Today's Message Index:
----------------------
1. 12:09 AM - Re: What exactly does the 4 UNI layup do on the wing root do? (Duncan & Ami McFadyean)
2. 12:36 AM - Congrats to Jeff,Cooling feedback for Bud (Remi Guerner)
3. 11:11 AM - Re: Pipe clamps (rampil)
4. 11:36 AM - wing root fairing flight tests (Fred Klein)
5. 02:16 PM - Re: Congrats to Jeff,Cooling feedback for Bud (Duncan & Ami McFadyean)
6. 03:45 PM - Re: Head Count for Rough River Fly in (CHUCK RHOADS)
7. 03:55 PM - Re: Re: Pipe clamps (Paul McAllister)
8. 06:18 PM - Re: Re: Pipe clamps (Fred Klein)
9. 07:20 PM - Re: Re: Pipe clamps (Paul McAllister)
Message 1
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Subject: | Re: What exactly does the 4 UNI layup do on the wing root |
do?
Prevents propagation of rupture of the forward "D-box" at ultimate load.
It was explained thus in one of the Factory Newsletters.
Duncan Mcf.
----- Original Message -----
From: "rparigoris" <rparigor@suffolk.lib.ny.us>
Sent: Thursday, September 10, 2009 6:38 AM
Subject: Europa-List: What exactly does the 4 UNI layup do on the wing root
do?
>
> <rparigor@suffolk.lib.ny.us>
>
> What exactly does the 4 UNI layup do on the wing root do?
>
> Perhaps tie the spar to the front and rear lift pins better than if it was
> not there?
>
> Thx.
> Ron Parigoris
>
>
> Visit - www.EuropaOwners.org
>
>
>
Message 2
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Subject: | Congrats to Jeff,Cooling feedback for Bud |
Hi all,
I am resending this message to clarify the temperature units:
I have been following the cooling discussion with great interest as I
have done my own modifications to the cowling over the years with good
but not 100% satisfactory results.
As for most Rotax equipped Europas, the main issue is overheating on the
ground at high ambient temperatures. Worst case is when you land, stop
for 5 minutes, start the engine for another flight and have to hold for
a long time due to traffic before being cleared for take off, especially
if there is no wind or you cannot face into it.
An effective validation test for any cooling improvement should be:
ambient temperature 30-35 degrees Celsius (90 Fahrenheit, to be adjusted
depending on where
you fly), no wind. After a short flight, taxi to the parking area, and
run the engine at high idle (2000-2200 RPM). Note the CHT every minute.
I would consider this test to be 100% satisfactory if I get the CHT
STABILIZED not higher than 110 deg C (230 F). Up to now I have not
managed to pass this test successfully at ambient temperatures above
23 deg C (67 F).
Could those who have done their own cooling modifications try this test
and let us know the results?
Best regards
Remi Guerner
F-PGKL, Monowheel, 912S, 696 hours
Message 3
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I do not believe the odor of mogas that has always been presenct in my Europa emanates
from any of the connections of the hose to connector hardware. Rather
some volatile components of the fuel seem to permeate through the hose itself.
When I replaced the factory supplied Gates R7 spec hoses this year with Gates
R9 hose, the smell of fuel was quite a bit reduced. R9 hose is fuel injection
rated hose with a specified lower permeance to fuel (also, longer working life).
I used bare hose aft of the tank selector switch, and stainless braided forward
of the switch and throughout the engine compartment.
Ira
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=262437#262437
Message 4
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Subject: | wing root fairing flight tests |
A year ago, I brought a sample of an enhanced wing root fairing to the
Rough River Europa Fly In. It was designed to allow for installation
during construction or easy retrofit to flying XSs, and is compatible
with the necessary clearances for transport on the standard trailer.
Information about it and photos can be viewed at:
http://www.matronics.com/photoshare/fklein@orcasonline.com.07.21.2008/
Since that time, I=92ve developed a companion molding for the underside,
and secondary moldings for the voids which open when flaps are
deployed. I=92ve completed the installation on my aircraft which is
still under construction.
After posting the photos which show a much cleaner fuselage / wing
intersection, a number of builders have enquired about and wondered
what effect, if any, the fairings have on performance of the Europa.
Up until now, I could not answer that question.
However, after much discussion, I shipped a set of upper and lower
fairings to Jeff Behrnes who is presently flying his XS trigear w/
912S and Airmaster prop, =93Baby Blue=94. Jeff, through his business, is
an expert on exotic tapes and adhesives, and he had proposed that he
could temporarily mount the fairings on his aircraft and do a series
of flight tests, then remove the fairings and fly the same profiles
without the fairings in order to determine whether or not, and to what
degree, the fairings affected flight characteristics. Those tests have
now been completed.
