Today's Message Index:
----------------------
1. 09:06 AM - Re: Boiling Point (Rob Housman)
2. 09:58 AM - Boiling Point (Dave Moore)
3. 10:06 AM - Re: Boiling Point (Frans Veldman)
4. 12:42 PM - Port rudder cable hole in sternpost (rparigoris)
5. 03:45 PM - Radiator Relief (Carl Pattinson)
6. 06:34 PM - Re: Radiator Relief (Robert Borger)
7. 08:37 PM - Re: Port rudder cable hole in sternpost (craig bastin)
Message 1
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At http://www.engineeringtoolbox.com/ethylene-glycol-d_146.html the boiling
point of a 50% mixture of pure ethylene glycol and pure water is given as
107.2 deg C but this is at atmospheric pressure at sea level. Antifreeze
also contains other stuff (such as corrosion inhibitors) that will further
increase the boiling point, and at higher pressure the boiling point is
elevated further. I haven't got the required reference materials at hand,
nor do I recall the long ago learned equations used to make the adjustment
for pressure, so let's just say that 120 deg C looks close to the boiling
point. A detailed discussion of antifreeze at elevated temperatures can be
found at http://www.newton.dep.anl.gov/askasci/chem03/chem03987.htm
Also, how accurately is the temperature and pressure known? While the
temperature probably correct to within a few tenths of a degree I suspect
that the pressure is likely to be less accurately known.
Best regards,
Rob Housman
Irvine, CA
Europa XS Tri-Gear
A070
Airframe complete
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Goff
Sent: Friday, May 29, 2009 11:31 PM
Subject: Europa-List: Boiling Point
Does anyone know the centigrade boiling point of 50/50 glycol/water coolant
in a 912ULS with a 1.2 bar pressure cap ?
We can exceed the 120C maximum on long taxis on hot days but do not seem to
lose any coolant. So at what temperature does it actually boil?
Goff Moore
G-CHOX
Visit - www.EuropaOwners.org
Message 2
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Goff,
I've looked up your question on the boiling point of 50:50 glycol:water
at about 1 barG.
See:
http://auto.howstuffworks.com/cooling-system7.htm
Looks like the 50:50 glycol:water boiling point at atmospheric pressure
is 106 deg C
At 1-1.2 BarG, the boiling point increases by about 25 deg C, i.e. its
boiling point will be about 130 deg C.
(Usual caveats about getting data from the internet, apply..!)
Regards,
Dave Moore
Aberdeen, UK
Message 3
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| Subject: | Re: Boiling Point |
Goff wrote:
>
> Does anyone know the centigrade boiling point of 50/50 glycol/water coolant in
a 912ULS with a 1.2 bar pressure cap ?
In my setup, with 1.2 bar pressure cap and a 50/50 mixture, and two
independant gauges (CHT & coolant), I can reach 130 degrees without
spoiling coolant. At these temperatures however, I can hear after
shutdown some "boiling noises", so the coolant reaches at some locations
the boiling point (as can be expected), but doesn't spill yet.
-
Frans Veldman
Message 4
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| Subject: | Port rudder cable hole in sternpost |
Curiosity.
Anyone have picture of your port rudder cable hole in sternpost of a standard XS
with tailwheel?
I needed to make a "Grad Canyon" sized slot that is closer to the tailwheel spring
than I would have liked.
Any comments welcome.
Page 2, picture 101 and 102:
http://www.europaowners.org/modules.php?set_albumName=album223&op=modload&name=gallery&file=index&include=view_album.php
Ron Parigoris
Visit - www.EuropaOwners.org
Message 5
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X-mailer: iAVMailScanner 1.5.6.4
Anyone used this stuff?
Looks interesting.
http://www.agriemach.com/product_info.php?cPath=0_60&products_id'3
----- Original Message -----
From: <europa@pstewart.f2s.com>
Sent: Monday, May 25, 2009 9:07 PM
Subject: Europa-List: Rotax tacho
>
>
>
> Many thanks to those who replied re Rotax tacho - 200 ohm resister worked
> a
> treat. Just put it across the terminals of the tacho rather than the coils
> as
> pictured in the Rotax owners 'fix' document. Do believe we may be running
> short
> of jobs to do.
>
> Regards
>
> Paul
> G-GIDY
>
>
_______________________________________
No viruses found in this outgoing message
Scanned by iolo AntiVirus 1.5.6.4
http://www.iolo.com
Message 6
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| Subject: | Re: Radiator Relief |
FYI also check out:
http://www.turbomagazine.com/features/0703_turp_cooling_system_additives/test_results.html
for more information on coolant additives. Seems like they may work.
Bob Borger
Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S
http://www.europaowners.org/N914XL
Aircraft Flying!
3705 Lynchburg Dr.
Corinth, TX 76208
Home: 940-497-2123
Cel: 817-992-1117
On May 30, 2009, at 17:44, Carl Pattinson wrote:
> >
>
> Anyone used this stuff?
>
> Looks interesting.
>
> http://www.agriemach.com/product_info.php?cPath=0_60&products_id'3
>
Message 7
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| Subject: | Port rudder cable hole in sternpost |
I had the same "large" hole. Due to the hinge position and geometry of the
whole arrangement
I dont see another option except for the generous hole.
craig
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of rparigoris
Sent: Sunday, 31 May 2009 5:44 AM
Subject: Europa-List: Port rudder cable hole in sternpost
Curiosity.
Anyone have picture of your port rudder cable hole in sternpost of a
standard XS with tailwheel?
I needed to make a "Grad Canyon" sized slot that is closer to the tailwheel
spring than I would have liked.
Any comments welcome.
Page 2, picture 101 and 102:
http://www.europaowners.org/modules.php?set_albumName=album223&op=modload&na
me=gallery&file=index&include=view_album.php
Ron Parigoris
Visit - www.EuropaOwners.org
Checked by AVG - www.avg.com
17:53:00
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