Today's Message Index:
----------------------
0. 12:06 AM - List Fund Raiser (Matt Dralle)
1. 04:11 AM - Re: Why do you not want to wheel land a monowheel? (Jim Brown)
2. 05:18 AM - does rotax need egt? (Rowland Carson)
3. 06:04 AM - Re: does rotax need egt? (David Joyce)
4. 06:29 AM - Re: Why do you not want to wheel land a monowheel? (Peter Jeffers)
5. 07:54 AM - Re: Why do you not want to wheel land a monowheel? (Bud Yerly)
6. 09:25 AM - Re: does rotax need egt? (Rowland Carson)
7. 11:27 AM - 914 Turbo Oil Leak Woes part deux (Bud Yerly)
8. 11:54 AM - Re: does rotax need egt? (David Joyce)
9. 12:22 PM - Re: 914 Turbo Oil Leak Woes part deux (Jim Brown)
10. 12:39 PM - Re: Oil in exhaust, Rotax 914 (Frans Veldman)
11. 12:43 PM - Re: Coolant overheating (Frans Veldman)
Message 0
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| Subject: | List Fund Raiser |
Dear Listers,
Just a reminder that November is the Matronics Email List Fund Raiser month. There
are some very nice incentive gifts to choose from as well!
Please make your Contribution today:
http://www.matronics.com/contribution
Thank you!
Matt Dralle
Matronics Email List Administrator
Message 1
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| Subject: | Re: Why do you not want to wheel land a monowheel? |
The monowheel can NOT be wheel landed.... The flaps will blanket the elevat
or at about 50-60 knots. The plane will do a nose pitch down....
-
Jim Brown
--- On Wed, 11/11/09, rparigor@suffolk.lib.ny.us <rparigor@suffolk.lib.ny.u
s> wrote:
From: rparigor@suffolk.lib.ny.us <rparigor@suffolk.lib.ny.us>
Subject: Europa-List: Why do you not want to wheel land a monowheel?
Why do you not want to wheel land a monowheel?
http://www.youtube.com/watch?v=__QKkLBwIoQ&feature=related
Ron Parigoris
=0A=0A=0A
Message 2
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| Subject: | does rotax need egt? |
Subject line nearly says it all.
I'm considering my panel layout and wondering if there's any point in
including an instrument to show EGT for the intended Rotax 912S
installation.
My initial reaction is that as there's no mixture control, EGT
indication does not add much to the CHT/coolant indication that comes
as standard. But I'm open to other opinions.
Has anyone found EGT indicators really important or useful in a Rotax
912S installation?
regards
Rowland
--
| Rowland Carson LAA #16532 http://home.clara.net/rowil/aviation/
| 1300 hours building Europa #435 G-ROWI e-mail <rowil@clara.net>
Message 3
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| Subject: | Re: does rotax need egt? |
Rowland, I would strongly recommend fitting a Rotax Flydat or one of the
more modern engine monitoring systems that will monitor EGTs, oil T & P RPM
coolant temp and will flash a bright light at you if any of them depart
marginally from the norm. You can then spend much more time looking out and
making sure you don't ram something! And you save a lot of panel space.
Regards, David Joyce, G-XSDJ
----- Original Message -----
From: "Rowland Carson" <rowil@clara.net>
Sent: Wednesday, November 11, 2009 12:40 PM
Subject: Europa-List: does rotax need egt?
>
> Subject line nearly says it all.
>
> I'm considering my panel layout and wondering if there's any point in
> including an instrument to show EGT for the intended Rotax 912S
> installation.
>
> My initial reaction is that as there's no mixture control, EGT indication
> does not add much to the CHT/coolant indication that comes as standard.
> But I'm open to other opinions.
>
> Has anyone found EGT indicators really important or useful in a Rotax 912S
> installation?
>
> regards
>
> Rowland
> --
>
>
>
Message 4
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| Subject: | Why do you not want to wheel land a monowheel? |
Ron,
Believe me, don't try it unless you like expensive excitement.
Pete Jeffers
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of
rparigor@suffolk.lib.ny.us
Sent: 11 November 2009 06:11
Subject: Europa-List: Why do you not want to wheel land a monowheel?
Why do you not want to wheel land a monowheel?
http://www.youtube.com/watch?v=__QKkLBwIoQ
<http://www.youtube.com/watch?v=__QKkLBwIoQ&feature=related>
&feature=related
Ron Parigoris
Checked by AVG - www.avg.com
07:40:00
Message 5
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| Subject: | Re: Why do you not want to wheel land a monowheel? |
Ron,
The only guy I have seen do it is Ken Carpenter, and I believe he said,
"Not for the beginner".