On a preliminary basis only, I can say it appears that the L/D during
low power-on glide with the fairings increases by between 11% and
14.3% at varying speeds.
Jeff's data shows modest improvements (between 2% and 4%) during
economy cruise and climb; there are, however, some anomalies between
Jeff's figures and data recorded by Justin Kennedy which we are
attempting to sort out. When these issues are resolved, I will post
all the data and methodology.
In the meantime, if anyone out there with an XS trigear, w/ a 912S,
and an Airmaster prop would be willing to fly some simple profiles and
record some baseline data, please contact me off list.
Cheers,
Fred
A194
Message 5
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Subject: | Re: Congrats to Jeff,Cooling feedback for Bud |
The only comparable data that I have was as follows:
20 minute ground at between 2500 and 4000rpm, CHT stabilised at 94C, OAT
12C.
If adjusted for a 30C OAT, then CHT would be 116C.
At 2500rpm, oil temp was cooling down through 109C, or 127C adjusted to
30C.
There was a moderate wind from behind and <1 hour on the engine, so
still tight.
Cooling modified thus:
Duncan McF.
----- Original Message -----
From: Remi Guerner
To: Europa-List Digest Server
Sent: Thursday, September 10, 2009 8:31 AM
Subject: Europa-List: Congrats to Jeff,Cooling feedback for Bud
Hi all,
I am resending this message to clarify the temperature units:
I have been following the cooling discussion with great interest as I
have done my own modifications to the cowling over the years with good
but not 100% satisfactory results.
As for most Rotax equipped Europas, the main issue is overheating on
the
ground at high ambient temperatures. Worst case is when you land, stop
for 5 minutes, start the engine for another flight and have to hold
for
a long time due to traffic before being cleared for take off,
especially
if there is no wind or you cannot face into it.
An effective validation test for any cooling improvement should be:
ambient temperature 30-35 degrees Celsius (90 Fahrenheit, to be
adjusted depending on where
you fly), no wind. After a short flight, taxi to the parking area, and
run the engine at high idle (2000-2200 RPM). Note the CHT every
minute.
I would consider this test to be 100% satisfactory if I get the CHT
STABILIZED not higher than 110 deg C (230 F). Up to now I have not
managed to pass this test successfully at ambient temperatures above
23 deg C (67 F).
Could those who have done their own cooling modifications try this
test
and let us know the results?
Best regards
Remi Guerner
F-PGKL, Monowheel, 912S, 696 hours
Message 6
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Subject: | Re: Head Count for Rough River Fly in |
Paul,=0A=0AMy wife and I plan to drive down for the day Saturday.=0A=0AChuc
k Rhoads A100-- 150 hours=0A-________________________________________
__________________=0AChuck Rhoads=0Acfrhoads@yahoo.com=0A322 Links Dr.=0ASi
mpsonville, KY 40067=0A(502) 410-1357 =0A=0A=0A=0A=0A______________________
__________=0AFrom: Paul McAllister <paul.the.aviator@gmail.com>=0ATo: europ
a-list@matronics.com=0ASent: Monday, September 7, 2009 8:10:36 PM=0ASubject
: Europa-List: Head Count for Rough River Fly in=0A=0A--> Europa-List messa
ge posted by: Paul McAllister <paul.the.aviator@gmail.com>=0A=0AHi All,=0A
=0ACould everyone who is intending to come to Rough River please reply to
=0Athis threaad.- From memory I have the following.=0A=0APaul & Jenny McA
llister=0ABud Yearly=0ABob Berube=0ABob Borger=0AJim & Heather Butcher=0AJe
ff Roberts=0AJeff & Mary Behrnes=0AJohn Lawton=0A=0ABud is looking for a pl
ace to bed down, our cabin is full, can any=0Aoffer a spot for him ?=0A=0AT
=========================0A
=0A=0A
Message 7
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Hi Ira,
I can echo your findings. I replaced all of my rubber hoses with fuel
injection hose along with the recommended clamps and I noticed a drop
in the fuel smell. The other thing that helped was to replace the
rubber elbow at the fuel filler with an aluminum elbow.
Regards, Paul
Message 8
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On Sep 10, 2009, at 3:51 PM, Paul McAllister wrote:
> I replaced all of my rubber hoses with fuel injection hose along
> with the recommended clamps and I noticed a drop in the fuel smell.
Paul,
When you say, "recommended clamps", are you talking about the small
worm-drive SS clamps, or something else?
Thanks,
Fred
PS...regrettably, I will not be joining the gang at RR.
Message 9
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Hi Fred,
No, the clamps came from NAPA and they are specifically for fuel
injection hose. With that all said, if I had it all over (don't we
say that a lot when we get older) I would do my fuel system in all
aluminum, with twin gascolators and a few other things, but that's
another story all by its self.
Paul
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