Today's Message Index:
----------------------
1. 06:24 AM - Re: Re: Bells and Whistles (Robert L. Nuckolls, III)
2. 09:08 AM - Re: Magneto tacho signal (Robert L. Nuckolls, III)
3. 02:02 PM - 2-10 swtich spacing (rvg8tor)
4. 02:42 PM - Re: 2-10 swtich spacing (Franz Fux)
5. 06:43 PM - Re: 2-10 swtich spacing (B Tomm)
6. 07:35 PM - Re: 2-10 swtich spacing (Vaughn Teegarden)
7. 09:51 PM - Re: King KMD150 battery (n801bh@netzero.com)
Message 1
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Subject: | Re: Bells and Whistles |
At 09:14 PM 10/17/2009, you wrote:
>Bob,
>I understand and concur with your concern.
>For example, I prefer manual flaps over electro-whizzy ones, but I
>can't argue that there are many applications where powered flaps
>(electric or hydraulic) are desirable. There are failure modes
>associated with powered flaps that may cause potentially unsafe
>situations. However, those failure modes are considered an
>acceptable risk when weighed against the convenience.
>I have to then challenge you and suggest that having (as an example)
>airspeed sensors that can disable powered flap activation when IAS
>is excessive may be a convenience worth having despite it's
>potential failure modes. That is not to say that said sensor need
>not be robust - I would assume that robustness would be expected. I
>believe the application of such a sensor to a perceived need could
>be worthwhile.
>The Vertical Power concept takes this discussion to a new
>level. While I prefer having manual activation of most of my
>switches and controls, the Vertical Power ideas are certainly viable.
All the above is non-quantifiable and subject to
comparison with business models as a "viable"
product and failure modes as a "low risk" product.
I don't think I offered anything as a recommendation
to be challenged. I was only suggesting that when
it comes to automated systems there is an increased
risk of pilot inattention and dependence on that
automation. There is also a common-sense observation
that hooking motors to flight surfaces has a long
history of lessons-learned that the majority of
OBAM aviation enthusiasts are unaware of.
>Experimental aviation is where many (if not most) advances in
>aviation occur. I say lets continue to advance aviation by
>expanding ideas and concepts - including new electro-whizzys. We
>don't have to stay with wing-warping just because it resulted from a
>prudent development program. Although ... maybe we need to consider
>it once again in today's environment. Hmmm ... any experimental
>aviation nuts out there willing to rework the wing warp idea?
Not sure what this has to do with the conversation.
Indeed, the first time anything new is tried, the
investigator is an "amateur" at a particular
task. Experimental flight test USED to be the place
where new things were tried and developed before
loading those ideas to the production line. Reliability
is inversely proportional to parts count. Cost of
ownership goes up with parts count as does weight,
volume and sometimes - panel space. Flying an airplane
is not a complex or difficult task . . . "convenience"
just doesn't add performance or reduce cost.
Uncle Bert's design goals for Voyager was ALL performance
driven, convenience had little if any part in the task.
I've worked on biz jets where it was possible for a
flight to be totally button-pushed and knob-twisted
from wheels-up to touch-down. Now THAT's convenience
. . . but the airplane didn't get there any faster nor
did it carry more payload.
Airplane owners come in all flavors but I would hope
they are ALL cautious and strive for competence at
the implementation of their personal design goals.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 2
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Subject: | Re: Magneto tacho signal |
>
>If the only reason to have 2 ignitions was for backup - maybe. The
>problem is that these engines with big ass pistons really need 2
>functional ignitions to get the flame spread over with before the
>moment has passed to make useful power.
Understand. But having both ignition systems operating
all the time is not a safety issue . . . only
a performance issue.
<snip>
Not an emergency, also not at all comfortable. A more thorough
check can be done at altitude, leaned. This shows up problems you
might not notice on the ground check. Unfortunately, I didn't do this
before landing on the prior flight.
Again, a performance issue that does not put
the flight at serious risk for an off-airport
return to earth.
To be sure, there is a host of simple-ideas affecting
performance and reliability that builders are encouraged
to consider in crafting his/her design goals.
System reliability conversation targets risk reduction.