The main wheel is set 5-6 inches ahead of where the normal tail dragger
like a Champ is (axel on the leading edge of the MAC). This position is
due to fitting the retractable wheel into the fuselage. This geometry
means that the slightest vertical component to your touchdown will cause
the nose to rise abruptly. Not really a bounce but a pitch up caused by
the forward gear and the moment arm from the gear to the center of
gravity. Stab authority is decreased below 50 KIAS as the downwash of
the wing and flaps hits the concrete and flattens out which is
exacerbated by how close to the ground the plane is. This downwash
change unloads the stab and results in an uncomfortable pitch down just
before touchdown exacerbating the problem. The low speed requires
larger uncomfortable control inputs, which leads to under or even over
control. So as the nose pitches down, (remembering that expensive prop)
just as you touch, the fuselage momentum forces the nose up. The pitch
changes cause P factor changes which causes a yaw which drops a wing
which causes an outrigger to touch which ends up in a go around
(hopefully) or ground loop (typical). The U-2 has a similar problem. I
believe the early USAF military Pilatus PC 6 was tough to wheel land
with a full load, but tail changes and of course it's very high wing
make it acceptable.
Keep it straight. Plant the tail wheel first. Keep the stick back and
don't relax until in the chocks.
Bud
----- Original Message -----
From: rparigor@suffolk.lib.ny.us<mailto:rparigor@suffolk.lib.ny.us>
To: Europa<mailto:europa-list@matronics.com>
Sent: Wednesday, November 11, 2009 1:11 AM
Subject: Europa-List: Why do you not want to wheel land a monowheel?
Why do you not want to wheel land a monowheel?
http://www.youtube.com/watch?v=__QKkLBwIoQ&feature=related<http://www
.youtube.com/watch?v=__QKkLBwIoQ&feature=related>
Ron Parigoris
www.aeroelectric.com<http://www.aeroelectric.com/>
www.buildersbooks.com<http://www.buildersbooks.com/>
www.homebuilthelp.com<http://www.homebuilthelp.com/>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
http://www.matronics.com/Navigator?Europa-List<http://www.matronics.com/N
avigator?Europa-List>
Message 6
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| Subject: | Re: does rotax need egt? |
At 2009-11-11 14:04 +0000 David Joyce wrote:
>I would strongly recommend fitting a Rotax Flydat or one of the more
>modern engine monitoring systems that will monitor EGTs, oil T & P
>RPM coolant temp and will flash a bright light at you if any of them
>depart marginally from the norm
David - thanks, I have already purchased a MGL box that does that
sort of stuff (but in a lot less space than a Flydat). I guess I
should have made that clear.
My query should therefore be re-stated as:
Should I bother to buy EGT probes for a 912S installation to use with
my engine monitor instrument?
With no mixture control, if I saw abnormal EGT indications, what
actions could I take in response?
regards
Rowland
--
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowil@clara.net> http://home.clara.net/rowil/
| Twitter: rowland_carson Facebook: Rowland Carson
Message 7
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| Subject: | 914 Turbo Oil Leak Woes part deux |
914 Owners,
While beating my head against the wall on my leaky turbo I reviewed all
that I did.
One...My engine was a used 914 and the turbo was drippy.
Two...I gave the turbo to a friend who works for a reputable turbo
rebuild facility but not the Garrett factory.
Three...A new standard Garrett rebuild kit was installed and the turbo
refurbished and returned.
Result:
Initial start up and boost are normal, but I have this pesky leak after
about two or three days.
The ball check valve is not leaking when removed and tested.
The turbo seal is leaking. Why?
The Rotax turbo is a few thousands different in diameter than a standard
Garrett as it is a Rotax Proprietary Part requiring a turbo replacement
and not just a rebuild kit. If I continue to run with what I have, I'm
sure it will eventually fail.
Solution:
Well it is off to Garrett or Jason Parker of Extreme Aircraft Engines to
get the seals redone properly, but at a higher price now. Jason has a
line on the Exact Rotax turbo core replacement at about $750. Jason is
at
http://www.extremeaircraftengines.com<http://www.extremeaircraftengines.c
om/>
Bottom Line:
Don't just send your turbo to anybody.
Bud Yerly
On a side note,
Jason Parker has sold 8 engines just in the last half of this year and
is under contract by Sea Ray for a full firewall forward. For the
Europa he has a full kit which only nicks the passenger foot well but
otherwise fits very well. Wire and fuel now are pre set up and the
engine is as plug and play as you can get. Prices with intercooler are
just below 914 prices and are zero time. I don't make a cent off of
them so this is an unsolicited endorsement.
