Subject: Subscribe
From: Rotary Engine
Date: 2/18/2008, 12:13 PM
To: AARotary Engine


I would like to subscribe to your newsletter.

I have a rotary engine I had on a test stand for quite a while. It is a
12A geared and turboed with a Marvel carb.
If you are interested I could send some details and pics.

I also have a few antenna articles I have written if anyone is
interested. I could also send a bio if anyone thinks I am not qualified
to talk about antennas.

Regards

Bob

bobsantennas@earthlink.net <mailto:bobsantennas@earthlink.net>

Thanks for subscribing Bob we just had a huge discussion on antennas.
Your excellent reputation proceeds you.

Here is the gist of it.

Somebody might be interested in buying your 12A turbo. Rotary stuff for sale
ads on here are free. Send pictures. What kind of gear box?

Paul Lamar


_--------------------------------------------------------------------------

           Mark what kind of antennas are you using? If tape was the coax
           connected in the center. I assume they and the coax are
   bonded in
           so there is little you can do about changing anything having
   to do
           with that.

           The other thing I am curious about is the new box that converts
           the fuel sensor value to a variable frequency pulse. Please look
       inside
           and tell me the numbers on the chips if they are readable of
   course.
           Some manufacturers mask the numbers sometimes so it makes it
           more difficult to copy the circuit.

           The diodes Aubrey mentions may be embedded in the chip or
   chips what
           ever the case may be. In that case the only thing I think
   you can
           do is put them in a shielded box and move it away from the coax.

           --
           Paul Lamar ...No rotor no motor.
----------------------------------------------------------------------------

       Paul (and others),
       I made a breakthrough this  weekend on the fuel probe problem.  I
       rewired the right probe with shielded wire from the probe all
   the way to
       the EFIS.  Power up the EFIS and Nav/Com, hit PTT, and the gauge is
       steady as a rock.  The left gauge (the one that I haven't
   changed) still
       acted up as always, but it will be next to fix.  But the right
   one with
       shielded wire appears to be working great.  It was too late in
   the day
       to fly it, but I feel 99% certain that this has corrected the
   problem.

       Thanks to everyone that shared their ideas and suggestions on
   how to fix
       this very annoying (and potentially dangerous) problem.

       Mark S.
       25.5 hrs
-------------------------------------------------------------------------------------
       Congratulations Mark. You had a real bear of a problem there for
   awhile.
       These kinds of problems usually require real expensive instruments
       to trouble shoot like field strength meters and VSWR meters.

       Probably a good plan of attack is shield everything in an airplane
       including all the engine computer wiring.
       --
       Paul Lamar ...No rotor no motor.

--------------------------------------------------------------------------------------------
   Shielding power and (especially) ground will rarely provide value in
   most systems - especially those that burn any significant amount of
   power - RF noise like this is low energy only affecting low power
   devices like sensors..  There would be _no_ value in shielding any dc
   lighting circuit wiring (nav/landing, cabin, panel lights), and likely
   no value in shielding the power leads to radios or other avionics.

   Shielding low voltage signaling wires (sensors) where appropriate can be
   a good deal.

   Thanks to Mark for letting us know what the resolution was.


   Regards,

   Matt-

   That assumes people know what is what :) Electricity is a mystery to
   most:)

   Paul Lamar

-----------------------------------------------------------------------------

Paul,
I'm using a Bob Archer antenna.  It is bonded onto one inner skin of the
vertical tail.  I have a picture somewhere, but it may take a while to
find it.  I had a friend check it with a VSWR meter prior to assembling
the tail and it tested very good, but don't remember the numbers.

Mark
25.5 hrs

Thanks Mark.

-------------------------------------------------------------------------------

          Paul (and others),
           I made a breakthrough this  weekend on the fuel probe
   problem.  I
           rewired the right probe with shielded wire from the probe all
       the way to
           the EFIS.  Power up the EFIS and Nav/Com, hit PTT, and the
   gauge is
           steady as a rock.  The left gauge (the one that I haven't
       changed) still
           acted up as always, but it will be next to fix.  But the right
       one with
           shielded wire appears to be working great.  It was too late in
       the day
           to fly it, but I feel 99% certain that this has corrected the
       problem.

           Thanks to everyone that shared their ideas and suggestions on
       how to fix
           this very annoying (and potentially dangerous) problem.

           Mark S.
           25.5 hrs
--------------------------------------------------------------------------------
           Congratulations Mark. You had a real bear of a problem there for
       awhile.
           These kinds of problems usually require real expensive
   instruments
           to trouble shoot like field strength meters and VSWR meters.

           Probably a good plan of attack is shield everything in an
   airplane
           including all the engine computer wiring.
           --
           Paul Lamar ...No rotor no motor.
----------------------------------------------------------------------------

       Shielding power and (especially) ground will rarely provide value in
       most systems - especially those that burn any significant amount of
       power - RF noise like this is low energy only affecting low power
       devices like sensors..  There would be _no_ value in shielding
   any dc
       lighting circuit wiring (nav/landing, cabin, panel lights), and
   likely
       no value in shielding the power leads to radios or other avionics.

       Shielding low voltage signaling wires (sensors) where
   appropriate can be
       a good deal.

       Thanks to Mark for letting us know what the resolution was.


       Regards, Matt

---------------------------------------------------------------------------

   Get Bob Nuckolls' book "The Aeroelectric Connection."

   https://matronics.com/aeroelectric/Catalog/pub/pub.html

   If you _no_ electronics experience the book might seem pretty dense (but
   comprehensible).

   If you have any electronics experience, this book will fill in the
   relevant details when it comes to aircraft wiring.

   If you have any questions post them to the aeroelectric list (or here) -
   even if you don't have the book, and likely a good discussion will come
   about.

   Bob Nuckolls rubs some people the wrong way - because he is forever
   committed to understanding things via the simple ideas of physics.  He
   won't let people get away with irrational BS when it comes to design
   philosophy.  He also won't get into cookbook instructions (though he
   does provide some very useful wiring diagrams to start with), but
   instead thinks that everyone (that might be building an airplane) has
   the capability to understand the fundamentals well enough to make their
   own design and construction decisions.

   I find his approach and methods to be refreshing and the _right_ way to
   do things.



   Regards,

   Matt-



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