Hi, Many thanks for your helpful reply. As you will see, various other
replies have encouraged me to think it is the regulator and as I am pressed
for time before setting off to the Continent again on Saturday I am going
forthe simple expedient of replacing it. If I can find someone to test the
offending item I will let you know the outcome, or indeed I would happily
post it to you!
Regards, David
----- Original Message -----
From: "D Wysong" <hdwysong@gmail.com>
>
> Hello David -
>
> I posted your issue on the Aeroelectric list to see what they'd say
> about it. The Rotax 914 regulator/rectifier has been discussed over
> there before, although I have yet to see much in the way of failure
> modes. The only recommendations I've seen are "keep it cool" and
> "don't load it over 12 Amps." Anyhow, here are Bob Nuckolls'
> comments:
>
> "The charging system could become intermittent either because
> of some condition inside the regulator/rectifier -OR- wiring
> external to the regulator that carries output power or control
> signals to the regulator.
>
> Sounds like it's consistent enough to instrument and go catch
> the problem during a test flight. I'd look at AC voltage into
> the regulator, DC voltage out of the regulator, control voltage(s)
> to the regulator and bus voltage in addition to what appears
> to be the battery ammeter.
>
> Observations taken on these readings during a 'brown out' will
> be important clues as to how one would proceed.
>
> Bob . . ."
>
> As a potential 914 user and someone that has been looking for a
> suitable replacement for the Ducati regulator/rectifier I'd certainly
> be interested in your findings.
>
> Happy hunting!
>
> D Wysong
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