Alan,
I would tend to agree with Richard that the likelihood is that your problem
is not in the generator but in the wiring or Regulator .
12.8V at cruise is better, and will probably keep the bird in the air, but
it is not quite adequate. If you could let us know your overall current
usage, that would help decide if the generator/regulator is close to its
power output limit.
Richard-or anrman, you tried 4 new Regulators, WOW! Why did they not work
for you, and was it related to the 5 Cycle/second current pulses? (I will
need to get a new one at some point). Interesting point about the analog
gauge..
Regards,
Greg
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard Holder
Sent: Friday, July 24, 2015 3:01 PM
Subject: Re: Europa-List: Re: Charging System
--> <richard.holder@outlook.com>
On 24/07/2015 22:18, Alan Carter wrote:
> <alancarteresq@onetel.net>
> Hi Greg. This is becoming a big problem, I can see the panel voltmeter
> move slightly as I increase power, but you are right its not
> maintaining my battery. With the volt meter across the battery at
> cruise power its only 12.8v. Now we come to fixing it, sodding built
> in intricate mag/alternator on the back of the engine, I was expecting
> a bolt on Alternator replacement unit, insert the shaft and tighten up
> the 4 bolts , JOB DONE, same as the a tyre change on bloody main
> wheels, have to unlock and unbolt the disc to change a tyre, Took me
> longer to do the wire locking than it did to fit the new tyre. WHY ??
>
> Anybody repaired the Alternator on the 914.
i am going to offer my 10 cents worth
These problems are why you need to have an ammeter AND a voltmeter to give
sufficient information. Ammeters can either show current in and out of the
battery (with a -30 0 +30 type scale), or measure the current out of the
alternator (0 +30 scale). In and out of the battery is more useful.
And i go further and say that digital meters only sample maybe 5 times a
second. You need analogue meters with pointers. Without my analogue ammeter
I would not have known that my charging system was fluctuating from 2 to 10
amps on a 5 cycles per second basis.
I tried 4 new rectifier/regulators and they were all the same. Apparently
they had changed the design ! I put a Schicke regulator on and all was well.
I did try a used but older R/R and it was fine as had been my original.
Electrics are really simple but you have to go back to first principles and
understand what is actually happening.
The stator on the flywheel is very reliable. The wiring and R/R are not. I
would do comprehensive checks on the wiring and the R/R (and maybe the rest
of your electrics) befor eeven considering fiddling with the stator.
Is the body of your R/R earthed ?
Richard Holder
aka anrman :-)
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