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elmar.hegenauer(at)telus.
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 Posted: Fri Feb 15, 2008 8:41 pm Post subject: What happend to Brian Lloyd's OV project? |
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What happend to Brian Lloyd's
Overvoltage Protection project
for the CJ?
IMHO, overvoltage is still a serious
issue on those planes, especially
with all the latest and expensive
avionics installed.
cheers
Elmar (C-FTKL)
[quote][b]
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brian-1927(at)lloyd.com
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| Posted: Sat Feb 16, 2008 8:59 am Post subject: What happend to Brian Lloyd's OV project? |
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On Feb 15, 2008, at 8:37 PM, Elmar Hegenauer wrote:
| Quote: | What happend to Brian Lloyd's
Overvoltage Protection project
for the CJ?
|
It is done. The module is available from Bob Nuckolls of the
AeroElectric Connection. Tom Elliot has the prototoype installed in
his CJ. Contact Bob at http://www.aeroelectric.com
The one thing I didn't do is sit down and do a set of detailed
instructions for installing it. I didn't have a CJ to work on and,
frankly, it became something I just didn't want to spend any more time
on as any CJ or Yak I own will lose its generator to be replaced by an
alternator whose field circuit will be automatically disabled during
an OV event.
| Quote: |
IMHO, overvoltage is still a serious
issue on those planes, especially
with all the latest and expensive
avionics installed.
|
Yup.
--
Brian Lloyd 3191 Western Drive
brian HYPHEN 1927 AT lloyd DOT com Cameron Park, CA 95682
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
— Antoine de Saint-Exupéry
PGP key ID: 12095C52A32A1B6C
PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C
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mark.bitterlich(at)navy.m
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| Posted: Mon Feb 18, 2008 12:11 pm Post subject: What happend to Brian Lloyd's OV project? |
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On the YAK's (not sure of the CJ's, but assume it is the same or close)
there is a very good over-voltage protection module that will disconnect
the generator from the main electrical bus by opening the main contactor
in the combination module.
Most aftermarket systems also include over-voltage protection. The only
one that I know of that does not come stock with this protection is the
B&C PMG Alternator, and with that particular one, it is an option..
Simple crowbar circuit.
Brian's project was much more than this, and I am curious as to what the
end result was as well. Just a reassurance that the stock electrical
systems include such a system... Huge as it is.
Mark Bitterlich
--
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brian-1927(at)lloyd.com
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| Posted: Mon Feb 18, 2008 1:05 pm Post subject: What happend to Brian Lloyd's OV project? |
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| Quote: | Brian's project was much more than this, and I am curious as to what
the
end result was as well. Just a reassurance that the stock electrical
systems include such a system... Huge as it is.
|
The CJ6A stock electrical system does not have any OV protection. The
module was completed by Bob Nuckolls and tested by Tom Elliot who has
it installed in his aircraft. Tom can answer how well it works and how
easy/hard it was to install. I didn't have an aircraft to work on at
the time.
FWIW, I strongly recommend Bob Nuckolls' book,
_The_Aeroelectric_Connection_. It talks about the design and
implementation of aircraft electrical systems. Bob has worked for both
Cessna and Beechcraft and knows what he is talking about. The book is
written for the layman just getting started and covers a lot of basic
electricity for people who have no previous experience. He gets into
everything from the simple to the complex. The book is aimed at people
building their own aircraft, everything from the simplest RV to the
most complex glass airplane with glass panel and dual electrical
systems.
Brian Lloyd 3191 Western Drive
brianl AT lloyd DOT com Cameron Park, CA 95682
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
PGP key ID: 12095C52A32A1B6C
PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C
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