Many cause/effect features in an FMEA will speak
to reductions in performance or increases in pilot
workload. The goal is to maximize probability
of putting the rubber back on the ground with the
aluminum smooth and folks aboard smiling.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 3
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Subject: | 2-10 swtich spacing |
I asked this of B&C who sells the switches but they directed me to ask Bob Nuckolls
on this forum so I am putting it out for anyone with the information. I
am not sure why B&C would not know technical information for items they sell!
I had drilled holes 3/4" on center for my switches. The bigger 2-10 switches fit,
but with very little room between them.
Is there a minimum space between switches required?
Thanks for the help.
--------
Mike "Nemo" Elliott
RV-8A QB (Fuselage)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268599#268599
Message 4
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Subject: | Re: 2-10 swtich spacing |
When I had my panel cut out by e-panel builders a while ago they used
1' 1/8 center
Franz
On 19/10/09 1:58 PM, "rvg8tor" <rvg8tor@comcast.net> wrote:
>
> I asked this of B&C who sells the switches but they directed me to ask Bob
> Nuckolls on this forum so I am putting it out for anyone with the information.
> I am not sure why B&C would not know technical information for items they
> sell!
>
> I had drilled holes 3/4" on center for my switches. The bigger 2-10 switches
> fit, but with very little room between them.
>
> Is there a minimum space between switches required?
>
> Thanks for the help.
>
> --------
> Mike "Nemo" Elliott
> RV-8A QB (Fuselage)
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268599#268599
>
>
>
>
>
>
>
>
>
>
Franz Fux
Director of Operations
Last Frontier Heliskiing Ltd.
Bell 2 Lodge
P.O. Box 1237
Vernon, BC, V1T 6N6
CANADA
Office Contact
T: (250) 558-7980
F: (250) 558-7981
http://www.lastfrontierheli.com
Lodge Contact
T: (250) 275-4770
F: (250) 275-4912
http://www.bell2lodge.com
Message 5
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Subject: | 2-10 swtich spacing |
I seem to recall Bob M suggested 0.9 inch spacing.
Bevan
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of rvg8tor
Sent: Monday, October 19, 2009 1:58 PM
Subject: AeroElectric-List: 2-10 swtich spacing
I asked this of B&C who sells the switches but they directed me to ask Bob
Nuckolls on this forum so I am putting it out for anyone with the
information. I am not sure why B&C would not know technical information for
items they sell!
I had drilled holes 3/4" on center for my switches. The bigger 2-10
switches fit, but with very little room between them.
Is there a minimum space between switches required?
Thanks for the help.
--------
Mike "Nemo" Elliott
RV-8A QB (Fuselage)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268599#268599
Message 6
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Subject: | Re: 2-10 swtich spacing |
In Bob Nukolls original Aeroelectic drawings I am sure he showed 0.8 inch
spacing, but in his newer version he has 0.9 inch spacing. I believe you
will have to wait for an answer from the man himself. His experience is
vast, while most of us have little to none.
Europa XS191
----- Original Message -----
From: "rvg8tor" <rvg8tor@comcast.net>
Sent: Monday, October 19, 2009 16:58
Subject: AeroElectric-List: 2-10 swtich spacing
>
> I asked this of B&C who sells the switches but they directed me to ask Bob
> Nuckolls on this forum so I am putting it out for anyone with the
> information. I am not sure why B&C would not know technical information
> for items they sell!
>
> I had drilled holes 3/4" on center for my switches. The bigger 2-10
> switches fit, but with very little room between them.
>
> Is there a minimum space between switches required?
>
> Thanks for the help.
>
> --------
> Mike "Nemo" Elliott
> RV-8A QB (Fuselage)
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=268599#268599
>
>
>
Message 7
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Subject: | Re: King KMD150 battery |
Hi guys.. My King KMD150 in my experimental has started to display the
dreaded "internal battery needs replacing".. I googled the details and
it looks like a kinda involved process to pull the unit apart, carefull
y separate some PC boards and solder in a new one. Battery + and Battery
giant has them for 5 bucks so the parts cost is minimal. Anyone know a
tech who does the R&R for a reasonable price ? If not it looks like I w
ill break out the soldering stuff and give it a try.
Thanks in advance
Ben Haas
N801BH
www.haaspowerair.com
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