Message 8
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| Subject: | Re: does rotax need egt? |
Rowland, I suspect you only get real value out of it if you monitor all 4
EGTs, as in the Flydat. I am no expert but I would expect that ignition
problems or compression problems in one cylinder would throw up unequal
temps. so letting you know where to start looking for the problem.There is
also the point that if your mixture control systemdoes go up the creek, then
it might tell you so before the whole thing burns up! I assume that
gubbins in one carburettor can lead to leaning of that bank of cylinders. It
also shows you whether your cylinder/exhaust cooling is even (which is not
the case in mine - the front 2 are significantly cooler than the others),
and presumably would give you warning that a baffle or some other part of
the cooling system had come adrift. Regards, David
----- Original Message -----
From: "Rowland Carson" <rowil@clara.net>
Sent: Wednesday, November 11, 2009 4:25 PM
Subject: Re: Europa-List: does rotax need egt?
>
> At 2009-11-11 14:04 +0000 David Joyce wrote:
>
>>I would strongly recommend fitting a Rotax Flydat or one of the more
>>modern engine monitoring systems that will monitor EGTs, oil T & P RPM
>>coolant temp and will flash a bright light at you if any of them depart
>>marginally from the norm
>
> David - thanks, I have already purchased a MGL box that does that sort of
> stuff (but in a lot less space than a Flydat). I guess I should have made
> that clear.
>
> My query should therefore be re-stated as:
>
> Should I bother to buy EGT probes for a 912S installation to use with my
> engine monitor instrument?
>
> With no mixture control, if I saw abnormal EGT indications, what actions
> could I take in response?
>
> regards
>
> Rowland
> --
>
>
>
Message 9
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| Subject: | Re: 914 Turbo Oil Leak Woes part deux |
Hi Bud
-
Thanks for the update on the turbo. When mine craps out, at least I"ll know
where to send for overhaul...
-
On a different note.... Thanks for the "paper" on the cooling of the 914 in
monowheels...There is a lot of experience in that paper.- Most of us her
e in Florida have- cooling problems and some have been solved, but most s
till linger despite our efforts to cure the "uncurable". In the air I run u
sually 190 degrees both on oil and coolant.. On the ground, coolant will re
ach redline by time I,m released for takeoff by the tower.
-
Jim Brown
--- On Wed, 11/11/09, Bud Yerly <budyerly@msn.com> wrote:
From: Bud Yerly <budyerly@msn.com>
Subject: Europa-List: 914 Turbo Oil Leak Woes part deux
914 Owners,
-
While beating my head against the wall on my leaky turbo I reviewed all tha
t I did.
-
One...My engine was a used 914 and the turbo was drippy.
-
Two...I gave the turbo to a friend who works for a reputable turbo rebuild
facility but not the Garrett factory.
-
Three...A new standard Garrett rebuild kit was installed and the turbo refu
rbished and returned.
-
Result:
Initial start up and boost are normal, but I have this pesky leak after abo
ut two or three days.-
-
The ball check valve is not leaking when removed and tested.
-
The turbo seal is leaking.- Why?
-
The Rotax turbo is a few thousands different in diameter than a standard Ga
rrett as it is a Rotax Proprietary Part requiring a turbo replacement and n
ot just- a rebuild kit.- If I continue to run with what I have, I'm sur
e it will eventually fail.
-
Solution:
Well it is off to Garrett or Jason Parker of Extreme Aircraft Engines to ge
t the seals redone properly, but at a higher price now.- Jason has a line
on the Exact Rotax turbo core replacement at about $750.- Jason is at ht
tp://www.extremeaircraftengines.com
-
Bottom Line:
Don't just send your turbo to anybody.
-
Bud Yerly
-
On a side note,
Jason Parker has sold 8 engines just in the last half of this year and is u
nder contract by Sea Ray for a full firewall forward.- For the Europa he
has a full kit which only nicks the passenger foot well but otherwise fits
very well.- Wire and fuel now are pre set up and the engine is as plug an
d play as you can get.- Prices with intercooler are just below 914 prices
and are zero time.- I don't make a cent off of them so this is an unsoli
cited endorsement.
-
-
=0A=0A=0A
Message 10
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| Subject: | Re: Oil in exhaust, Rotax 914 |
Three weeks ago I wrote:
> I have reasons to believe that the oil was already past the seal before
> I started the engine. In the months that the engine didn't run, oil has
> seeped past the seal.
Now, three weeks later, I again started the engine. No oil was thrown
out. Not a single drop. So either the leak rate is so small that in
three weeks time no detectable oil has leaked, or the problem was of an
incidental nature.
Frans
Message 11
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| Subject: | Re: Coolant overheating |
Graham Singleton wrote:
> <grahamsingleton@btinternet.com>
>
> Run at 60% until hot, then shut down and wait till it is cool before
> running again. the time you can run will slowly increase as the rings
> break in.
Decided today to run it without the cowling. That made a huge
difference! I could easily apply 60% power and also managed to make a 4
minute excursion to full power. I will repeat this a few times to let
the rings set.
Frans
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