Today's Message Index:
----------------------
1. 02:43 AM - Re: Monowheel landing gear dampers (Kingsley Hurst)
2. 05:40 AM - Re: Monowheel landing gear dampers (GRAHAM SINGLETON)
3. 11:53 AM - Negative "G" (Fergus Kyle)
4. 12:23 PM - Voltage reading of 25V (Karl Heindl)
5. 02:33 PM - Re: Monowheel landing gear dampers (Kingsley Hurst)
6. 02:49 PM - Re: Monowheel landing gear dampers (Kingsley Hurst)
7. 04:32 PM - Re: Voltage reading of 25V (rampil)
8. 04:37 PM - Re: Voltage reading of 25V (Bud Yerly)
9. 06:22 PM - Re: Voltage reading of 25V (Karl Heindl)
10. 10:04 PM - Re: Voltage reading of 25V (Greg Fuchs)
Message 1
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| Subject: | Re: Monowheel landing gear dampers |
> Has anyone experienced flying the Monowheel without the dampers ?
Well I certainly haven't Guerner but if I may just add a little to Bud's
comment . . . . .
The original Europa had no rubber suspension relying on the balloon tyre to
dampen the bumps.
Europa found this was not good enough so introduced the rubber block but
found it to have too much rebound.
They then inroduced the hydraulic dampers to arrest the rebound and were
finally satisfied they had it right.
This is my recollection of the progression so if you dispense with the
dampers, you will be reverse engineering so to speak what has been done
before.
Cheers
Kingsley in Oz.
Message 2
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| Subject: | Re: Monowheel landing gear dampers |
Kingsley=0Ayour recollection is pretty well correct but there was an additi
onal =0Acomplication, the XS tailwheel was introduced shortly afterwards, (
I'm pretty =0Asure.) With the original Mustang/P51 tailwheel bounces were m
uch more of a =0Aproblem. You might get away without dampers on the XS, the
y tend to wear out =0Aquite soon anyway.=0Abtw Guerner is Remi's surname
=0AGraham=0A=0A=0A________________________________=0AFrom: Kingsley Hurst <
hurstkr@redzone.com.au>=0ATo: europa-list@matronics.com=0ASent: Wednesday,
28 July, 2010 10:42:01=0ASubject: Re: Europa-List: Monowheel landing gear d
edzone.com.au>=0A=0A> Has anyone experienced flying the Monowheel without t
he dampers ?=0A=0AWell I certainly haven't Guerner but if I may just add a
little to Bud's comment =0A. . . . .=0A=0AThe original Europa had no rubber
suspension relying on the balloon tyre to =0Adampen the bumps.=0AEuropa fo
und this was not good enough so introduced the rubber block but found =0Ait
to have too much rebound.=0AThey then inroduced the hydraulic dampers to a
rrest the rebound and were finally =0Asatisfied they had it right.=0A=0AThi
s is my recollection of the progression so if you dispense with the dampers
, =0Ayou will be reverse engineering so to speak what has been done before.
=========================0A
==
Message 3
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This may not be the place to ask, but experience here might be
better than elsewhere. My question (following the MG specs sheet regarding
neg G) is:
I believe the Rotax restriction on the 900 series engines is NO Neg
G, yet several have remarked on "jinking" the undercarriage to lock
recalcitrant outriggers and similar moves. What is the proper limit? - is an
instantaneous neg G manoeuvre a No-no or is there perhaps some leeway ( No
inverted flight, etc.)?
What thinkest thou sirrah?
Cheers Ferg
Message 4
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| Subject: | Voltage reading of 25V |
This one is for you electric specialists:
All I did was to move the battery back to the firewall from the rear fusela
ge. I fire up the engine for a highspeed taxi test for my MG configuration
and I get a voltage reading of 25.
I swapped regulators - I always carry a spare - but no change. I also get
the same reading with the alternator switched off. What could I possibly ha
ve screwed up ?
To make things even more perplexing=2C the oil pressure indication does not
drop below 93=2C as the engine is warming up=2C but maybe the two are some
how related. All readings are from the EIS. Never had a problem like this b
efore.
Any help appreciated.
Thanks=2C Karl
Message 5
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| Subject: | Re: Monowheel landing gear dampers |
Yes Graham, the XS tailwheel DID come a little while afterwards. I
hadn't considered that at all and I suspect you are quite right. Only
one way to find out I guess.
> btw Guerner is Remi's surname
Thank you for pointing that out . . . . how embarrassing . . . . I have
seen Remi's name enough times now to know . . . . . I'm not all that far
behind you in age so I'm sure at least YOU will understand.
BTW, if you come over this time next year, you can sleep in OUR new
house.
Cheers and regards to Joan please.
