Today's Message Index:
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1. 05:55 AM - Re: Re: Servo problem (Robert L. Nuckolls, III)
2. 08:22 AM - Re: Servo problem (jonlaury)
Message 1
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| Subject: | Re: Servo problem |
>
>http://www.lineagepower.com/oem/pdf/FLT012A0Z.pdf
>
>If you think this is the right track, does it go on the antagonist
>wiring or the EB wiring?
I looked up the product and found the wiring
diagrams. THAT filter is like killing fleas
with a 12 gauge . . .
How many of these devices are installed on your
airplane? How hard is it to remove them for
service/modification? If filtering the two
power lines is a solution to be explored, then
the filter components are quite small and
can be assembled right to the back of the
device were the wires emerge.
I'm disappointed but not surprised that the
folks who designed/built/marketed these
into aircraft did not fully appreciate
the potential for strong RF fields. Mobile
transmitters in vehicles of all kinds are
very strong locally . . . and they travel
around with the vehicle. You don't just
pass one occasionally.
In my earliest days of gainful employment
I worked for several two-way radio companies.
It was not uncommon to do installations of
transmitters having power outputs of 60
watts. Back then, the vehicle's other
systems were out of the copper-steel-
Bakelite (CSB) era. Exceedingly robust with
respect to RFI. In the silicon-software-
glass (SSG) era, virtually every active
component of a vehicles systems and accessories
is a potential victim for upset by local
radio energy fields.
Talk to the engineers that suggested the
boss-hog filters and see if they'll send
me a couple of these lights to play with.
If they would send a schematic of their
internals, it would be helpful too.
I'll craft a "scab-on" filter which they
can recommend for folks such as yourself
and consider for inclusion INSIDE future
production. You can encourage them to
contact me directly.
Barring their direct interest and response,
we can put the filters on your lights.
I suspect you could simply cut the lead wires
at the back of the dismounted units.
Leave me 1" pigtails. I'll send them
back with some sort of connector so
that you can re-install them in your
airplane.
Bob . . .
Message 2
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| Subject: | Re: Servo problem |
Bob,
I sent the following out this morning. Please let me know if they bite.
And thank you once AGAIN (and again, and again...!) for your generous offer to
craft a solution to the RF problem with the EyeBeam. Hearing from you that this
can be solved with an add-on filter, gives me confidence to go ahead and finally
install the structural belly panel (with its 60+ screws, and covering the
EB wiring) and move on to firing this thing up!
Cheers,
John
I regularly read, monitor and contribute to the Aerolectric List, which is monitored
by Bob Nuckolls, a long time consulting electrical engineer for Piper, Beech,
Cessna, Lear, Hawker, etc.
He is immensely generous and helpful to the experimental aircraft community in
designing electrical architectures for the large variety of experimental aircraft
and missions and enjoys solving challenging problems.
I submitted my RF problem with the EB and here is his response. I hope you will
take him up on his offer. The discussion started out because someone had an RF
problem with a servo, hence, "Post subject: Servo problem" I responded by asking
if the solution he crafted for the servo might be appropriate for the RF
problem with my EB.
Contact him directly here: http://www.aeroelectric.com/bob.nuckolls/
(Bob's response)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367234#367234
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