finest travelling machine available.
Located near Berlin, Germany.
Asking price 20 % under factory new.
Contact me offlist at Thomas@Scherer.com
Sincerely,
<Thomas, N81EU>
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