Kingsley
Do not archive
From: GRAHAM SINGLETON
To: europa-list@matronics.com
Sent: Wednesday, July 28, 2010 10:38 PM
Subject: Re: Europa-List: Monowheel landing gear dampers
Kingsley
your recollection is pretty well correct but there was an additional
complication, the XS tailwheel was introduced shortly afterwards, (I'm
pretty sure.) With the original Mustang/P51 tailwheel bounces were much
more of a problem. You might get away without dampers on the XS, they
tend to wear out quite soon anyway.
btw Guerner is Remi's surname
Graham
Message 6
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| Subject: | Re: Monowheel landing gear dampers |
> btw Guerner is Remi's surname
Sorry Remi.
Kingsley
Do not archive.
Message 7
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| Subject: | Re: Voltage reading of 25V |
sounds like a bad ground!
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=306619#306619
Message 8
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| Subject: | Re: Voltage reading of 25V |
Karl,
Not knowing your bus wiring,
Do you have a spare / backup battery, and if so did it accidentally get
wired in series?
Double the voltage and a higher than normal voltage to the sender tends
to drive the pressure up and temps down (I think, I may have to do some
research as I may have that backwards.)
I know, dumb question, but I thought I'd ask.
Bud
----- Original Message -----
From: Karl Heindl<mailto:kheindl@msn.com>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Wednesday, July 28, 2010 3:23 PM
Subject: Europa-List: Voltage reading of 25V
This one is for you electric specialists:
All I did was to move the battery back to the firewall from the rear
fuselage. I fire up the engine for a highspeed taxi test for my MG
configuration and I get a voltage reading of 25.
I swapped regulators - I always carry a spare - but no change. I also
get the same reading with the alternator switched off. What could I
possibly have screwed up ?
To make things even more perplexing, the oil pressure indication does
not drop below 93, as the engine is warming up, but maybe the two are
somehow related. All readings are from the EIS. Never had a problem like
this before.
Any help appreciated.
Thanks, Karl
http://www.matronics.com/Navigator?Europa-List<http://www.matronics.com/N
avigator?Europa-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Message 9
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| Subject: | Voltage reading of 25V |
Hi Bud=2C
Good try. There are other small batteries=2C but they are totally isolated
=2C some 9 volts for variometer and stall warners=2C and a small 12V for an
exterior alarm (to scare animals off the runway or warn pedestrians when t
axiing etc.).
I merely reconnected the battery leads to the two posts which I have on top
of the starboard footwell. I must have caused a short or ground somehow
=2C but I just don't see it.
The engine starts and is running fine=2C but I only let it run for a minute
or so.
Karl
From: budyerly@msn.com
Subject: Re: Europa-List: Voltage reading of 25V
Karl=2C
Not knowing your bus wiring=2C
Do you have a spare / backup battery=2C and if so did it accidentally get w
ired in series?
Double the voltage and a higher than normal voltage to the sender tends to
drive the pressure up and temps down (I think=2C I may have to do some rese
arch as I may have that backwards.)
I know=2C dumb question=2C but I thought I'd ask.
Bud
----- Original Message -----
From: Karl Heindl
Sent: Wednesday=2C July 28=2C 2010 3:23 PM
Subject: Europa-List: Voltage reading of 25V
This one is for you electric specialists:
All I did was to move the battery back to the firewall from the rear fusela
ge. I fire up the engine for a highspeed taxi test for my MG configuration
and I get a voltage reading of 25.
I swapped regulators - I always carry a spare - but no change. I also get
the same reading with the alternator switched off. What could I possibly ha
ve screwed up ?
To make things even more perplexing=2C the oil pressure indication does not
drop below 93=2C as the engine is warming up=2C but maybe the two are some
how related. All readings are from the EIS. Never had a problem like this b
efore.
Any help appreciated.
Thanks=2C Karl
href="http://www.matronics.com/Navigator?Europa-List">http://www.matronhr
ef="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 10
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| Subject: | Voltage reading of 25V |
Hmm..Not sure,
My first thought was along the line of what Ira had said..bad ground
somewhere.
Try making some measurements between the power and ground rails with a
handheld meter to confirm what the EIS was reading. Take the measurements
with the key on and the engine off, to eliminate all chance of actually
producing deadly avionics voltages from a spinning alternator. What is the
EIS reading in this configuration(engine off)? Could there be something that
was connected to the rear-ward wiring that became disconnected when moving
the battery up front? Is the ground strap to the engine block still
connected?
Greg
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Karl Heindl
Sent: Wednesday, July 28, 2010 12:23 PM
Subject: Europa-List: Voltage reading of 25V
This one is for you electric specialists:
All I did was to move the battery back to the firewall from the rear
fuselage. I fire up the engine for a highspeed taxi test for my MG
configuration and I get a voltage reading of 25.
I swapped regulators - I always carry a spare - but no change. I also get
the same reading with the alternator switched off. What could I possibly
have screwed up ?
To make things even more perplexing, the oil pressure indication does not
drop below 93, as the engine is warming up, but maybe the two are somehow
related. All readings are from the EIS. Never had a problem like this
before.
Any help appreciated.
Thanks, Karl
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